Non-interest Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 731	$ 671	$ 2,184	$ 2,189
Revenue Not from Contract with Customer	1,804	321	2,569	611
Noninterest income	2,535	992	4,753	2,800
Depository fees and charges
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	543	561	1,678	1,669
Loan fees and service charges
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	97	68	270	316
Other noninterest income
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	$ 91	$ 42	$ 236	$ 204