Financial Instruments - Summary of Cash and Cash Equivalents, Money Market Funds and Short-term Investments by Significant Investment Category (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	$ 163,999	$ 183,958
Unrealized Gains	0	1
Unrealized Losses	(950)	(202)
Market Value	163,049	183,757
Level 1 \| Money Market Funds
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	16,064	15,329
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	16,064	15,329
Level 2 \| Corporate debt securities included in cash and cash equivalents and short-term investments
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	147,935	163,626
Unrealized Gains	0	1
Unrealized Losses	(950)	(202)
Market Value	146,985	163,425
Level 2 \| U.S. government agency securities included in cash and cash equivalents and short-term investments
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	0	5,003
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	$ 0	$ 5,003

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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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