Loans and Allowance for Credit Losses - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
Dec. 31, 2024	Mar. 31, 2024
Financing Receivable, Past Due [Line Items]
Loans receivable from related parties	$ 1,800,000	$ 72,000
Loans excludes allowance for off-balance sheet	215,000	215,000
Federal Home Loan Mortgage Corp
Financing Receivable, Past Due [Line Items]
Loans receivable from related parties	$ 608,000	$ 578,000

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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- Definition

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. 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
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