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Earnings per Share (Parentheticals) (Details 2)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Common Stock, Dividend Rate, Percentage	4.00%	4.00%	4.00%

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- Definition

The percentage rate used to calculate dividend payments on common stock.

+ References

No definition available.

+ Details

Name:	hwbk_CommonStockDividendRatePercentage
Namespace Prefix:	hwbk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration