Investments and Fair Value of Financial Instruments - Marketable Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	$ 161,866	$ 145,786
Less than 12 months: Gross Unrealized Losses	(2,981)	(686)
12 Months of more: Fair Value	2,116	0
12 months or more: Gross Unrealized Losses	(99)	0
Total: Fair Value	163,982	145,786
Total: Gross Unrealized Losses	(3,080)	(686)
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	9,960	16,977
Less than 12 months: Gross Unrealized Losses	(33)	(10)
12 Months of more: Fair Value	0	0
12 months or more: Gross Unrealized Losses	0	0
Total: Fair Value	9,960	16,977
Total: Gross Unrealized Losses	(33)	(10)
U.S. treasury
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	14,076	14,387
Less than 12 months: Gross Unrealized Losses	(392)	(77)
12 Months of more: Fair Value	0	0
12 months or more: Gross Unrealized Losses	0	0
Total: Fair Value	14,076	14,387
Total: Gross Unrealized Losses	(392)	(77)
U.S. agency and government sponsored securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	11,399	6,985
Less than 12 months: Gross Unrealized Losses	(153)	(19)
12 Months of more: Fair Value	0	0
12 months or more: Gross Unrealized Losses	0	0
Total: Fair Value	11,399	6,985
Total: Gross Unrealized Losses	(153)	(19)
U.S. states and municipalities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	34,657	21,924
Less than 12 months: Gross Unrealized Losses	(510)	(89)
12 Months of more: Fair Value	0	0
12 months or more: Gross Unrealized Losses	0	0
Total: Fair Value	34,657	21,924
Total: Gross Unrealized Losses	(510)	(89)
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 months: Fair Value	91,774	85,513
Less than 12 months: Gross Unrealized Losses	(1,893)	(491)
12 Months of more: Fair Value	2,116	0
12 months or more: Gross Unrealized Losses	(99)	0
Total: Fair Value	93,890	85,513
Total: Gross Unrealized Losses	$ (1,992)	$ (491)

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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