Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	$ 5,624	$ 5,140
Charge-offs	(13)	(55)
Recoveries	20	57
Provision for loan losses	(27)	72
Allowance for loan losses - Ending Balance	5,604	5,214
Allowance for Loan Losses, Collectively Evaluated for Impairment	5,489		$ 5,555
Allowance for Loan Losses, Individually Evaluated for Impairment	115		69
Loans, gross	555,397		579,504
Loans Receivable, Collectively Evaluated for Impairment	537,073		568,057
Loans Receivable, Individually Evaluated for Impairment	18,324		11,447
One-to-four family
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	731	1,058
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(82)	28
Allowance for loan losses - Ending Balance	649	1,086
Allowance for Loan Losses, Collectively Evaluated for Impairment	611		731
Allowance for Loan Losses, Individually Evaluated for Impairment	38		0
Loans, gross	68,294		70,261
Loans Receivable, Collectively Evaluated for Impairment	62,647		65,369
Loans Receivable, Individually Evaluated for Impairment	5,647		4,892
Multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	1,114	880
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(61)	(54)
Allowance for loan losses - Ending Balance	1,053	826
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,053		1,114
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Loans, gross	153,141		162,261
Loans Receivable, Collectively Evaluated for Impairment	153,032		161,746
Loans Receivable, Individually Evaluated for Impairment	109		515
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	1,157	907
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(49)	(37)
Allowance for loan losses - Ending Balance	1,108	870
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,108		1,157
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Loans, gross	174,102		175,313
Loans Receivable, Collectively Evaluated for Impairment	167,932		175,313
Loans Receivable, Individually Evaluated for Impairment	6,170		0
Business
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	2,497	1,855
Charge-offs	0	0
Recoveries	19	49
Provision for loan losses	(195)	200
Allowance for loan losses - Ending Balance	2,321	2,104
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,244		2,428
Allowance for Loan Losses, Individually Evaluated for Impairment	77		69
Loans, gross	158,327		170,031
Loans Receivable, Collectively Evaluated for Impairment	151,929		163,991
Loans Receivable, Individually Evaluated for Impairment	6,398		6,040
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	123	165
Charge-offs	(13)	(55)
Recoveries	1	8
Provision for loan losses	2	26
Allowance for loan losses - Ending Balance	113	144
Allowance for Loan Losses, Collectively Evaluated for Impairment	113		123
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Loans, gross	1,533		1,638
Loans Receivable, Collectively Evaluated for Impairment	1,533		1,638
Loans Receivable, Individually Evaluated for Impairment	0		0
Unallocated
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses - Beginning Balance	2	275
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	358	(91)
Allowance for loan losses - Ending Balance	360	$ 184
Allowance for Loan Losses, Collectively Evaluated for Impairment	360		2
Allowance for Loan Losses, Individually Evaluated for Impairment	0		0
Loans, gross	0		0
Loans Receivable, Collectively Evaluated for Impairment	0		0
Loans Receivable, Individually Evaluated for Impairment	$ 0		$ 0

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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

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

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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