Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Financial Assets:
Held-to-maturity, Fair Value	$ 2,282	$ 5,276
Fair Value, Inputs, Level 1
Financial Assets:
Cash and cash equivalents	43,912	61,018
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	455,166	485,884
Advances from FHLB of New York	0
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	53,443	67,596
Held-to-maturity, Fair Value	2,282	5,276
Loans Receivable	0	0
Accrued interest receivable	2,513	2,414
Mortgage servicing rights	0	0
Financial Liabilities:
Deposits	149,250	138,276
Advances from FHLB of New York	15,000
Other borrowed money	14,565	15,673
Accrued interest payable	152	91
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	546,749	563,821
Accrued interest receivable	0	0
Mortgage servicing rights	145	162
Financial Liabilities:
Deposits	0	0
Advances from FHLB of New York	0
Other borrowed money	0	0
Accrued interest payable	0	0
Reported Value Measurement
Financial Assets:
Cash and cash equivalents	43,912	61,018
Securities Available-for-Sale	53,443	67,596
Held-to-maturity, Fair Value	2,406	5,254
Loans Receivable	581,595	573,880
Accrued interest receivable	2,513	2,414
Financial Liabilities:
Deposits	609,247	628,117
Advances from FHLB of New York	15,000
Other borrowed money	15,903	15,906
Accrued interest payable	152	91
Estimate of Fair Value Measurement
Financial Assets:
Cash and cash equivalents	43,912	61,018
Securities Available-for-Sale	53,443	67,596
Held-to-maturity, Fair Value	2,282	5,276
Loans Receivable	546,749	563,821
Accrued interest receivable	2,513	2,414
Mortgage servicing rights	145	162
Financial Liabilities:
Deposits	604,416	624,160
Advances from FHLB of New York	15,000
Other borrowed money	14,565	15,673
Accrued interest payable	$ 152	$ 91