Commitments and Contingencies-Repurchase Request (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2023 USD ($)
Repurchase request [Abstract]
Open claims, beginning balance	$ 1,363	[1]
Gross new demands received	0
Loan repurchased/made whole	0
Demands rescinded	0
Advances on open claims	0
Principal payments received on open claims	22
Open claims, ending balance	$ 1,385	[1]

[1] The open claims include all open requests received by the Bank where either FNMA has requested loan files for review, where FNMA has not formally rescinded the repurchase request or where the Bank has not agreed to repurchase the loan. The amounts reflected in this table are the unpaid principal balance and do not incorporate any losses the Bank would incur upon the repurchase of these loans.