Summary of Significant Accounting Policies Text Tag (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Accounting Policies [Abstract]
Other than Temporary Impairment Losses, Investments	$ 0
Number of Reportable Segments	1
Property, Plant and Equipment [Line Items]
Servicing fee income	$ 44	$ 41
Mortgage Loans in Process of Foreclosure, Amount	$ 3,200	$ 3,100
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