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Employee Benefit Plans (Detail Textuals) - Pension - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 15, 2017 | Jun. 30, 2017
Defined Benefit Plan Disclosure |  |
Employer match (as a percent) |  | 3.00%
Defined benefit plan contributions by employer percent |  | 6.00%
Defined benefit plan, minimum required contribution |  | $ 842,000
Subsequent event |  |
Defined Benefit Plan Disclosure |  |
Contribution to the defined benefit plan for the current plan year | $ 1,200 |

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- Definition Represents Defined Benefit Plan Contributions Minimum Required Contribution. + References No definition available. + Details
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Namespace Prefix: | hwbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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
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Data Type: | xbrli:stringItemType
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |