Loans - Summary of Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	$ 31,877	$ 32,468
Individually evaluated for impairment, Allowance for loan losses	1,265	448
Allowance for loan losses	33,142	32,916	$ 31,537	$ 29,299
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	33,502	35,168
Individually evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	1,265	448
Total allowance for credit losses	34,767	35,616
Collectively evaluated for impairment, Recorded investment in loans	2,737,817	2,713,213
Individually evaluated for impairment, Recorded investment in loans	6,206	4,972
Total	2,744,023	2,718,185
PCD Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment, Recorded investment in loans	1,200	1,300
Unfunded lending commitments
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	1,625	2,700
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	1,625	2,700	2,594	2,093
Unfunded lending commitments \| Originated loans:
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	1,600	2,700
Allowance for loan losses	509,300	516,800
One- to four-family first mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	4,651	4,430
Individually evaluated for impairment, Allowance for loan losses	411	0
Allowance for loan losses	5,062	4,430	3,255	2,883
Collectively evaluated for impairment, Recorded investment in loans	491,142	501,225
Individually evaluated for impairment, Recorded investment in loans	2,304	0
Total	493,446	501,225
Home equity loans and lines
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	1,335	801
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	1,335	801	688	624
Collectively evaluated for impairment, Recorded investment in loans	92,574	79,097
Individually evaluated for impairment, Recorded investment in loans	0	0
Total	92,574	79,097
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	14,141	13,321
Individually evaluated for impairment, Allowance for loan losses	362	200
Allowance for loan losses	14,503	13,521	14,805	13,814
Collectively evaluated for impairment, Recorded investment in loans	1,188,226	1,154,063
Individually evaluated for impairment, Recorded investment in loans	2,162	4,718
Total	1,190,388	1,158,781
Construction and land
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	2,813	5,484
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	2,813	5,484	5,415	4,680
Collectively evaluated for impairment, Recorded investment in loans	328,707	352,263
Individually evaluated for impairment, Recorded investment in loans	520	0
Total	329,227	352,263
Multi-family residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	1,363	1,090
Individually evaluated for impairment, Allowance for loan losses	136	0
Allowance for loan losses	1,499	1,090	474	572
Collectively evaluated for impairment, Recorded investment in loans	177,222	178,568
Individually evaluated for impairment, Recorded investment in loans	603	0
Total	177,825	178,568
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	6,782	6,613
Individually evaluated for impairment, Allowance for loan losses	356	248
Allowance for loan losses	7,138	6,861	6,166	6,024
Collectively evaluated for impairment, Recorded investment in loans	429,900	418,373
Individually evaluated for impairment, Recorded investment in loans	617	254
Total	430,517	418,627
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively evaluated for impairment, including unfunded lending commitments, total allowance for credit losses	792	729
Individually evaluated for impairment, Allowance for loan losses	0	0
Allowance for loan losses	792	729	$ 734	$ 702
Collectively evaluated for impairment, Recorded investment in loans	30,046	29,624
Individually evaluated for impairment, Recorded investment in loans	0	0
Total	$ 30,046	$ 29,624

Financing Receivable, Allowance for Credit Loss, Including Lending Commitments

No definition available.

Name:	hbcp_FinancingReceivableAllowanceForCreditLossIncludingLendingCommitments
Namespace Prefix:	hbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment, Including Unfunded Lending Commitments

+ References

No definition available.

+ Details

Name:	hbcp_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentIncludingUnfundedLendingCommitments
Namespace Prefix:	hbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment, Including Unfunded Lending Commitments

+ References

No definition available.

+ Details

Name:	hbcp_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairmentIncludingUnfundedLendingCommitments
Namespace Prefix:	hbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479391/326-20-30-2

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of financing receivable collectively evaluated for credit loss. Excludes financing receivable individually evaluated for credit loss.

+ References

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

+ Details

Name:	us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetOriginatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=hbcp_OneToFourFamilyFirstMortgagePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=hbcp_ConstructionAndLandPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=hbcp_MultiFamilyResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=hbcp_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: