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Loans and Allowance for Loan Losses (Detail Textuals) (USD $) | 12 Months Ended
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Dec. 31, 2014 Contract | Dec. 31, 2013 Contract
Financing Receivable, Impaired [Line Items] |  |
Carrying amount of loans pledged as collateral to the Federal Home Loan Bank | $ 411,800,000 us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt |
Fair value amount of loans pledged as collateral to the Federal Home Loan Bank | 405,500,000 us-gaap_PledgedAssetsSeparatelyReportedSecuritiesPledgedForFederalHomeLoanBankAtFairValue |
Impaired loans individually evaluated for impairment | 35,963,000 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment | 34,816,000 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Impaired loans were evaluated based on the fair value of the loan's collateral | 15,600,000 hwbk_ImpairedFinancingReceivableRecordedInvestmentEvaluatedForImpairmentBasedOnFairValueOfCollateral | 21,800,000 hwbk_ImpairedFinancingReceivableRecordedInvestmentEvaluatedForImpairmentBasedOnFairValueOfCollateral
Specific allowance related to impaired loans | 1,749,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance | 4,796,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 28,525,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment | 18,809,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Impaired Financing Receivable With No Related Allowance Recorded Investment Percentage | 79.00%hwbk_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentPercentage | 54.00%hwbk_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentPercentage
Contractual interest lost on nonaccrual loans | 1,100,000 us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans | 1,200,000 us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
Interest income on impaired loans continuing to accrue interest | 542,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod | 338,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Amount of specific reserves related to TDRs which were allocated to the allowance for loan losses | 1,000,000 us-gaap_AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment | 2,200,000 us-gaap_AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment
Troubled debt restructurings | 19,300,000 us-gaap_FinancingReceivableModificationsRecordedInvestment | 21,500,000 us-gaap_FinancingReceivableModificationsRecordedInvestment
Troubled debt restructurings, non-accrual status | 1,600,000 hwbk_FinancingReceivableModificationsRecordedInvestmentNonaccrualStatus | 10,100,000 hwbk_FinancingReceivableModificationsRecordedInvestmentNonaccrualStatus
Troubled debt restructurings, accrual status | 17,720,000 hwbk_FinancingReceivableModificationsRecordedInvestmentAccrualStatus | 11,395,000 hwbk_FinancingReceivableModificationsRecordedInvestmentAccrualStatus
Number of contracts modified | 4 us-gaap_FinancingReceivableModificationsNumberOfContracts2 | 4 us-gaap_FinancingReceivableModificationsNumberOfContracts2
Consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Non-accrual loans that were collectively evaluated for impairment |  | 259,000 hwbk_ImpairedFinancingReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember
Specific allowance related to impaired loans | 26,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember | 16,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 36,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember | 259,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember
Interest income on impaired loans continuing to accrue interest | $ 0 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember | $ 3,000 us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerLoanMember

X
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- Definition Represents the amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings and are on nonaccrual status as of the balance sheet date. + References No definition available. + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses that were collectively evaluated for impairment. + References No definition available. + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses that were evaluated for impairment based on the fair value of the collateral. + References No definition available. + Details
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- Definition Percentage of investment in impaired financing receivables for which there is no related allowance for credit losses. + References No definition available. + Details
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- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References No definition available. + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
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- Definition Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
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- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
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- Definition The fair value, as of the date of each statement of financial position presented, of securities which are owned but transferred to serve as collateral for the payment of the FHLB debt obligations, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 + Details
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- Definition The carrying amount, as of the date of the latest financial statement presented, of loans receivable which are owned but transferred to serve as collateral for the payment of FHLB debt obligations, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729 + Details
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