Investment Securities - Summary of Available-For-Sale Investment Securities Held by the Company (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	$ 176,369	$ 133,393
Available-for-sale investment securities, Gross Unrealized Gains	0	7
Available-for-sale investment securities, Gross Unrealized Losses	(2,192)	(388)
Available-for-sale investment securities, Fair Market Value	174,177	133,012
U.S. Government and Agency Obligations
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	99,095	54,637
Available-for-sale investment securities, Gross Unrealized Gains	0	0
Available-for-sale investment securities, Gross Unrealized Losses	(971)	(180)
Available-for-sale investment securities, Fair Market Value	98,124	54,457
Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	4,507	5,735
Available-for-sale investment securities, Gross Unrealized Gains	0	1
Available-for-sale investment securities, Gross Unrealized Losses	(42)	(4)
Available-for-sale investment securities, Fair Market Value	4,465	5,732
Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	70,355	70,600
Available-for-sale investment securities, Gross Unrealized Gains	0	6
Available-for-sale investment securities, Gross Unrealized Losses	(1,172)	(204)
Available-for-sale investment securities, Fair Market Value	69,183	70,402
Asset-backed securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale investment securities, Amortized Cost	2,412	2,421
Available-for-sale investment securities, Gross Unrealized Gains	0	0
Available-for-sale investment securities, Gross Unrealized Losses	(7)	0
Available-for-sale investment securities, Fair Market Value	$ 2,405	$ 2,421

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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).

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