Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Financial Assets
Available-for-sale Securities	$ 86,507	$ 65,829
Debt Securities, Held-to-maturity, Fair Value	8,140	10,564
Fair Value, Inputs, Level 1
Financial Assets
Cash and cash equivalents	75,591	47,540
Available-for-sale Securities	0	0
Debt Securities, Held-to-maturity, Fair Value	0	0
Loans receivable	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	0	0
Other assets - Interest-bearing deposits		0
Financial Liabilities
Deposits	402,843	291,951
Other borrowed money	0	0
Accrued interest payable	0	0
Fair Value, Inputs, Level 2
Financial Assets
Cash and cash equivalents	0	0
Available-for-sale Securities	86,507	65,829
Debt Securities, Held-to-maturity, Fair Value	8,140	10,564
Loans receivable	0	0
Accrued interest receivable	2,640	2,052
Mortgage servicing rights	0	0
Other assets - Interest-bearing deposits		981
Financial Liabilities
Deposits	154,206	197,358
Other borrowed money	37,150	13,386
Accrued interest payable	3,212	2,695
Fair Value, Inputs, Level 3
Financial Assets
Cash and cash equivalents	0	0
Available-for-sale Securities	0	0
Debt Securities, Held-to-maturity, Fair Value	0	0
Loans receivable	487,806	438,017
Accrued interest receivable	0	0
Mortgage servicing rights	147	145
Other assets - Interest-bearing deposits		0
Financial Liabilities
Deposits	0	0
Other borrowed money	0	0
Accrued interest payable	0	0
Reported Value Measurement
Financial Assets
Cash and cash equivalents	75,591	47,540
Available-for-sale Securities	86,507	65,829
Debt Securities, Held-to-maturity, Fair Value	7,807	10,151
Loans receivable	478,409	423,786
Accrued interest receivable	2,640	2,052
Mortgage servicing rights	147	145
Other assets - Interest-bearing deposits		981
Financial Liabilities
Deposits	556,559	488,815
Other borrowed money	37,108	13,403
Accrued interest payable	3,212	2,695
Estimate of Fair Value Measurement
Financial Assets
Cash and cash equivalents	75,591	47,540
Available-for-sale Securities	86,507	65,829
Debt Securities, Held-to-maturity, Fair Value	8,140	10,564
Loans receivable	487,806	438,017
Accrued interest receivable	2,640	2,052
Mortgage servicing rights	147	145
Other assets - Interest-bearing deposits		981
Financial Liabilities
Deposits	557,049	489,309
Other borrowed money	37,150	13,386
Accrued interest payable	$ 3,212	$ 2,695