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