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Loans Receivable and ACL (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 605,258 | $ 613,684 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | 6,321 | 6,337 | $ 5,955 | $ 5,871
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss |  | $ 598,937 | $ 607,347 |  |
Percentage of Loan Type |  | 100.00% | 100.00% |  |
One-to-four family |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 71,956 | $ 74,387 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 1,538 | $ 1,799 | 2,050 | 2,005
Percentage of Loan Type |  | 11.90% | 12.10% |  |
Multifamily |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 164,696 | $ 165,812 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 1,339 | $ 820 | 762 | 720
Percentage of Loan Type |  | 27.20% | 27.00% |  |
Commercial real estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 171,693 | $ 178,257 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 922 | $ 1,465 | 1,234 | 1,222
Percentage of Loan Type |  | 28.40% | 29.10% |  |
Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 4,640 | $ 4,567 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 1 | $ 3 | 3 | 1
Percentage of Loan Type |  | 0.70% | 0.70% |  |
Business |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [1] | $ 165,280 | $ 164,964 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 1,774 | $ 1,646 | 1,295 | 1,415
Percentage of Loan Type | [1] | 27.30% | 26.90% |  |
Consumer |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | [2] | $ 26,993 | $ 25,697 |  |
Allowance for Credit Loss, Excluding Accrued Interest |  | $ 734 | $ 593 | $ 553 | $ 450
Percentage of Loan Type | [2] | 4.50% | 4.20% |  |
[1] | (1) Includes PPP loans and business overdrafts
[2] | 2) Includes personal loans and consumer overdrafts

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