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Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
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

Name:	hbcp_TimeDeposits250000OrMore
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