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Borrowings (Detail Textuals 1) (USD $)
 12 Months Ended 1 Months Ended
Dec. 31, 2014
Mar. 17, 2005
Mar. 17, 2004
Dec. 31, 2013
Borrowings        
Investment in common interests of the trust during the period $ 712,000hwbk_InvestmentDuringPeriodInCommonSecuritiesOfTrusts      
Investment in preferred interests of the trust by a third party during the period 23,000,000hwbk_InvestmentDuringPeriodInPreferredSecuritiesOfTrustsPurchasedByThirdParty      
Subordinated notes 49,486,000us-gaap_JuniorSubordinatedNotes     49,486,000us-gaap_JuniorSubordinatedNotes
Investment in common securities of the trust 1,500,000hwbk_InvestmentInCommonSecuritiesOfTrusts      
Exchange Statutory Trust II        
Borrowings        
Trust preferred securities issued   23,000,000hwbk_TrustPreferredSecuritiesIssued
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustTwoMember		    
Term   30 years    
Description of variable rate three-month LIBOR      
Basis spread on variable rate (as a percent) 1.83%hwbk_TrustPreferredSecurityBasisSpreadOnVariableRate
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustTwoMember		      
Interest rate at end of period (as a percent) 2.70%hwbk_TrustPreferredSecurityInterestRateAtPeriodEnd
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustTwoMember		      
Period of time after issuance in which TPS can be repaid without penalty 5 years      
Exchange Statutory Trust I        
Borrowings        
Trust preferred securities issued     $ 25,000,000hwbk_TrustPreferredSecuritiesIssued
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustOneMember		  
Description of variable rate three-month LIBOR      
Basis spread on variable rate (as a percent) 2.70%hwbk_TrustPreferredSecurityBasisSpreadOnVariableRate
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustOneMember		      
Interest rate at end of period (as a percent) 2.94%hwbk_TrustPreferredSecurityInterestRateAtPeriodEnd
/ dei_LegalEntityAxis
= hwbk_ExchangeStatutoryTrustOneMember