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Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 120,208	$ 91,407
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(61)	(10)
Fair Value	120,147	91,400
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	81,184	60,630
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(52)	(7)
Fair Value	81,132	60,624
Government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,739
Gross Unrealized Gains	0
Gross Unrealized Losses	(5)
Fair Value	7,734
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	31,285	30,777
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(4)	(3)
Fair Value	$ 31,281	$ 30,776

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- 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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