Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021
Financial Assets:
Held-to-maturity, Fair Value	$ 5,592	$ 8,140
Fair Value, Inputs, Level 1
Financial Assets:
Cash and cash equivalents	65,729	75,591
Securities Available-for-Sale	0	0
Held-to-maturity, Fair Value	0	0
Loans Receivable	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	0	0
Financial Liabilities:
Deposits	462,897	402,843
Other borrowed money	0	0
Accrued interest payable	0	0
Fair Value, Inputs, Level 2
Financial Assets:
Cash and cash equivalents	0	0
Securities Available-for-Sale	75,268	86,507
Held-to-maturity, Fair Value	5,592	8,140
Loans Receivable	0	0
Accrued interest receivable	2,688	2,640
Mortgage servicing rights	0	0
Financial Liabilities:
Deposits	157,565	154,206
Other borrowed money	15,685	37,150
Accrued interest payable	44	3,212
Fair Value, Inputs, Level 3
Financial Assets:
Cash and cash equivalents	0	0
Securities Available-for-Sale	0	0
Held-to-maturity, Fair Value	0	0
Loans Receivable	557,329	487,806
Accrued interest receivable	0	0
Mortgage servicing rights	132	147
Financial Liabilities:
Deposits	0	0
Other borrowed money	0	0
Accrued interest payable	0	0
Reported Value Measurement
Financial Assets:
Cash and cash equivalents	65,729	75,591
Securities Available-for-Sale	75,268	86,507
Held-to-maturity, Fair Value	5,407	7,807
Loans Receivable	547,389	478,409
Accrued interest receivable	2,688	2,640
Mortgage servicing rights	132	147
Financial Liabilities:
Deposits	622,106	556,559
Other borrowed money	16,298	37,108
Accrued interest payable	44	3,212
Estimate of Fair Value Measurement
Financial Assets:
Cash and cash equivalents	65,729	75,591
Securities Available-for-Sale	75,268	86,507
Held-to-maturity, Fair Value	5,592	8,140
Loans Receivable	557,329	487,806
Accrued interest receivable	2,688	2,640
Mortgage servicing rights	132	147
Financial Liabilities:
Deposits	620,462	557,049
Other borrowed money	15,685	37,150
Accrued interest payable	$ 44	$ 3,212