Short-Term Investments (Details) $ in Thousands	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)
Short-Term Investments
Number of short term investments in unrealized loss position for less than 12 months \| item	16
Aggregate value of short term investments in unrealized loss position	$ 25,600
Short-term investments in unrealized loss position		$ 0
Short-term Investments
Short-Term Investments
Amortized Cost	205,991	39,000
Gross Unrealized Losses	(79)
Fair Value	205,912
Corporate debt securities
Short-Term Investments
Amortized Cost	16,508
Gross Unrealized Losses	(63)
Fair Value	16,445
Treasury bill
Short-Term Investments
Amortized Cost	5,983
Gross Unrealized Losses	(3)
Fair Value	5,980
Yankee securities
Short-Term Investments
Amortized Cost	2,000
Gross Unrealized Losses	(1)
Fair Value	1,999
U.S. agency bonds
Short-Term Investments
Amortized Cost	3,000
Gross Unrealized Losses	(12)
Fair Value	2,988
Reverse repurchase agreements
Short-Term Investments
Amortized Cost	178,500	39,000
Fair Value	$ 178,500	$ 39,000

Amortized cost, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and 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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