Commitments and Contingencies-Representation and Warranty Reserves (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2021 USD ($)
Representation and warranty reserve [Abstract]
Representation and warranty repurchase reserve, beginning of period	$ 226	[1]
Provision for mortgage representation and warranty losses	(45)	[2]
Representation and warranty repurchase reserve, end of period	$ 181	[1]

[1] (1) Reported in consolidated statements of financial condition as a component of other liabilities

[2] 2) Component of other non-interest expense.