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Summary of Significant Accounting Policies Text Tag (Details) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($)
Accounting Policies [Abstract] |  |
Number of Reportable Segments | 1 |
Property, Plant and Equipment [Line Items] |  |
Servicing fee income | $ 44 | $ 41
Mortgage Loans in Process of Foreclosure, Amount | 2,700 | $ 3,100
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | (1) |
Off-Balance-Sheet, Credit Loss, Liability | $ 9 |
Minimum | Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Useful Life | 10 years |
Minimum | Furnishings and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Maximum | Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Useful Life | 25 years |
Maximum | Furnishings and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Useful Life | 5 years |

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- Definition Amount of fee income including, but not limited to, managerial assistance, servicing of investment, and origination and commitment fees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 35 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-35 + Details
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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