Other Non-interest Revenue and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Noninterest Income, Other [Abstract]
Correspondent banking fees	$ 143	$ 624	$ 143	$ 1,489
Other	103	19	138	90
Total non-interest income	246	643	281	1,579
Non-interest expense:
Advertising	111	180	264	279
Legal expense	112	248	183	327
Insurance and surety	289	179	585	378
Audit expense	148	137	299	248
Data lines / internet	99	104	194	213
Security services	75	59	149	107
Retail expenses	250	245	467	488
Loss contingency	23	(101)	34	2,016
Director's fees	123	71	246	142
Other	612	592	1,179	1,176
Total non-interest expense	$ 1,842	$ 1,714	$ 3,600	$ 5,374