Investment Securities-Schedule of Unrealized Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
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	$ (16)	$ (2)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	3,493	1,273
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12,985)	(12,707)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	40,413	46,508
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(13,001)	(12,709)
Debt Securities, Available-for-sale, Unrealized Loss Position	43,906	47,781
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(72)	(103)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,705	1,872
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(72)	(103)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,705	1,872
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	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	(6,723)	(6,841)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	22,782	24,468
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(6,723)	(6,841)
Debt Securities, Available-for-sale, Unrealized Loss Position	22,782	24,468
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(72)	(103)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,705	1,872
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(72)	(103)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,705	1,872
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	(16)	(2)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	3,493	1,273
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6)	(23)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	945	4,921
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(22)	(25)
Debt Securities, Available-for-sale, Unrealized Loss Position	4,438	6,194
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	(2,446)	(2,203)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,817	3,063
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,446)	(2,203)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,817	3,063
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	(3,810)	(3,640)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,869	14,056
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(3,810)	(3,640)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 13,869	$ 14,056

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