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Fair Value Measurements (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Gains included in earnings attributable to change in unrealized gains or losses	$ 372,000	$ 66,000
Impaired loans with a specific allowance	5,700,000	7,400,000
Specific allowance related to impaired loans	1,500,000	1,700,000
Impaired financing receivable charge offs	$ 1,900,000	$ 5,400,000

X

- Definition

Represents fair value measurement with unobservable inputs reconciliation recurring basis asset gain loss included in earnings attributable to change in unrealized gains.

+ References

No definition available.

+ Details

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Namespace Prefix:	hwbk_
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Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the amount related to charge off of impaired financing receivable during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	hwbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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X

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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