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Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | $ 5,858 | $ 5,604 | $ 5,229 | $ 5,624 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 6,007 |  | 6,007 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 22 |  | 117 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 3 |  | 53 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 168 |  | 174 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 6,007 |  | 6,007 |  |  |
Charge-offs |  |  | (11) |  | (24) |  |
Recoveries |  |  | 105 |  | 125 |  |
Provision for loan losses |  |  | (189) |  | (216) |  |
Allowance for loan losses - Ending Balance |  |  | 5,509 |  | 5,509 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 5,974 |  | 5,974 |  | $ 4,918 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 33 |  | 33 |  | 311 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 611,102 |  | 611,102 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 593,533 |  | 593,533 |  | 579,708 |
Loans Receivable, Individually Evaluated for Impairment |  | 17,569 |  | 17,569 |  | 18,188 |
Loans and Leases Receivable, Net of Deferred Income |  | 611,102 |  | 611,102 |  | 597,896 |
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 668 |  | 668 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 668 |  | 668 |  |  |
One-to-four family |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 2,063 | 649 | 716 | 731 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 2,264 |  | 2,264 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 201 |  | 328 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 2,264 |  | 2,264 |  |  |
Charge-offs |  |  | 0 |  | 0 |  |
Recoveries |  |  | 90 |  | 90 |  |
Provision for loan losses |  |  | (35) |  | (117) |  |
Allowance for loan losses - Ending Balance |  |  | 704 |  | 704 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 2,241 |  | 2,241 |  | 607 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 23 |  | 23 |  | 109 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 85,081 |  | 85,081 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 80,791 |  | 80,791 |  | 60,805 |
Loans Receivable, Individually Evaluated for Impairment |  | 4,290 |  | 4,290 |  | 5,003 |
Loans and Leases Receivable, Net of Deferred Income |  | 85,081 |  | 85,081 |  | 65,808 |
One-to-four family | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 1,220 |  | 1,220 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 1,220 |  | 1,220 |  |  |
Multifamily |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 713 | 1,053 | 1,109 | 1,114 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 721 |  | 721 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 8 |  | 4 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 721 |  | 721 |  |  |
Charge-offs |  |  | 0 |  | 0 |  |
Recoveries |  |  | 0 |  | 0 |  |
Provision for loan losses |  |  | 2 |  | (59) |  |
Allowance for loan losses - Ending Balance |  |  | 1,055 |  | 1,055 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 721 |  | 721 |  | 1,109 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 179,039 |  | 179,039 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 176,439 |  | 176,439 |  | 179,046 |
Loans Receivable, Individually Evaluated for Impairment |  | 2,600 |  | 2,600 |  | 71 |
Loans and Leases Receivable, Net of Deferred Income |  | 179,039 |  | 179,039 |  | 179,117 |
Multifamily | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | (392) |  | (392) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | (392) |  | (392) |  |  |
Commercial real estate |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 1,264 | 1,108 | 1,814 | 1,157 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 1,212 |  | 1,212 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | (52) |  | (105) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 1,212 |  | 1,212 |  |  |
Charge-offs |  |  | 0 |  | 0 |  |
Recoveries |  |  | 10 |  | 10 |  |
Provision for loan losses |  |  | 490 |  | 441 |  |
Allowance for loan losses - Ending Balance |  |  | 1,608 |  | 1,608 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 1,212 |  | 1,212 |  | 1,814 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 171,112 |  | 171,112 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 166,590 |  | 166,590 |  | 171,234 |
Loans Receivable, Individually Evaluated for Impairment |  | 4,522 |  | 4,522 |  | 7,190 |
Loans and Leases Receivable, Net of Deferred Income |  | 171,112 |  | 171,112 |  | 178,424 |
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | (497) |  | (497) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | (497) |  | (497) |  |  |
Construction |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 491 |  | 491 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 491 |  | 491 |  |  |
Loans Receivable, Individually Evaluated for Impairment |  | 0 |  | 0 |  |  |
Business |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 1,404 | 2,321 | 1,139 | 2,497 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 1,393 |  | 1,393 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 1 |  | 50 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | (12) |  | (301) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 1,393 |  | 1,393 |  |  |
Charge-offs |  |  | 0 |  | 0 |  |
Recoveries |  |  | 4 |  | 23 |  |
Provision for loan losses |  |  | (511) |  | (706) |  |
Allowance for loan losses - Ending Balance |  |  | 1,814 |  | 1,814 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 1,383 |  | 1,383 |  | 937 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 10 |  | 10 |  | 202 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1] | 162,460 |  | 162,460 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 156,307 |  | 156,307 |  | 160,985 |
Loans Receivable, Individually Evaluated for Impairment |  | 6,153 |  | 6,153 |  | 5,923 |
Loans and Leases Receivable, Net of Deferred Income |  | 162,460 |  | 162,460 |  | 166,908 | [1]
Business | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 505 |  | 505 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 505 |  | 505 |  |  |
Consumer |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 414 | 113 | 449 | 123 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 417 |  | 417 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 22 |  | 117 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 2 |  | 3 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 23 |  | 248 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 417 |  | 417 |  |  |
Charge-offs |  |  | (11) |  | (24) |  |
Recoveries |  |  | 1 |  | 2 |  |
Provision for loan losses |  |  | (21) |  | (19) |  |
Allowance for loan losses - Ending Balance |  |  | 82 |  | 82 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 417 |  | 417 |  | 449 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2] | 12,919 |  | 12,919 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 12,915 |  | 12,915 |  | 7,638 |
Loans Receivable, Individually Evaluated for Impairment |  | 4 |  | 4 |  | 1 |
Loans and Leases Receivable, Net of Deferred Income |  | 12,919 |  | 12,919 |  | 7,639 | [2]
Consumer | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | (166) |  | (166) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | (166) |  | (166) |  |  |
Unallocated |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for loan losses - Beginning Balance |  | 0 | 360 | 2 | 2 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  |  |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) |  | 0 |  | 0 |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | 0 |  | 0 |  |  |
Charge-offs |  |  | 0 |  | 0 |  |
Recoveries |  |  | 0 |  | 0 |  |
Provision for loan losses |  |  | (114) |  | 244 |  |
Allowance for loan losses - Ending Balance |  |  | $ 246 |  | $ 246 |  |
Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 0 |  | 0 |  | 2 |
Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 |  | 0 |  |  |
Loans Receivable, Collectively Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Loans Receivable, Individually Evaluated for Impairment |  | 0 |  | 0 |  | 0 |
Loans and Leases Receivable, Net of Deferred Income |  |  |  |  |  | $ 0 |
Unallocated | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | (2) |  | (2) |  |  |
Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance |  | $ (2) |  | $ (2) |  |  |
[1] | (1) Includes PPP loans and business overdrafts
[2] | 2) Includes personal loans and consumer overdrafts

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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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 -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 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- 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/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C + Details
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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 -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 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C Reference 2: 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 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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