Other Non-interest Revenue and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Noninterest Income, Other [Abstract]
Depository fees and charges	$ 0	$ 115	$ 208	$ 194
Other	37	82	186	272
Total non-interest income	37	197	394	466
Non-interest expense:
Advertising	32	66	234	242
Legal expense	316	95	489	338
Insurance and surety	158	146	463	514
Audit expense	136	125	398	456
Outsourced service	33	143	277	451
Data lines / internet	105	139	315	311
Retail expenses	175	195	551	609
Regulatory assessment	53	86	161	259
Investor relations	0	75	16	112
Director's fees	77	86	232	259
Other	528	504	1,447	1,666
Total non-interest expense	$ 1,613	$ 1,660	$ 4,583	$ 5,217