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Employee Benefit Plans (Parentheticals) (Details 5)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Percentage of securities comprising of low-cost equity index funds not actively managed that track the MSCI EAFE	31.00%	31.00%

X

- Definition

Represents the percentage of securities comprising of low-cost equity index funds not actively managed that tracks the specified index.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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