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Investment Securities-Schedule of Unrealized Loss (Details) - USD ($) $ in Thousands	Sep. 30, 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	$ 0	$ (2)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	1,273
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(10,854)	(12,707)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	43,618	46,508
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(10,854)	(12,709)
Debt Securities, Available-for-sale, Unrealized Loss Position	43,618	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	(47)	(103)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,786	1,872
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(47)	(103)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,786	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	(5,763)	(6,841)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	24,274	24,468
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(5,763)	(6,841)
Debt Securities, Available-for-sale, Unrealized Loss Position	24,274	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	(47)	(103)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,786	1,872
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(47)	(103)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,786	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	0	(2)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	1,273
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9)	(23)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,478	4,921
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(9)	(25)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,478	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	(2,084)	(2,203)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	3,180	3,063
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,084)	(2,203)
Debt Securities, Available-for-sale, Unrealized Loss Position	3,180	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	(2,998)	(3,640)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	14,686	14,056
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,998)	(3,640)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 14,686	$ 14,056

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