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Acquisition Activity - Summary of the Accretable Yield on the Loans Acquired with Deteriorated Credit Quality (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Changes in accretable yield |  |  |
Balance, beginning of period | $ (9,147) | $ (9,303) | $ (11,091)
Acquisition accretable yield | 0 | 0 | (1,981)
Accretion | 2,202 | 2,425 | 5,109
Net transfers from nonaccretable discount to accretable yield | (428) | (2,269) | (1,340)
Balance, end of period | $ (7,373) | $ (9,147) | $ (9,303)

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- Definition Accretable Yield on Acquird Loans + References No definition available. + Details
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- Definition Accretable yield on acquired loans. + References No definition available. + Details
Name: | hbcp_AccretableYieldOnAcquiredLoans
Namespace Prefix: | hbcp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Accretable yield on acquired loans accretion. + References No definition available. + Details
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Balance Type: | debit
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- Definition Accretable yield on acquired loans additions. + References No definition available. + Details
Name: | hbcp_AccretableYieldOnAcquiredLoansAdditions
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Accretable yield on acquired loans reclassifications to nonaccretable difference. + References No definition available. + Details
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Balance Type: | credit
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