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Real Estate and Other Assets Acquired in Settlement of Loans (Detail Textuals) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Other Real Estate [Abstract] |  |
Net charge-offs against allowance for loan losses | $ 335,000 hwbk_NetChargeOffsAllowanceForLoanLosses | $ 800,000 hwbk_NetChargeOffsAllowanceForLoanLosses

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- Definition Represents the amount of net charge offs against valuation allowance for loan losses at the time of foreclosure. + References No definition available. + Details
Name: | hwbk_NetChargeOffsAllowanceForLoanLosses
Namespace Prefix: | hwbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_OtherRealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration