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Fair Value of Financial Assets and Liabilities - By Type of Security (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Marketable securities:
Book Value	$ 149,091	$ 185,436
Gross Unrealized Gain	9	4
Gross Unrealized Loss	(1,144)	(904)
Fair Value	147,956	184,536
Corporate debt securities
Marketable securities:
Book Value	52,169	40,626
Gross Unrealized Loss	(463)	(251)
Fair Value	51,706	40,375
Debt securities, maturity dates between one and five years	$ 27,500	$ 4,800
Corporate debt securities | Minimum
Marketable securities:
Marketable securities maturity period	1 year	1 year
Corporate debt securities | Maximum
Marketable securities:
Marketable securities maturity period	2 years	5 years
Commercial paper
Marketable securities:
Book Value	$ 14,663	$ 79,598
Gross Unrealized Loss	(31)
Fair Value	14,632	79,598
Treasury bills
Marketable securities:
Book Value	4,936
Gross Unrealized Gain	1
Fair Value	4,937
Asset-backed securities
Marketable securities:
Book Value	11,349	14,641
Gross Unrealized Gain	8	4
Gross Unrealized Loss	(21)	(123)
Fair Value	11,336	14,522
Debt securities, maturity dates between one and five years	$ 11,300	$ 2,400
Asset-backed securities | Minimum
Marketable securities:
Marketable securities maturity period	2 years	1 year
Asset-backed securities | Maximum
Marketable securities:
Marketable securities maturity period	4 years	5 years
Foreign government agency debt securities
Marketable securities:
Book Value	$ 4,659
Gross Unrealized Loss	(18)
Fair Value	4,641
Debt securities, maturity dates between one and five years	$ 4,600
Foreign government agency debt securities | Minimum
Marketable securities:
Marketable securities maturity period	1 year
Foreign government agency debt securities | Maximum
Marketable securities:
Marketable securities maturity period	2 years
U.S. government and agency debt securities
Marketable securities:
Book Value	$ 61,315	$ 50,571
Gross Unrealized Loss	(611)	(530)
Fair Value	60,704	50,041
Debt securities, maturity dates between one and five years	$ 40,500	$ 5,000
U.S. government and agency debt securities | Minimum
Marketable securities:
Marketable securities maturity period	1 year	1 year
U.S. government and agency debt securities | Maximum
Marketable securities:
Marketable securities maturity period	2 years	5 years

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