Loans Receivable - Schedule of Allowance for Loan and Lease Losses, Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 15,227
Ending balance	16,028
One-to-Four Family Residential
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,043	$ 3,214
Recoveries	1	2
Provision (recapture)	47	259
Ending balance	5,611	3,475
Total Loans		412,231
Loans collectively evaluated for impairment		410,136
Loans individually evaluated for impairment		2,095
One-to-Four Family Residential \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		3,457
One-to-Four Family Residential \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		18
One-to-Four Family Residential \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,520
Multifamily
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,210	1,279
Recoveries	0	0
Provision (recapture)	314	176
Ending balance	1,607	1,455
Total Loans		152,855
Loans collectively evaluated for impairment		151,195
Loans individually evaluated for impairment		1,660
Multifamily \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		1,455
Multifamily \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		0
Multifamily \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	83
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,397	6,615
Recoveries	0	0
Provision (recapture)	69	(300)
Ending balance	4,496	6,315
Total Loans		416,988
Loans collectively evaluated for impairment		376,815
Loans individually evaluated for impairment		40,173
Commercial real estate \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		6,315
Commercial real estate \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		0
Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(970)
Construction Land Development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,717	2,064
Recoveries	0	0
Provision (recapture)	(332)	(422)
Ending balance	1,793	1,642
Total Loans		74,697
Loans collectively evaluated for impairment		74,697
Loans individually evaluated for impairment		0
Construction Land Development \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		1,642
Construction Land Development \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		0
Construction Land Development \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	408
Business
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	948	1,112
Recoveries	0	0
Provision (recapture)	(25)	(331)
Ending balance	413	781
Total Loans		30,546
Loans collectively evaluated for impairment		30,546
Loans individually evaluated for impairment		0
Business \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		781
Business \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		0
Business \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(510)
Prior
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,912	1,373
Recoveries	0	0
Provision (recapture)	227	118
Ending balance	2,108	1,491
Total Loans		49,431
Loans collectively evaluated for impairment		49,431
Loans individually evaluated for impairment		0
Prior \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		1,491
Prior \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		0
Prior \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	(31)
Property total
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	15,227	15,657
Recoveries	1	2
Provision (recapture)	300	(500)
Ending balance	16,028	15,159
Total Loans		1,136,748
Loans collectively evaluated for impairment		1,092,820
Loans individually evaluated for impairment		43,928
Property total \| General Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		15,141
Property total \| Specific Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance		$ 18
Property total \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 500

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

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