Investment Securities-Schedule of Unrealized Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
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	$ 1,237	$ 3,217
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	39,836	60,110
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	597	113
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	33,883	18,631
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	1,834	3,330
Debt Securities, Available-for-sale, Unrealized Loss Position	73,719	78,741
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	531	1,271
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	20,208	39,020
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	536	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	16,479	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	1,067	1,271
Debt Securities, Available-for-sale, Unrealized Loss Position	36,687	39,020
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	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	61	113
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	17,404	18,631
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	61	113
Debt Securities, Available-for-sale, Unrealized Loss Position	17,404	18,631
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	338	793
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	4,935	4,481
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	338	793
Debt Securities, Available-for-sale, Unrealized Loss Position	4,935	4,481
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	368	1,153
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	14,693	16,609
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	368	1,153
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 14,693	$ 16,609

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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