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Deposits - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Banking and Thrift [Abstract] |  |
Aggregate amount of certificates of deposit | $ 74,813 | $ 54,924

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- Definition Time Deposits 250000 Or More + References No definition available. + Details
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Namespace Prefix: | hbcp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_BankingAndThriftAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration