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Stock Compensation (Detail Textuals) (USD $)
0 Months Ended 12 Months Ended
Jul. 01, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Grant of options to purchase (in shares)   569,392us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized    
Stock dividend (in percent) 4.00%hwbk_CommonStockDividendsPercentage      
Stock based compensation expense   $ 20,000us-gaap_AllocatedShareBasedCompensationExpense $ 19,000us-gaap_AllocatedShareBasedCompensationExpense $ 29,000us-gaap_AllocatedShareBasedCompensationExpense
Total unrecognized compensation expense related to non-vested stock awards   $ 31,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions    
Weighted average period is expected to be recognized   1 year 3 months 18 days    
Weighted average remaining contractual life for options outstanding   1 year 10 months 24 days 2 years 6 months  
Weighted average remaining contractual life for options exercisable   1 year 8 months 12 days 2 years 3 months 18 days