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Summary of Significant Accounting Policies (Details)	Jul. 01, 2022
Subsequent Event
Dividends Payable [Line Items]
Special stock dividend, rate percent (in percent)	4.00%

X

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	hwbk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: