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Borrowings (Detail Textuals) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Short-term Debt [Line Items] |  |
Long-term Federal Home Loan Bank Advances | $ 43,000,000 us-gaap_FederalHomeLoanBankAdvancesLongTerm | $ 24,000,000 us-gaap_FederalHomeLoanBankAdvancesLongTerm
Bank |  |
Short-term Debt [Line Items] |  |
Long-term Federal Home Loan Bank Advances | 43,000,000 us-gaap_FederalHomeLoanBankAdvancesLongTerm / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 24,000,000 us-gaap_FederalHomeLoanBankAdvancesLongTerm / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Federal funds purchased | Bank |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity of federal funds on unsecured basis | 40,000,000 hwbk_FederalFundsMaximumBorrowingCapacityUnsecuredBasis / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_ShortTermDebtTypeAxis = us-gaap_FederalFundsPurchasedMember |
Maximum borrowing capacity of federal funds on secured basis | 7,800,000 hwbk_FederalFundsMaximumBorrowingCapacitySecuredBasis / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_ShortTermDebtTypeAxis = us-gaap_FederalFundsPurchasedMember |
Amount of FHLB advances which may be called early | 10,000,000 hwbk_FederalHomeLoanBankAdvancesAmountWhichMayBeCalledEarly / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_ShortTermDebtTypeAxis = us-gaap_FederalFundsPurchasedMember |
Maximum additional borrowing amount under agreement with FHLB | $ 230,600,000 hwbk_FederalHomeLoanBankMaximumAdditionalBorrowingAmountUnderAgreement / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_ShortTermDebtTypeAxis = us-gaap_FederalFundsPurchasedMember |

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- Definition Represents the maximum borrowing capacity on a secured basis under agreements with unaffiliated banks. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Represents the maximum borrowing capacity on an unsecured basis under agreements with unaffiliated banks. + References No definition available. + Details
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- Definition The amount of federal home loan bank advances which may be called early for payment within the next year by the FHLB. + References No definition available. + Details
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Namespace Prefix: | hwbk_
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Period Type: | instant

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- Definition Represents the maximum additional borrowing capacity under the agreement with the FHLB. + References No definition available. + Details
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Namespace Prefix: | hwbk_
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- Definition Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64702-112823 + Details
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