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Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Adjusted Cost	$ 63,940	$ 106,812
Unrealized Gains	356	948
Unrealized Losses	(1,688)	(1,247)
Fair Value	62,608	106,513
Mutual and money market funds
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Adjusted Cost	43,446	78,331
Unrealized Gains	341	813
Unrealized Losses	(1,011)	(1,046)
Fair Value	42,776	78,098
Corporate bonds
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Adjusted Cost	14,338	16,478
Unrealized Gains	12	94
Unrealized Losses	(438)	(93)
Fair Value	13,912	16,479
Government securities - U.S.
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Adjusted Cost	4,188	9,530
Unrealized Gains	3	39
Unrealized Losses	(203)	(98)
Fair Value	3,988	9,471
Other fixed-income securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Adjusted Cost	1,968	2,473
Unrealized Gains	0	2
Unrealized Losses	(36)	(10)
Fair Value	$ 1,932	$ 2,465

X

- Definition

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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