Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Financial Assets
Available-for-sale Securities	$ 65,829	$ 79,845
Debt Securities, Held-to-maturity, Fair Value	10,564	11,107
Fair Value, Inputs, Level 1
Financial Assets
Cash and cash equivalents	47,540	31,228
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	0
Financial Liabilities
Deposits	291,951	277,360
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
Available-for-sale Securities	65,829	79,845
Debt Securities, Held-to-maturity, Fair Value	10,564	11,107
Loans receivable	0	0
Accrued interest receivable	2,052	2,019
Mortgage servicing rights	0	0
Other assets - Interest-bearing deposits	981	976
Financial Liabilities
Deposits	197,358	200,143
Advances from FHLB of New York		8,001
Other borrowed money	13,386	12,393
Accrued interest payable	2,695	1,931
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	438,017	424,013
Accrued interest receivable	0	0
Mortgage servicing rights	145	180
Other assets - Interest-bearing deposits	0	0
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	47,540	31,228
Available-for-sale Securities	65,829	79,845
Debt Securities, Held-to-maturity, Fair Value	10,151	11,137
Loans receivable	423,786	424,182
Accrued interest receivable	2,052	2,019
Mortgage servicing rights	145	180
Other assets - Interest-bearing deposits	981	976
Financial Liabilities
Deposits	488,815	480,196
Advances from FHLB of New York		8,000
Other borrowed money	13,403	13,403
Accrued interest payable	2,695	1,931
Estimate of Fair Value Measurement
Financial Assets
Cash and cash equivalents	47,540	31,228
Available-for-sale Securities	65,829	79,845
Debt Securities, Held-to-maturity, Fair Value	10,564	11,107
Loans receivable	438,017	424,013
Accrued interest receivable	2,052	2,019
Mortgage servicing rights	145	180
Other assets - Interest-bearing deposits	981	976
Financial Liabilities
Deposits	489,309	477,503
Advances from FHLB of New York		8,001
Other borrowed money	13,386	12,393
Accrued interest payable	$ 2,695	$ 1,931