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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from sales, maturities and repayments of other investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfFloodPremiumsCeded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of Flood Premiums Ceded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfFloodPremiumsCeded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Flood Premiums Ceded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfFloodPremiumsCeded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Flood premiums ceded (percentage)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, issued shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accounts Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable and accrued expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revision of Prior Period [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due in one year or less</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Long-term Debt Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of Issued and Outstanding Stock Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Issued And Outstanding Stock Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of issued and outstanding stock acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Policy Acquisition Costs, Amortization Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Policy acquisition costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, authorized shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinstatementPremiumAllOtherPerils_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinstatement Premium - All Other Perils</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinstatementPremiumAllOtherPerils_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinstatement Premium - All Other Perils</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinstatementPremiumAllOtherPerils_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinstatement Premium - All Other Perils</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate (percentage)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Aggregate amount of dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Dividends, Common Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalFinancialInformationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Financial Information Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalFinancialInformationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation of Relevant Expense Captions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, at Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Cash Equivalent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllOtherCorporateBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Corporate Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllOtherCorporateBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, issued shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total undiscounted future minimum lease payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total undiscounted future minimum lease payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpensesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Credit Loss Allowance Expenses (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpensesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total credit loss allowance expenses reversal.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpensesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Credit Loss Allowance Expenses (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseholdImprovementDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Leasehold Improvement Disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseholdImprovementDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leasehold Improvement Disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseholdImprovementDisposal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold Improvement Disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Exercise Prices, Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Exercise Prices,Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading, and Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Trading, and Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Weighted Average Exercise Prices,Options Expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Payments to Acquire Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireOtherInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payments to acquire other investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification adjustment for net realized gains, Net-of-Tax Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VehiclesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vehicles [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VehiclesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vehicles</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainOrLossOnSaleOfStockInSubsidiary_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on sale of subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainOrLossOnSaleOfStockInSubsidiary_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Stock in Subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainOrLossOnSaleOfStockInSubsidiary_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on sale of subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Year 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Year 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Credit Loss Allowance Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Credit Loss Allowance Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Credit Loss Allowance Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceExpenses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Total Credit Loss Allowance Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trade Names [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradeNamesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trade Names</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GoodwillAcquiredDisposedOfOrImpairedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill acquired, disposed of or impaired during period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GoodwillAcquiredDisposedOfOrImpairedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Acquired, Disposed Of Or Impaired During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GoodwillAcquiredDisposedOfOrImpairedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Goodwill acquired, disposed of or impaired during period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock compensation, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exercise Price Range [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise Price Range [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Remaining Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average remaining amortization period (in years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit loss allowance changes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred Tax Assets, Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilityEquitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Utility, Equities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilityEquitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Utilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset-Backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset-backed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Numerator</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueMeasurementsNonrecurringFinancialInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements, Nonrecurring, Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueMeasurementsNonrecurringFinancialInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurements, nonrecurring, financial instruments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueMeasurementsNonrecurringFinancialInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial instruments measured on non-recurring basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Accounting Policies [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DebtInstsrumentLeverageRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instsrument Leverage Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DebtInstsrumentLeverageRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instsrument leverage ratio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DebtInstsrumentLeverageRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, leverage ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of stock options granted during period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Stock Options Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionExcessRetentionAmountReinsuredPerEvent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance, Excess Retention, Amount Reinsured, Per Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionExcessRetentionAmountReinsuredPerEvent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance, excess retention, amount reinsured, per event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments Classified by Contractual Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings available to ACIC common stockholders per share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of Stock Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Stock Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Available-for-sale Securities Reconciliation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheAggregateExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Catastrophe Aggregate Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheAggregateExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Catastrophe Aggregate Excess of Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheAggregateExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Catastrophe Aggregate Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_BBTTermNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BB&amp;T Term Note Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_BBTTermNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BB&amp;T Term Note Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_BBTTermNotePayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BB&amp;T Term Note Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">[Line Items] for Number of Wholly-Owned Subsidiaries [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Wholly-Owned Subsidiaries [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Wholly-Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of equity securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from sales, maturities and repayments of equity securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net loss to net cash provided by operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidReinsurancePremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Prepaid Reinsurance Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidReinsurancePremiums_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Ceded unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TaxBenefitRelatedToSaleAndRealizedLossOnFixedMaturityPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Benefit Related To Sale And Realized Loss On Fixed Maturity Portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TaxBenefitRelatedToSaleAndRealizedLossOnFixedMaturityPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax benefit related to sale and realized loss on fixed maturity portfolio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TaxBenefitRelatedToSaleAndRealizedLossOnFixedMaturityPortfolio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax benefit related to sale and realized loss on fixed maturity portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfSingeOccurrenceExceedingProtectionPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of singe occurrence exceeding protection purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfSingeOccurrenceExceedingProtectionPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Singe Occurrence Exceeding Protection Purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfSingeOccurrenceExceedingProtectionPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of singe occurrence exceeding protection purchased.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageNumberOfSharesOutstandingBasicAndDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Number of Shares Outstanding, Basic and Diluted [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageNumberOfSharesOutstandingBasicAndDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic and Diluted [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageNumberOfSharesOutstandingBasicAndDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales and maturities of fixed maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from sales, maturities and repayments of fixed maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Paymentsoutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Paymentsoutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Paymentsoutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Paymentsoutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Payments outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscFeesandCommissionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AmRisc Fees and Commission [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscFeesandCommissionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AmRisc Fees and Commission [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscFeesandCommissionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AmRisc Fees and Commission</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExternalCreditRatingByGroupingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">External Credit Rating by Grouping [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retained earnings (deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Payments to Acquire Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments to Acquire Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payments to acquire equity securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesAndCertainTradingAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TradingSecuritiesAndCertainTradingAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Securities Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoverageProbabilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Program Provides Sufficient Coverage Probability Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoverageProbabilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Program provides sufficient coverage probability rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoverageProbabilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Program provides sufficient coverage probability rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance, Reinsured Risk, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cession Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Aggregate Intrinsic Value,Options Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForCreditLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Credit Loss [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cost, Depreciation and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost, Depreciation and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cost, Depreciation and Amortization, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-Based Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedAmortizationDeferredFinanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Amortization, Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedAmortizationDeferredFinanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discontinued Operations - Assets &amp; Liabilities UPC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations - Assets &amp; Liabilities UPC [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued Operations - Assets &amp; Liabilities UPC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted, Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effect of dilutive securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in net unrealized gains (losses) on investments, Pre-Tax Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Other Operating Cost and Expense, by Component [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherOperatingCostAndExpenseByComponentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Other Operating Cost and Expense, by Component</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIABILITIES AND STOCKHOLDERS' EQUITY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Policyholder Benefits and Claims Incurred, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PolicyholderBenefitsAndClaimsIncurredNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Prices,Options Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Granted (Weighted-Average Exercise)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less: accumulated depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Available-for-sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Effective Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Interest Rate, Effective Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuredLongTermDebtProjectDemandDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insured Long Term Debt Project Demand Decrease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuredLongTermDebtProjectDemandDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insured long term debt project demand decrease.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuredLongTermDebtProjectDemandDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insured long term debt project demand decrease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings available to ACIC common stockholders per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingency Accrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss Contingency Accrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverableCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverableCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Wholly-Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Wholly-Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of wholly owned subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental Cash Flows Information</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill and Intangible Assets Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill and Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">UPC Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UPC Insurance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">UPC Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Payments to Acquire Fixed Maturities, Available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments to Acquire Fixed Maturities, Available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payments to acquire fixed maturities, available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Including Discontinued Operation, Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInvestmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Investment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInvestmentExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Investment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Debt and Equity Securities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments, Debt and Equity Securities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase in cash, cash equivalents and restricted cash, including cash classified as assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOperatingActivitiesSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Activities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOperatingActivitiesSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Activities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Investment Income Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accrued investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfShareAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of share acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfShareAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of share acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Outstanding contractual term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Remaining Contractual Term (years), Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed maturities, cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cost or adjusted/amortized cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Book Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed maturities, available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Number of Stock Options Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofAdditionalStatesinwhichEntityisLicensed_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Additional States in which Entity is Licensed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofAdditionalStatesinwhichEntityisLicensed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Additional States in which Entity is Licensed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofAdditionalStatesinwhichEntityisLicensed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Licensed States</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Fair Value of Financial Instruments Measured on a Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Restricted Stock Award, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableforsaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValuePercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, Without Single Maturity Date, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableforsaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValuePercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, Without Single Maturity Date, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableforsaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValuePercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset and mortgage backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Long-term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Error Correction, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Error Correction, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Weightedaverageremainingexpenseperiod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average remaining expense period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Weightedaverageremainingexpenseperiod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted average remaining expense period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Weightedaverageremainingexpenseperiod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining expense period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QualifiedWagesPerEmployee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Qualified wages per employee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QualifiedWagesPerEmployee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Qualified Wages Per Employee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QualifiedWagesPerEmployee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Qualified wages per employee.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededPremiumsEarned_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ceded Premiums Earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededPremiumsEarned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ceded Premiums Earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededPremiumsEarned_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Ceded premiums earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Relationships [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerRelationshipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Relationships</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsurancePremiumReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premium Collected</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsurancePremiumReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Premium Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsurancePremiumReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance premium received.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Number of Restricted Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Number of Restricted Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Program Provide Sufficient Coverage Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Program provides sufficient coverage period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Program provides sufficient coverage period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Costs, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, outstanding shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberOfReportableSegment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Reportable Segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberOfReportableSegment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of reportable segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberOfReportableSegment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of reportable segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other general and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Professional services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Trading, and Equity Securities, FV-NI [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Trading, and Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Liability for Unpaid Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">OTHER COMPREHENSIVE INCOME:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance Recoverable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Deferred Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Deferred income taxes, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred income taxes, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations, Per Basic Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Continuing operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Divestiture of Interest in Consolidated Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net proceeds from sale of former subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Number of Stock Options Expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Intrinsic Value,Options Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense, after Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Post-Tax Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Exercise Price Range [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement, Option, Exercise Price Range [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership unfunded commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, $0.0001 par value; 1,000,000 shares authorized; none issued or outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Groups, Including Discontinued Operations [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Groups, Assets &amp; Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset and mortgage backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Minimum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Grant Date Fair Value Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Loss [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLongTermInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Long-Term Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLongTermInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLongTermInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReinsuranceRecoverable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Reinsurance Recoverable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReinsuranceRecoverable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Reinsurance recoverable on paid and unpaid losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRisccededpremiumswrittenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AmRisc ceded premiums written [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRisccededpremiumswrittenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AmRisc ceded premiums written [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRisccededpremiumswrittenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AmRisc ceded premiums written</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Intangible asset amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of intangible assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidReinsurancePremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid Reinsurance Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidReinsurancePremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ceded uneared premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidReinsurancePremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ceded unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Wholly-Owned Subsidiaries [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Wholly-Owned Subsidiaries [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofWhollyOwnedSubsidiariesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Wholly-Owned Subsidiaries [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss) on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Unrealized Gain (Loss) on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized gains on equity securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net unrealized losses (gains) on equity securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCIfAnnouncedUpgradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kroll Bond Rating Agency, LLC If Announced Upgrade Of Rating [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCIfAnnouncedUpgradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kroll Bond Rating Agency, LLC if announced upgrade of rating.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCIfAnnouncedUpgradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kroll Bond Rating Agency, LLC if Announced Upgrade of Rating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Unrealized Loss on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sublease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubleaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sublease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Including Discontinued Operation, Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIABILITIES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies (Note 12)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForLossesAndLossAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForLossesAndLossAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding (fair value)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Weighted Average Grant Date Fair Value Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Weighted Average Grant Date Fair Value Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ScheduleOfExternalQuotaShareAgreementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of External Quota Share Agreements [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ScheduleOfExternalQuotaShareAgreementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of external quota share agreements.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ScheduleOfExternalQuotaShareAgreementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of External Quota Share Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceWriteoffs_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Credit Loss Allowance Writeoffs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceWriteoffs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Credit Loss Allowance Writeoffs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowanceWriteoffs_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Credit Loss Allowance Writeoffs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities without Readily Determinable Fair Value [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for uncollectable premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GrossPremiumsEarnedPropertyAndCasualty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">This amount represents premiums earned from direct customers and premiums earned on policies assumed from other insurance entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GrossPremiumsEarnedPropertyAndCasualty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gross Premiums Earned, Property and Casualty</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GrossPremiumsEarnedPropertyAndCasualty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross premiums earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_GrossPremiumsEarnedPropertyAndCasualty_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross premiums earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Year 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Year 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Lease, Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPremiumsReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Premiums Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPremiumsReceivable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Premiums receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forecast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forecast</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentContinuingOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Continuing Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentContinuingOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Continuing Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unpaid losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unpaid losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Liability for Claims and Claims Adjustment Expense, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Liability for Claims and Claims Adjustment Expense, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Liability for Claims and Claims Adjustment Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofMajorityOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Majority Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofMajorityOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Majority Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NumberofMajorityOwnedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Majority Owned Subsidiaries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonredeemablePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonredeemable Preferred Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonredeemablePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonredeemable Preferred Stocks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableOtherPayablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable, Other Payables [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableOtherPayablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Florida State Board of Administration</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredButNotReportedIBNRClaimsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAgreedToSell_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Issued and Outstanding Stock Agreed To Sell</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAgreedToSell_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of Issued and Outstanding Stock Agreed To Sell</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfIssuedAndOutstandingStockAgreedToSell_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of issued and outstanding stock agreed to sell</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingenciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss Contingencies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restrictions on Cash and Cash Equivalents [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restrictions on Cash and Cash Equivalents [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Intrinsic Value,Options Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Share-based Compensation, Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Weighted-Average Assumptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income from continuing operations, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionExcessRetentionAmountReinsuredPerPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance, Excess Retention, Amount Reinsured, Per Policy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionExcessRetentionAmountReinsuredPerPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance, excess retention, amount reinsured, per policy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income (loss) before income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income (loss) before income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Allowance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Allowance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesIssuedUnderAtTheMarketProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shares Issued Under At the Market Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesIssuedUnderAtTheMarketProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued Under At the Market Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesIssuedUnderAtTheMarketProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares Issued Under At the Market Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedDepreciationLeaseholdImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated Depreciation - Leasehold improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedDepreciationLeaseholdImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Depreciation - Leasehold improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedDepreciationLeaseholdImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Depreciation - Leasehold improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InterboroInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interboro Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InterboroInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interboro Insurance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InterboroInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interboro Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InterboroInsuranceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">IIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification adjustment for realized gains, Tax (Expense) Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining in 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Nonvested Share Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Nonvested Share Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Fair Value Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value at Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossFinancialInstrumentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss, Financial Instrument [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossFinancialInstrumentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Loss, Financial Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsAndStockAppreciationRightsAwardActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsAndStockAppreciationRightsAwardActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leasehold Improvements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Note Receivable Credit Loss Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finance Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Liability Cash Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SecondEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SecondEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Second event retention level.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SecondEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Second event retention level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SurplusNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Surplus Note [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SurplusNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Surplus note.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SurplusNoteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Surplus Note</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfGrossProceedsFromSaleOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of gross proceeds from sale of shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfGrossProceedsFromSaleOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Gross Proceeds From Sale Of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfGrossProceedsFromSaleOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of gross proceeds from sale of shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerildsCatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">All Other Perilds Catastrophe Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerildsCatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">All Other Perilds Catastrophe Excess of Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerildsCatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">All Other Perilds Catastrophe Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Owned, at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherInvestmentsNotReadilyMarketableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investments Not Readily Marketable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherInvestmentsNotReadilyMarketableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Investments in Limited Partnerships</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Finite-Lived Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Statutory Net Income [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statutory Net Income [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statutory Net Income [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating and Nonoperating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mutual Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mutual Fund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Building [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities, FV-NI, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Securities, FV-NI, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTransferToHeldToMaturityAllowanceForCreditLossExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Held-to-Maturity, Transfer in, Allowance for Credit Loss, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTransferToHeldToMaturityAllowanceForCreditLossExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Loss Change, Available-for-Sale Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateFairValuePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available For Sale Securities Debt Maturities Single Maturity Date Fair Value Percent of Total [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateFairValuePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Debt Maturities Single Maturity Date Fair Value Percent of Total [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateFairValuePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertificatesOfDepositMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certificates of Deposit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertificatesOfDepositMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Certificates of Deposit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FormerGainContingenciesRecognizedInCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Former gain contingency, recognized in current period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FormerGainContingenciesRecognizedInCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Former Gain Contingencies, Recognized in Current Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FormerGainContingenciesRecognizedInCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Former gain contingencies, recognized in current period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Treasury shares, at cost; 212,083 shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCreditPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Refundable Tax Credit Percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCreditPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Refundable tax credit percent.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCreditPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Refundable tax credit percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AociBeforeTaxAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI before Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AociBeforeTaxAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AOCI before Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededCreditRiskTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ceded Credit Risk [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_PartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Interest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_PartnershipInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Income [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Acquired Finite-Lived Intangible Assets Weighted Average Life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Event retention level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Retention [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Retention Policy [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discontinued Operations - Results of Ops IIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations - Results of Ops IIC [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Discontinued Operations - Results of Ops IIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Indefinite-Lived Intangible Assets (Excluding Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Indefinite-lived intangible assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StockholdersEquityNarrativeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity Narrative [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StockholdersEquityNarrativeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stockholders' Equity Narrative [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StockholdersEquityNarrativeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity Narrative [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total, at cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less Than Twelve Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedLossesFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale, Gross Realized Losses, Fair Value at Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedLossesFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale, Gross Realized Losses, Fair Value at Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedLossesFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value at sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income before income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Stock Options Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income (loss) from discontinued operations, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable for Paid Claims and Claims Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance recoverable on paid losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Number of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Number of Stock Options Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Assets and Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Assets and Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Assets and Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Retention [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRetentionPolicyLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Retention Policy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity Note [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity Note [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuranceCommissionsAndFeesFloodProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Insurance Commissions and Fees, Flood Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuranceCommissionsAndFeesFloodProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insurance Commissions and Fees, Flood Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_InsuranceCommissionsAndFeesFloodProgram_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insurance commissions and fees under Flood Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, cash equivalents and restricted cash at beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, cash equivalents and restricted at end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total cash, cash equivalents and restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-Tax Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsurancePayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsurancePayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsurancePayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Reinsurance payable on premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income and Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of Individual [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OtherNonCashTransactions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Non Cash Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OtherNonCashTransactions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other non cash transactions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OtherNonCashTransactions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other non-cash transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Stock Options Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, within One Year, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, within One Year, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due in one year or less</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired finite-lived intangible assets, weighted average life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReinsurancePayables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Reinsurance Payables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReinsurancePayables_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance payable on premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Debt Securities, Available-for-Sale, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesOwnedAndOtherInvestmentsNotReadilyMarketableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Owned and Other Investments Not Readily Marketable Disclosure [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesOwnedAndOtherInvestmentsNotReadilyMarketableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities Owned and Other Investments Not Readily Marketable Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedGainsFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale, Gross Realized Gains, Fair Value at Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedGainsFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale, Gross Realized Gains, Fair Value at Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleGrossRealizedGainsFairValueAtSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value at sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Realized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Realized Gains (Losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisaggregationOfRelevantExpenseCaptionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Relevant Expense Captions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisaggregationOfRelevantExpenseCaptionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disaggregation of relevant expense captions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Aggregate Intrinsic Value,Options Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumReceivableCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premium Receivable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumReceivableCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premium Receivable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumReceivableCreditLossExpenseReversal_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Premium Receivable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsidiary [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCAnnouncedDowngradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kroll Bond Rating Agency, LLC Announced Downgrade Of Rating [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCAnnouncedDowngradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kroll Bond Rating Agency, LLC announced downgrade of rating.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_KrollBondRatingAgencyLLCAnnouncedDowngradeOfRatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kroll Bond Rating Agency, LLC Announced Downgrade of Rating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RetensionLossEvents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retension Loss Events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RetensionLossEvents_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Retension loss events.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RetensionLossEvents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retension loss events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsWrittenGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premiums Written, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsWrittenGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross premiums written</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfWrittenPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of written premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfWrittenPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Written Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_PercentageOfWrittenPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of written premiums.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash and Cash Equivalents Items [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash and Cash Equivalents Items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Groups, Including Discontinued Operations [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Groups, Including Discontinued Operations [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedAmortizationOfSoftwareAndHardware_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated Amortization of Software and Hardware</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedAmortizationOfSoftwareAndHardware_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Amortization of Software and Hardware</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedAmortizationOfSoftwareAndHardware_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Amortization of Software and Hardware</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross carrying amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted-average diluted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares outstanding, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededCreditRiskLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ceded Credit Risk [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoverageReturnPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Program Provide Sufficient Coverage Return Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoverageReturnPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Program provides sufficient coverage return period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvideSufficientCoverageReturnPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Program provides sufficient coverage return period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in net unrealized losses on investments, Net-of-Tax Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeinOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in Operating Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeinOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Operating Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeinOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt and Equity Securities, FV-NI [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt and Equity Securities, FV-NI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SummaryOfPremiumReceivedAndCapitalAtRiskTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Premium Received And Capital At Risk [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SummaryOfPremiumReceivedAndCapitalAtRiskTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary Of Premium Received And Capital At Risk [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SummaryOfPremiumReceivedAndCapitalAtRiskTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Premium Received and Capital at Risk</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RegulatoryAssetsNoncurrentFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Regulatory Assets, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RegulatoryAssetsNoncurrentFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Regulatory Assets, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RegulatoryAssetsNoncurrentFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash on deposit (regulatory deposits)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification adjustment for net realized investment losses (gains), Pre-Tax Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Reclassification adjustment for net realized investment losses (gains)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Lease Terms [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Lease Terms [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Lease Terms [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statutory Accounting Practices, Statutory Net Income Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statutory net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AgencyAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agency Agreements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AgencyAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agency agreements.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AgencyAgreementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agency Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Operating Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of operating segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedComputerSoftwareImpairments1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Computer Software, Impairments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedComputerSoftwareImpairments1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized Computer Software, Impairments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total general and administrative expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateralized Mortgage-Backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage-backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssociationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Association Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssociationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Association Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssociationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Association Fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssociationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Association fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premium Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premium Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Premium Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Declared [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsDeclaredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Dividends Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationRevenueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Revenue [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationRevenueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation revenue.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationRevenueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">REVENUE:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible assets subject to amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net carrying amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Prices,Options Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_A150MSeniorNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">150M Senior Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_A150MSeniorNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">150M Senior Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_A150MSeniorNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">150M Senior Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Utilities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Utilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pending Accounting Pronouncements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee, Operating Lease, Liability, Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Year 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Year 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining in 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Gain (Loss) on Disposition of Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fixed asset disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedOtherComprehensiveIncomeLossTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated Other Comprehensive Income (Loss), Tax (Expense) Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedOtherComprehensiveIncomeLossTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Tax (Expense) Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AccumulatedOtherComprehensiveIncomeLossTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss), Tax (Expense) Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss) Note [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt instrument, redemption description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilityBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Public Utility, Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PublicUtilityBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public Utilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidAndUnpaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidAndUnpaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Reinsurance recoverable on paid and unpaid losses, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidAndUnpaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Reinsurance recoverable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceRecoverablesOnPaidAndUnpaidLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance recoverable on paid and unpaid losses, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ThirdEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Third Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ThirdEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ThirdEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Third event retention level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of principal amount of the notes to be redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Credit Loss Allowances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Credit Loss Allowances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalCreditLossAllowances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Credit Loss Allowances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized stock compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, outstanding shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceContractDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceContractDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceContractDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscgrosswrittenpremiumsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">AmRisc gross written premiums [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscgrosswrittenpremiumsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AmRisc gross written premiums [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmRiscgrosswrittenpremiumsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AmRisc gross written premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SaleAndRealizedLossOnFixedMaturityPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale and Realized Loss on Fixed Maturity Portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SaleAndRealizedLossOnFixedMaturityPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale And Realized Loss On Fixed Maturity Portfolio [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SaleAndRealizedLossOnFixedMaturityPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale and realized loss on fixed maturity portfolio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentOperatingActivitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Activities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentOperatingActivitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Activities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NonVestedCommonStockGrantsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-Vested Common Stock Grants [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NonVestedCommonStockGrantsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non-Vested Common Stock Grants [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_NonVestedCommonStockGrantsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Vested Common Stock Grants [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discontinued Operations - Results of Ops UPC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations - Results of Ops UPC [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsResultsOfOpsUPCTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discontinued Operations - Results of Ops UPC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share (EPS)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CededLossesAllOtherPerilsContract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ceded losses - All Other Perils Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CededLossesAllOtherPerilsContract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ceded losses - All Other Perils Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CededLossesAllOtherPerilsContract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ceded losses - All Other Perils Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignGovernmentDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Security, Government, Non-US [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ForeignGovernmentDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Foreign Government</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Catastrophe Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Catastrophe Excess of Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CatastropheExcessOfLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Catastrophe Excess of Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations and Disposal Groups [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComputerEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Computer Equipment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComputerEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Computer Hardware and Software</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income attributable to ACIC common stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventLevelRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Event Level Retention</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventLevelRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Event Level Retention</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventLevelRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Event Level Retention</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ForzaInsuranceHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forza Insurance Holdings LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ForzaInsuranceHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forza insurance holdings llc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ForzaInsuranceHoldingsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forza</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance Recoverable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding Options, Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Aggregate Intrinsic Value,Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Aggregate Intrinsic Value,Options Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Gain (Loss), before Adjustment, Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in net unrealized losses on investments,Tax (Expense) Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt and Equity Securities, Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtAndEquitySecuritiesGainLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net realized losses on investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities, FV-NI, Unrealized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized gains (losses) on equity securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected annual dividend yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProvisionForCreditLossesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision For Credit Losses (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProvisionForCreditLossesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Provision for credit losses (reversal).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProvisionForCreditLossesReversal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for (reversal of) expected credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededCreditRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurer, Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets, Net (Excluding Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible Assets, Net (Excluding Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Intangible assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfBusinesses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Divestiture of Businesses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfBusinesses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash proceeds received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortDurationInsuranceAndDepositContractsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Duration Insurance and Deposit Contracts [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortDurationInsuranceAndDepositContractsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for unpaid losses and loss adjustment expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk-free interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exercise Price Range [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exercise Price Range [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">INVESTING ACTIVITIES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Credit Loss Allowance Activity [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss Allowance Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance For Expected Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loss on disposal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in Accounting Principle, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Unearned Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets Amortization Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Intangible Assets Subject to Amortization and Not Fully Amortized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revision of Prior Period [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisposals_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Disposals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisposals_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment, Disposals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBasisPercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Program Provides Sufficient Coverage Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Program provides sufficient coverage period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ProgramProvidesSufficientCoveragePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Program provides sufficient coverage period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FixedMaturitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Maturities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FixedMaturitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed Maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActFederalIncomeTaxImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CARES Act Federal Income Tax Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActFederalIncomeTaxImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CARES Act Federal Income Tax Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActFederalIncomeTaxImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CARES Act Federal Income Tax Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Unrealized Loss on Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Unrealized Loss on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetInvestmentIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainContingencyUnrecordedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain Contingency, Unrecorded Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainContingencyUnrecordedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain contingency unrecorded amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_FL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">FLORIDA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_FL_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Florida</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShorelineReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shoreline Re [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShorelineReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shoreline Re.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShorelineReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shoreline Re</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Consideration Received on Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock, Consideration Received on Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Including Discontinued Operation, Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group, Including Discontinued Operation, Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Liabilities held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FormerGainContingencyRecognizedInCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Former Gain Contingency, Recognized in Current Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FormerGainContingencyRecognizedInCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Former gain contingency recognized in current period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeRetentionTaxCreditRefund_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Retention Tax Credit Refund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeRetentionTaxCreditRefund_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee retention tax credit refund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeRetentionTaxCreditRefund_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee retention tax credit refund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EmployeeRetentionTaxCreditRefund_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Employee retention tax credit refunds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueOfLimitedPartnershipInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Value of Limited Partnership Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueOfLimitedPartnershipInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Limited Partnership Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueOfLimitedPartnershipInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Limited Partnership Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExternalThirdPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">External Third Party [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExternalThirdPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">External third-party.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExternalThirdPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">External Third-Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsidiaryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsidiary [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on disposition of former subsidiary</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">[Line Items] for Reinsurance Recoverable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less:Weighted Average Grant Date Fair Value Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForCreditLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Credit Losses [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForCreditLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Operating Capital [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in operating assets and liabilities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceExcessRetentionLevelPerEvent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance, excess retention level per event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceExcessRetentionLevelPerEvent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance, Excess Retention Level Per Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceExcessRetentionLevelPerEvent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance, excess retention level per event.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Property and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Lease Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Lease Terms [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_WeightedAverageLeaseTermsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Lease Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional Paid-in Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralInsuranceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General Insurance Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralInsuranceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General Insurance Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralInsuranceExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Liability insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StockRepurchaseProgramAuthorizedAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Repurchase Program, Authorized, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StockRepurchaseProgramAuthorizedAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Repurchase Program, Authorized Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeniorNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeniorNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Senior Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and Equipment, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities, FV-NI, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity securities, fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNi_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due in one year or less</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Statutory Net Income [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statutory Net Income [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_StatutoryNetIncomeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statutory Net Income [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_DirectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Director [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_DirectorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Director</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CashCashEquivalentsAndShortTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash, Cash Equivalents And Short-Term Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CashCashEquivalentsAndShortTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents And Short-Term Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CashCashEquivalentsAndShortTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedVestingTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assumed Vesting Term of Options for Risk free Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedVestingTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Assumed vesting term of options for risk free interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedVestingTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assumed vesting term of options for risk free interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">FINANCING ACTIVITIES</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Expected term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesFairValueDisclosurePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available-for-sale Securities, Fair Value Disclosure, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesFairValueDisclosurePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-sale Securities, Fair Value Disclosure, Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesFairValueDisclosurePercentOfTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventOccurrenceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Event Occurrence Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventOccurrenceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Event occurrence limit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EventOccurrenceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Event occurrence limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Exercisable contractual term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Remaining Contractual Term (years), Options Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset, Held-in-Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets Held-in-trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounts Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounts payable and accrued expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement, Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Future Minimum Rental Payments for Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Policy Acquisition Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred policy acquisition costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Deferred Policy Acquisition Cost, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Deferred Policy Acquisition Cost, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Deferred policy acquisition costs, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealizedGainLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Realized Gain (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealizedGainLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Realized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedContractualTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assumed Contractual Term of Options for Risk Free Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedContractualTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Assumed contractual term of options for risk free interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AssumedContractualTermOfOptionsForRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assumed contractual term of options for risk free interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Investments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Investments_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemablePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redeemable Preferred Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RedeemablePreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable Preferred Stocks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIncomeTaxRefunds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Income Tax Refunds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIncomeTaxRefunds_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Proceeds from Income Tax Refunds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIncomeTaxRefunds_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Income taxes refunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EquitysecuritiesFVNIPercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity securities, FV-NI Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EquitysecuritiesFVNIPercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity securities, FV-NI Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_EquitysecuritiesFVNIPercentofTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable, Noncurrent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes payable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Notes payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment Income [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FirstEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FirstEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FirstEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">First event retention level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization, Nonproduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasuryAndGovernmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Treasury and Government [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasuryAndGovernmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Government and Agency Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForErrorCorrectionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Error Correction, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForErrorCorrectionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Error Correction, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Credit Loss Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmericanCoastalInsuranceCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">American Coastal Insurance Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmericanCoastalInsuranceCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">American Coastal Insurance Company [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmericanCoastalInsuranceCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">American Coastal Insurance Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AmericanCoastalInsuranceCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">AmCoastal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accrued Investment Income Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accrued investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impairment of Intangible Assets (Excluding Goodwill)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Impairment of Intangible Assets (Excluding Goodwill), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment of amortizing or non-amortizing intangible assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Weighted Average Exercise Prices,Options Exercised</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Accumulated amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, $0.0001 par value; 100,000,000 shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of States in which Entity Operates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of States in which Entity Operates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance Recoverable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverables [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAllowanceForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premium Receivable, Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAllowanceForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premium Receivable Credit Loss Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DocumentAndEntityInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Document and Entity Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DocumentAndEntityInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document and Entity Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DocumentAndEntityInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document and Entity Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReinsuranceContractAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Contract [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Intrinsic Value,Options Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Realized Gain, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Options Expired In Period Total Intrinsic Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award options expired in period total intrinsic value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodTotalIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Aggregate Intrinsic Value,Options Expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amounts of Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction, Amounts of Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DirectorAndOfficeLiabilityInsuranceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Director and Office Liability Insurance Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DirectorAndOfficeLiabilityInsuranceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Director and Office Liability Insurance Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DirectorAndOfficeLiabilityInsuranceLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Director and Office Liability Insurance Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations, Per Diluted Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Continuing operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Deferred Policy Acquisition Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeferredPolicyAcquisitionCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deferred policy acquisition costs, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premiums Receivable, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Premiums receivable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Premiums Receivable, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsReceivableAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premiums receivable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerilsCatastropheExcessOfLossAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">All Other Perils Catastrophe Excess Of Loss Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerilsCatastropheExcessOfLossAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">All other perils catastrophe excess of loss agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AllOtherPerilsCatastropheExcessOfLossAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">All Other Perils Catastrophe Excess of Loss Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement, Option, Exercise Price Range</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Year Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Year Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActDeferredTaxAssetImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CARES Act Deferred Tax Asset Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActDeferredTaxAssetImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CARES Act Deferred Tax Asset Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CARESActDeferredTaxAssetImpact_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CARES Act Deferred Tax Asset Impact</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Finite-Lived Intangible Assets, Estimated Amortization Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QuotaShareAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Quota Share Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QuotaShareAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Quota share agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_QuotaShareAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Quota Share Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expected volatility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, authorized shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeInGrossUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in Gross Unearned Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeInGrossUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Gross Unearned Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeInGrossUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in gross unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ChangeInGrossUnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in gross unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Costs and Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs and Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Debt [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Issuance Cost Rollforward</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsEarnedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Premiums Earned, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsEarnedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net premiums earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PremiumsEarnedNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net premiums earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceCapitalAtRisk_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Capital At Risk</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceCapitalAtRisk_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance capital at risk.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceCapitalAtRisk_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital at Risk</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">UPC Re</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UPC Re [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_UPCReMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">UPC Re</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statutory Accounting Practices Disclosure [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Statutory Accounting and Regulation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Refundable Tax Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Refundable tax credit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_RefundableTaxCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Refundable tax credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AuditFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Audit Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AuditFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Audit Fees [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AuditFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Audit fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AuditFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Audit fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OutsideOfInterboroInsuranceCompanyStandAloneResultsDiscontinuedOperationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Outside of Interboro Insurance Company Stand Alone Results, Discontinued Operation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OutsideOfInterboroInsuranceCompanyStandAloneResultsDiscontinuedOperationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Outside of IIC stand alone results, discontinued operation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_OutsideOfInterboroInsuranceCompanyStandAloneResultsDiscontinuedOperationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outside of Interboro Insurance Company Stand Alone</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income (Expense)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid in Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional paid-in capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Exercise Prices,Options Exercisable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Securities, FV-NI, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquitySecuritiesFvNiRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Equity Securities, FV-NI, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseCostsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Costs [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseCostsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Costs [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseCostsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Costs [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Provision (benefit) for income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Including Discontinued Operation Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disposal group including discontinued operation expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DisposalGroupIncludingDiscontinuedOperationExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EXPENSES:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of common stock, including exercise of stock options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of common stock, including exercise of stock options</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InsuranceDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insurance Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InsuranceDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statutory Accounting and Regulation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Costs and Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EXPENSES:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ImpactOfDeconsolidationOnOCIDiscontinuedOperations._lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Impact of Deconsolidation on OCI - Discontinued Operations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ImpactOfDeconsolidationOnOCIDiscontinuedOperations._lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impact of Deconsolidation on OCI - Discontinued Operations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ImpactOfDeconsolidationOnOCIDiscontinuedOperations._lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impact of deconsolidation of discontinued operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statutory Accounting Practices, Statutory Capital and Surplus, Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statutory capital and surplus balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US States and Political Subdivisions Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">States, Municipalities and Political Subdivisions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">[Line Items] for Credit Loss Allowance Activity [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss Allowance Activity [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CreditLossAllowanceActivityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance For Expected Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">[Domain] for Reinsurance Recoverable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance Recoverable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceRecoverableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance Recoverable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Liability Undiscounted Excess Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Liability Undiscounted Excess Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less: Imputed interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Property, Plant, and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Cost of property, equipment and capitalized software acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cost of property, equipment and capitalized software acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partner [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limited Partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net realized investment gains (losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net realized investment losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Restricted Shares Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability for Unpaid Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Assets and Liabilities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Assets and Liabilities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_LeaseAssetsandLiabilitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease Assets and Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restrictions on Cash and Cash Equivalents [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restrictions on Cash and Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsequentEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Subsequent Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsequentEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Retention Level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SubsequentEventRetentionLevel_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent event retention level</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Comprehensive Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accumulated Other Comprehensive Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Legal fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock Issued During Period, Shares, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of common stock, including exercise of stock options, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unearned Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unearned Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnearnedPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unearned premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Number of Restricted Shares Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Earnings available to ACIC common stockholders per share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CapitalizedSoftwareDisposalGross_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized Software Disposal - Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CapitalizedSoftwareDisposalGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Software Disposal - Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_CapitalizedSoftwareDisposalGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized Software Disposal - Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of Individual [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset and mortgage backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Including Discontinued Operation, Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Assets held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss), net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Loss, Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable, Credit Loss, Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExcessPerRiskAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excess Per Risk Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExcessPerRiskAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Excess Per Risk Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ExcessPerRiskAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Excess per risk agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InsuranceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Insurance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InsuranceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Insurance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ConsolidatedEntityExcludingNoncontrollingInterestsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Consolidated Entity Excluding Noncontrolling Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ConsolidatedEntityExcludingNoncontrollingInterestsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entity Excluding Noncontrolling Interests [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ConsolidatedEntityExcludingNoncontrollingInterestsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entity Excluding Noncontrolling Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Remaining Lease Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining lease term, operating leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorMoreAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available For Sale Securities Continuous Unrealized Loss Position Twelve Months or More [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorMoreAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Continuous Unrealized Loss Position Twelve Months or More [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorMoreAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Twelve Months or More</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Present value of lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments, at fair value:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property and equipment, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DividendPaidCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividend Paid, Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DividendPaidCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Paid, Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DividendPaidCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock, Dividends, Per Share, Cash Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prior Year Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior Year Claims and Claims Adjustment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Discontinued Operations - Assets &amp; Liabilities IIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operations - Assets &amp; Liabilities IIC [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_DiscontinuedOperationsAssetsLiabilitiesIICTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Discontinued Operations - Assets &amp; Liabilities IIC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income before other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total Lease Future Payments Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Lease Future Payments Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_TotalLeaseFuturePaymentsYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retained Earnings (Deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ServiceEntitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Service Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ServiceEntitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Service Entities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ServiceEntitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Service Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income (loss) from discontinued operations, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefits and Share-Based Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefits and Share-Based Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Employee compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Noncash Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock based compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments of Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceAggregateRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance, Aggregate Retention</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceAggregateRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance, aggregate retention.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_ReinsuranceAggregateRetention_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance, aggregate retention</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesAvailableForIssuanceUnderAtTheMarketOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Shares available for issuance under at the market offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesAvailableForIssuanceUnderAtTheMarketOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares available for issuance under at the market offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_SharesAvailableForIssuanceUnderAtTheMarketOffering_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares available for issuance under at the market offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average discount rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueTransfersBetweenLevelOneTwoAndThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Transfers Between Level One Two And Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueTransfersBetweenLevelOneTwoAndThree_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value transfers between level one two and three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_FairValueTransfersBetweenLevelOneTwoAndThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value transfer, investments between levels</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by financing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDatePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available For Sale Securities Debt Maturities Single Maturity Date Percent of Total [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDatePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Debt Maturities Single Maturity Date Percent of Total [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDatePercentofTotalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percent of Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CededCreditRiskReinsurerDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurer, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLongTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Long-Term Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLongTermInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Long-term Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Corporate Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Corporate Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Reinsurancerecoverableallowanceforcreditlosswriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reinsurance recoverable, allowance for credit loss, writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Reinsurancerecoverableallowanceforcreditlosswriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reinsurance recoverable, allowance for credit loss, writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="acic_Reinsurancerecoverableallowanceforcreditlosswriteoff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reinsurance recoverable, allowance for credit loss, writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Available-for-sale Securities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">OPERATING ACTIVITIES</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Land [Member]</link:label>
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  <xsd:element id="acic_KrollBondRatingAgencyLLCAnnouncedDowngradeOfRatingMember" name="KrollBondRatingAgencyLLCAnnouncedDowngradeOfRatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAbstract" name="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="acic_SharesAvailableForIssuanceUnderAtTheMarketOffering" name="SharesAvailableForIssuanceUnderAtTheMarketOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
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  <xsd:element id="acic_ExternalThirdPartyMember" name="ExternalThirdPartyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_PercentageOfShareAcquired" name="PercentageOfShareAcquired" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_TotalLeaseFuturePayments" name="TotalLeaseFuturePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_NonVestedCommonStockGrantsAbstract" name="NonVestedCommonStockGrantsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_TotalLeaseFuturePaymentsYear3" name="TotalLeaseFuturePaymentsYear3" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AmRiscgrosswrittenpremiumsMember" name="AmRiscgrosswrittenpremiumsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_SubsequentEventRetentionLevel" name="SubsequentEventRetentionLevel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ReinsurancePremiumReceived" name="ReinsurancePremiumReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodTotalIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodTotalIntrinsicValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_CatastropheExcessOfLossMember" name="CatastropheExcessOfLossMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_EmployeeRetentionTaxCreditRefund" name="EmployeeRetentionTaxCreditRefund" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ImpactOfDeconsolidationOnOCIDiscontinuedOperations." name="ImpactOfDeconsolidationOnOCIDiscontinuedOperations." type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_DisaggregationOfRelevantExpenseCaptionsAbstract" name="DisaggregationOfRelevantExpenseCaptionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValuePercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_CapitalizedSoftwareDisposalGross" name="CapitalizedSoftwareDisposalGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AmRiscFeesandCommissionMember" name="AmRiscFeesandCommissionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDatePercentofTotalAbstract" name="AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDatePercentofTotalAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_SharesIssuedUnderAtTheMarketProgram" name="SharesIssuedUnderAtTheMarketProgram" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_SummaryOfPremiumReceivedAndCapitalAtRiskTableTextBlock" name="SummaryOfPremiumReceivedAndCapitalAtRiskTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_EventOccurrenceLimit" name="EventOccurrenceLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_FairValueOfLimitedPartnershipInterest" name="FairValueOfLimitedPartnershipInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ChangeinOperatingLeaseLiability" name="ChangeinOperatingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_TotalLeaseFuturePaymentsThereafter" name="TotalLeaseFuturePaymentsThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AssumedContractualTermOfOptionsForRiskFreeInterestRate" name="AssumedContractualTermOfOptionsForRiskFreeInterestRate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_KrollBondRatingAgencyLLCIfAnnouncedUpgradeOfRatingMember" name="KrollBondRatingAgencyLLCIfAnnouncedUpgradeOfRatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_LeaseAssetsandLiabilitiesTableTextBlock" name="LeaseAssetsandLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_DiscontinuedOperationsResultsOfOpsIICTableTextBlock" name="DiscontinuedOperationsResultsOfOpsIICTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_TotalCreditLossAllowanceWriteoffs" name="TotalCreditLossAllowanceWriteoffs" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValuePercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_RefundableTaxCreditPercent" name="RefundableTaxCreditPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasisPercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasisPercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_OtherNonCashTransactions" name="OtherNonCashTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_DebtInstsrumentLeverageRatio" name="DebtInstsrumentLeverageRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_AmRisccededpremiumswrittenMember" name="AmRisccededpremiumswrittenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_InsuranceCommissionsAndFeesFloodProgram" name="InsuranceCommissionsAndFeesFloodProgram" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_EmployeeMember" name="EmployeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_TotalLeaseFuturePaymentsYear2" name="TotalLeaseFuturePaymentsYear2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AllOtherPerildsCatastropheExcessOfLossMember" name="AllOtherPerildsCatastropheExcessOfLossMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AccumulatedOtherComprehensiveIncomeLossTaxExpenseBenefit" name="AccumulatedOtherComprehensiveIncomeLossTaxExpenseBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_AmericanCoastalInsuranceCompanyMember" name="AmericanCoastalInsuranceCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_CARESActDeferredTaxAssetImpact" name="CARESActDeferredTaxAssetImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_StatutoryNetIncomeLineItems" name="StatutoryNetIncomeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_EventRetentionLevel" name="EventRetentionLevel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_AvailableForSaleGrossRealizedGainsLossesFairValueAtSale" name="AvailableForSaleGrossRealizedGainsLossesFairValueAtSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_Paymentsoutstanding" name="Paymentsoutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_ReinsuranceRecoverableLineItems" name="ReinsuranceRecoverableLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_ReinsuranceExcessRetentionLevelPerEvent" name="ReinsuranceExcessRetentionLevelPerEvent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_CreditLossAllowanceActivityLineItems" name="CreditLossAllowanceActivityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_ThirdEventRetentionLevel" name="ThirdEventRetentionLevel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ReinsuranceRecoverablesTableTextBlock" name="ReinsuranceRecoverablesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_NumberofMajorityOwnedSubsidiaries" name="NumberofMajorityOwnedSubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_SaleAndRealizedLossOnFixedMaturityPortfolioMember" name="SaleAndRealizedLossOnFixedMaturityPortfolioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AllOtherPerilsCatastropheExcessOfLossAgreementMember" name="AllOtherPerilsCatastropheExcessOfLossAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_ReinsuranceRecoverableTable" name="ReinsuranceRecoverableTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_StockholdersEquityNarrativeAbstract" name="StockholdersEquityNarrativeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_Weightedaverageremainingexpenseperiod" name="Weightedaverageremainingexpenseperiod" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_DisposalGroupIncludingDiscontinuedOperationRevenueAbstract" name="DisposalGroupIncludingDiscontinuedOperationRevenueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_ProgramProvidesSufficientCoveragePeriod" name="ProgramProvidesSufficientCoveragePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_ReinsuranceRecoverableAxis" name="ReinsuranceRecoverableAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_PercentageOfFloodPremiumsCeded" name="PercentageOfFloodPremiumsCeded" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_ReinstatementPremiumAllOtherPerils" name="ReinstatementPremiumAllOtherPerils" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_TotalLeaseLiabilityUndiscountedExcessAmount" name="TotalLeaseLiabilityUndiscountedExcessAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_PercentageOfSingeOccurrenceExceedingProtectionPurchased" name="PercentageOfSingeOccurrenceExceedingProtectionPurchased" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_ExcessPerRiskAgreementMember" name="ExcessPerRiskAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValuePercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_EquitysecuritiesFVNIPercentofTotal" name="EquitysecuritiesFVNIPercentofTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_RetensionLossEvents" name="RetensionLossEvents" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ProvisionForCreditLossesReversal" name="ProvisionForCreditLossesReversal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_CatastropheAggregateExcessOfLossMember" name="CatastropheAggregateExcessOfLossMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_TaxBenefitRelatedToSaleAndRealizedLossOnFixedMaturityPortfolio" name="TaxBenefitRelatedToSaleAndRealizedLossOnFixedMaturityPortfolio" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_PercentageOfWrittenPremiums" name="PercentageOfWrittenPremiums" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_ChangeInGrossUnearnedPremiums" name="ChangeInGrossUnearnedPremiums" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_QuotaShareAgreementMember" name="QuotaShareAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AssumedVestingTermOfOptionsForRiskFreeInterestRate" name="AssumedVestingTermOfOptionsForRiskFreeInterestRate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_FairValueTransfersBetweenLevelOneTwoAndThree" name="FairValueTransfersBetweenLevelOneTwoAndThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_TotalLeaseFuturePaymentsYear4" name="TotalLeaseFuturePaymentsYear4" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_AvailableforsaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateCostPercentofTotal" name="AvailableforsaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateCostPercentofTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_ServiceEntitiesMember" name="ServiceEntitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_SecondEventRetentionLevel" name="SecondEventRetentionLevel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ReinsuranceContractDomain" name="ReinsuranceContractDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AccumulatedAmortizationOfSoftwareAndHardware" name="AccumulatedAmortizationOfSoftwareAndHardware" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_UPCReMember" name="UPCReMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleGrossRealizedLossesFairValueAtSale" name="AvailableForSaleGrossRealizedLossesFairValueAtSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_DirectorAndOfficeLiabilityInsuranceLimit" name="DirectorAndOfficeLiabilityInsuranceLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisPercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostBasisPercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_ProgramProvidesSufficientCoverageProbabilityRate" name="ProgramProvidesSufficientCoverageProbabilityRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_DividendPaidCommonStock" name="DividendPaidCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_LeaseAssetsandLiabilitiesAbstract" name="LeaseAssetsandLiabilitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_CARESActFederalIncomeTaxImpact" name="CARESActFederalIncomeTaxImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_ForzaInsuranceHoldingsLLCMember" name="ForzaInsuranceHoldingsLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercentOfTotal" name="AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValuePercentOfTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="acic_NumberofWhollyOwnedSubsidiaries" name="NumberofWhollyOwnedSubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_CashCashEquivalentsAndShortTermInvestmentsMember" name="CashCashEquivalentsAndShortTermInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorMoreAbstract" name="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorMoreAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_ConsolidatedEntityExcludingNoncontrollingInterestsMember" name="ConsolidatedEntityExcludingNoncontrollingInterestsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_OutsideOfInterboroInsuranceCompanyStandAloneResultsDiscontinuedOperationMember" name="OutsideOfInterboroInsuranceCompanyStandAloneResultsDiscontinuedOperationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="acic_PercentageOfGrossProceedsFromSaleOfShares" name="PercentageOfGrossProceedsFromSaleOfShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="acic_QualifiedWagesPerEmployee" name="QualifiedWagesPerEmployee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="acic_TotalLeaseLiability" name="TotalLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="acic_ReinsuranceAggregateRetention" name="ReinsuranceAggregateRetention" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
</xsd:schema>
