Cash, Cash Equivalents and Investments - Fair value and Amortized cost (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	$ 20,903	$ 94,746
Short-term Investment	64,822	22,287
Long-term Investment		31,042
Cash, cash equivalents and money market funds
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	18,904	94,746
Available-for-sale:
Amortized Cost	18,904	94,746
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	18,904	94,746
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	1,999
Short-term Investment	60,917	15,014
Long-term Investment		30,554
Available-for-sale:
Amortized Cost	63,480	45,665
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(564)	(97)
Estimated Fair Value	62,916	45,568
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Short-term Investment	2,981	6,089
Available-for-sale:
Amortized Cost	2,991	6,093
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(10)	(4)
Estimated Fair Value	2,981	6,089
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Short-term Investment	924	1,184
Long-term Investment		488
Available-for-sale:
Amortized Cost	931	1,673
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7)	(1)
Estimated Fair Value	924	1,672
Total
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	20,903	94,746
Short-term Investment	64,822	22,287
Long-term Investment		31,042
Available-for-sale:
Amortized Cost	86,306	148,177
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(581)	(102)
Estimated Fair Value	$ 85,725	$ 148,075

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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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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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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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