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v2.4.1.9

Note 3 - Loans/Leases Receivable (Details) - Allowance for Estimated Losses on Loans/Leases (USD $) | 3 Months Ended |
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Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | $ 23,074,365 us-gaap_FinancingReceivableAllowanceForCreditLosses |  | $ 21,448,048 us-gaap_FinancingReceivableAllowanceForCreditLosses |  |
Balance, ending | 23,883,273 us-gaap_FinancingReceivableAllowanceForCreditLosses |  | 22,653,270 us-gaap_FinancingReceivableAllowanceForCreditLosses |  |
Allowance for impaired loans/leases | 4,072,935 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 |  |  | 5,244,673 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 |
Allowance for nonimpaired loans/leases | 19,810,338 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment |  |  | 17,829,692 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment |
Allowance for estimated losses on loans/leases | 23,883,273 us-gaap_FinancingReceivableAllowanceForCreditLosses |  | 22,653,270 us-gaap_FinancingReceivableAllowanceForCreditLosses |  |
Impaired loans/leases | 15,103,777 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment |  |  | 19,006,641 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment |
Nonimpaired loans/leases | 1,632,349,794 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment |  |  | 1,604,332,309 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment |
Loans/leases | 1,647,453,571 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome |  |  | 1,623,338,950 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome |
Allowance as a percentage of impaired loans/leases | 26.97%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment |  |  | 27.59%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment |
Allowance as a percentage of nonimpaired loans/leases | 1.21%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment |  |  | 1.11%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment |
Total allowance as a percentage of total loans/leaess | 1.45%qcrh_TotalAllowanceAsAPercentageOfLoansLeases |  |  | 1.42%qcrh_TotalAllowanceAsAPercentageOfLoansLeases |
Provisions (credits) charged to expense | 1,710,456 us-gaap_ProvisionForLoanLeaseAndOtherLosses |  | 1,094,162 us-gaap_ProvisionForLoanLeaseAndOtherLosses |  |
Loans/leases charged off | (1,107,663)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs |  | (79,321)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs |  |
Recoveries on loans/leases previously charged off | 206,115 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery |  | 190,381 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery |  |
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | 8,750,317 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | 5,648,774 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Balance, ending | 9,093,649 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | 6,647,658 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Allowance for impaired loans/leases | 2,513,023 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 3,300,199 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Allowance for nonimpaired loans/leases | 6,580,626 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 5,450,118 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Allowance for estimated losses on loans/leases | 9,093,649 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | 6,647,658 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Impaired loans/leases | 5,301,166 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 7,279,709 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Nonimpaired loans/leases | 529,584,251 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 516,647,431 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Loans/leases | 534,885,417 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 523,927,140 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Allowance as a percentage of impaired loans/leases | 47.41%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 45.33%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Allowance as a percentage of nonimpaired loans/leases | 1.24%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 1.05%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Total allowance as a percentage of total loans/leaess | 1.70%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |  | 1.67%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |
Provisions (credits) charged to expense | 388,641 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | 976,790 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Loans/leases charged off | (200,301)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | (4,023)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Recoveries on loans/leases previously charged off | 154,992 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  | 26,117 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = qcrh_CommercialAndIndustrialMember |  |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | 8,353,386 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 10,705,434 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Balance, ending | 8,838,204 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 10,587,657 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Allowance for impaired loans/leases | 828,837 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 1,170,020 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance for nonimpaired loans/leases | 8,009,367 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 7,183,366 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance for estimated losses on loans/leases | 8,838,204 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 10,587,657 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Impaired loans/leases | 5,495,701 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 7,433,383 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Nonimpaired loans/leases | 704,186,005 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 694,707,039 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Loans/leases | 709,681,706 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 702,140,422 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance as a percentage of impaired loans/leases | 15.08%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 15.74%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance as a percentage of nonimpaired loans/leases | 1.14%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 1.03%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Total allowance as a percentage of total loans/leaess | 1.25%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |  | 1.19%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Provisions (credits) charged to expense | 835,894 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | (229,985)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Loans/leases charged off | (351,076)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | (4,098)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Recoveries on loans/leases previously charged off |  |  | 116,306 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  |
Finance Leases Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | 3,442,915 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember | [1] | 2,517,217 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Balance, ending | 3,310,973 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember | [1] | 2,820,239 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Allowance for impaired loans/leases | 283,485 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 356,996 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance for nonimpaired loans/leases | 3,027,488 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 3,085,919 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance for estimated losses on loans/leases | 3,310,973 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember | [1] | 2,820,239 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Impaired loans/leases | 1,123,198 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 1,339,272 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Nonimpaired loans/leases | 166,120,813 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 164,693,144 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Loans/leases | 167,244,011 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember | [1] |  | 166,032,416 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember | [1]
Allowance as a percentage of impaired loans/leases | 25.24%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 26.66%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance as a percentage of nonimpaired loans/leases | 1.82%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 1.87%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Total allowance as a percentage of total loans/leaess | 1.98%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |  | 2.07%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Provisions (credits) charged to expense | 403,452 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 352,647 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Loans/leases charged off | (547,492)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | (65,733)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Recoveries on loans/leases previously charged off | 12,098 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 16,108 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  |
Residential Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | 1,525,952 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,395,849 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Balance, ending | 1,597,754 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,388,885 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Allowance for impaired loans/leases | 180,160 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 151,663 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance for nonimpaired loans/leases | 1,417,594 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 1,374,289 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance for estimated losses on loans/leases | 1,597,754 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,388,885 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Impaired loans/leases | 1,846,567 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 1,788,729 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Nonimpaired loans/leases | 161,893,294 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 156,843,763 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Loans/leases | 163,739,861 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember | [2] |  | 158,632,492 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember | [2]
Allowance as a percentage of impaired loans/leases | 9.76%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 8.48%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance as a percentage of nonimpaired loans/leases | 0.88%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 0.88%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Total allowance as a percentage of total loans/leaess | 0.98%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |  | 0.96%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Provisions (credits) charged to expense | 71,802 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | (4,355)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Loans/leases charged off |  |  | (2,712)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Recoveries on loans/leases previously charged off |  |  | 103 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  |
Consumer Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Balance, beginning | 1,001,795 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 1,180,774 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
Balance, ending | 1,042,693 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 1,208,831 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
Allowance for impaired loans/leases | 267,430 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 265,795 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance for nonimpaired loans/leases | 775,263 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 736,000 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance for estimated losses on loans/leases | 1,042,693 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 1,208,831 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
Impaired loans/leases | 1,337,145 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 1,165,548 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Nonimpaired loans/leases | 70,565,431 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 71,440,932 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Loans/leases | 71,902,576 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 72,606,480 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance as a percentage of impaired loans/leases | 20.00%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 22.80%qcrh_AllowanceAsAPercentageOfLoansLeasesIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance as a percentage of nonimpaired loans/leases | 1.10%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 1.03%qcrh_AllowanceAsAPercentageOfLoansLeasesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Total allowance as a percentage of total loans/leaess | 1.45%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |  | 1.38%qcrh_TotalAllowanceAsAPercentageOfLoansLeases / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Provisions (credits) charged to expense | 10,667 us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | (935)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
Loans/leases charged off | (8,794)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | (2,755)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
Recoveries on loans/leases previously charged off | $ 39,025 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | $ 31,747 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  |
[1] | Management performs an evaluation of the estimated unguaranteed residual values of leased assets on an annual basis, at a minimum. The evaluation consists of discussions with reputable and current vendors and management's expertise and understanding of the current states of particular industries to determine informal valuations of the equipment. As necessary and where available, management will utilize valuations by independent appraisers. The large majority of leases with residual values contain a lease options rider which requires the lessee to pay the residual value directly, finance the payment of the residual value, or extend the lease term to pay the residual value. In these cases, the residual value is protected and the risk of loss is minimal. There were no losses related to residual values for the three months ended March 31, 2015 and 2014.
[2] | Includes residential real estate loans held for sale totaling $789,000 and $553,000 as of March 31, 2015, and December 31, 2014, respectively.

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