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Investment Securities-Schedule of Unrealized Loss (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Mar. 31, 2023
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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 | $ 1 | $ 13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 258 | 4,075
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 15,313 | 12,203
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 47,385 | 49,471
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 15,314 | 12,216
Debt Securities, Available-for-sale, Unrealized Loss Position | 47,643 | 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 | 0 | 3
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 0 | 363
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 157 | 94
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 1,971 | 1,822
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss | 157 | 97
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value | 1,971 | 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 | 1 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 258 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 8,020 | 6,264
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 24,217 | 27,146
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 8,021 | 6,264
Debt Securities, Available-for-sale, Unrealized Loss Position | 24,475 | 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 | 0 | 3
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 0 | 363
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 157 | 94
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 1,971 | 1,822
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss | 157 | 97
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value | 1,971 | 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 | 25 | 25
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 7,462 | 5,251
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 25 | 38
Debt Securities, Available-for-sale, Unrealized Loss Position | 7,462 | 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 | 2,523 | 2,177
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 2,744 | 3,092
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 2,523 | 2,177
Debt Securities, Available-for-sale, Unrealized Loss Position | 2,744 | 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 | 4,745 | 3,737
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 12,962 | 13,982
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 4,745 | 3,737
Debt Securities, Available-for-sale, Unrealized Loss Position | $ 12,962 | $ 13,982

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