Investment Securities-Schedule of Unrealized Loss (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 3	$ 13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	270	4,075
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	13,005	12,203
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	51,922	49,471
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	13,008	12,216
Debt Securities, Available-for-sale, Unrealized Loss Position	52,192	53,546
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	9	3
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	338	363
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	121	94
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,734	1,822
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	130	97
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	2,072	2,185
Mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	3	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	270	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	6,870	6,264
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	25,964	27,146
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	6,873	6,264
Debt Securities, Available-for-sale, Unrealized Loss Position	26,234	27,146
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	9	3
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	338	363
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	121	94
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,734	1,822
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	130	97
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	2,072	2,185
US Government Agency Securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	4,075
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	30	25
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	9,082	5,251
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	30	38
Debt Securities, Available-for-sale, Unrealized Loss Position	9,082	9,326
Corporate Bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	2,182	2,177
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	3,086	3,092
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	2,182	2,177
Debt Securities, Available-for-sale, Unrealized Loss Position	3,086	3,092
Municipal Securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,923	3,737
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,790	13,982
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	3,923	3,737
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 13,790	$ 13,982