Short-Term Investments (Details) $ in Thousands	Sep. 30, 2022 USD ($) item	Dec. 31, 2021 USD ($) item
Short-term Investments
Short-Term Investments
Amortized Cost	$ 70,814	$ 39,000
Gross Unrealized Losses	(215)
Fair Value	$ 70,599	$ 39,000
Number of short term investments in unrealized loss position for less than 12 months \| item	23
Aggregate value of short term investments in unrealized loss position for less than 12 months	$ 40,400
Number of short term investments in unrealized loss position \| item		0
Corporate debt securities
Short-Term Investments
Amortized Cost	26,384
Gross Unrealized Losses	(156)
Fair Value	26,228
Treasury Bills
Short-Term Investments
Amortized Cost	5,935
Gross Unrealized Losses	(6)
Fair Value	5,929
Yankee securities
Short-Term Investments
Amortized Cost	4,995
Gross Unrealized Losses	(26)
Fair Value	4,969
U.S. agency bonds
Short-Term Investments
Amortized Cost	3,000
Gross Unrealized Losses	(27)
Fair Value	2,973
Reverse repurchase agreements
Short-Term Investments
Amortized Cost	30,500	$ 39,000
Fair Value	$ 30,500	$ 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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