XML 70 R53.htm IDEA: XBRL DOCUMENT
v3.20.1

Acquisition Activity - Additional Information (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2019
Business Combinations [Abstract] |
Weighted average remaining contractual life | 5 years 6 months

X
- Definition Weighted average remaining contractual life of loan portfolio acquired with deteriorated credit quality. + References No definition available. + Details
Name: | hbcp_WeightedAverageRemainingContractualLifeOfLoanPortfolioAcquiredWithDeterioratedCreditQuality
Namespace Prefix: | hbcp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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