Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Financial Assets:
Held-to-maturity, Fair Value	$ 1,984	$ 2,221
Fair Value, Inputs, Level 1
Financial Assets:
Cash and cash equivalents	75,230	42,552
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	429,265	418,432
Advances from FHLB of New York	0	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	49,106	53,843
Held-to-maturity, Fair Value	1,984	2,221
Loans Receivable	0	0
Accrued interest receivable	2,414	1,911
Mortgage servicing rights	0	0
Financial Liabilities:
Deposits	230,124	176,304
Advances from FHLB of New York	28,054	35,238
Other borrowed money	17,639	14,575
Accrued interest payable	1,119	380
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	593,659	567,029
Accrued interest receivable	0	0
Mortgage servicing rights	142	152
Financial Liabilities:
Deposits	0	0
Advances from FHLB of New York	0	0
Other borrowed money	0	0
Accrued interest payable	0	0
Reported Value Measurement
Financial Assets:
Cash and cash equivalents	75,230	42,552
Securities Available-for-Sale	49,106	53,843
Held-to-maturity, Fair Value	2,078	2,318
Loans Receivable	618,754	592,667
Accrued interest receivable	2,414	1,911
Financial Liabilities:
Deposits	662,817	600,429
Advances from FHLB of New York	28,027	35,000
Other borrowed money	18,403	15,903
Accrued interest payable	1,119	380
Estimate of Fair Value Measurement
Financial Assets:
Cash and cash equivalents	75,230	42,552
Securities Available-for-Sale	49,106	53,843
Held-to-maturity, Fair Value	1,984	2,221
Loans Receivable	593,659	567,029
Accrued interest receivable	2,414	1,911
Mortgage servicing rights	142	152
Financial Liabilities:
Deposits	659,389	594,736
Advances from FHLB of New York	28,054	35,238
Other borrowed money	17,639	14,575
Accrued interest payable	$ 1,119	$ 380