Loans and Allowance for Credit Losses - Additional Information (Details) - USD ($)	9 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans receivable from related parties	$ 73,000		$ 76,000
Modifications on loans	0	$ 0
Federal Home Loan Mortgage Corp
Financing Receivable, Past Due [Line Items]
Loans receivable from related parties	$ 618,000		$ 679,000

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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

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