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Investments in Marketable Debt Securities, Available-for-Sale - Amortized cost, gross unrealized gains/losses in accumulated other comprehensive loss and fair value of marketable securities, available-for-sale, by type of security (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 94,782
Gross Unrealized Gains	1
Gross Unrealized Losses	(87)
Fair Value	94,696	$ 0
Amortized Cost	55,111
Gross Unrealized Gains	0
Gross Unrealized Losses	(295)
Fair Value	54,816	$ 0
Corporate debt security
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	71,406
Gross Unrealized Gains	0
Gross Unrealized Losses	(57)
Fair Value	71,349
Amortized Cost	42,703
Gross Unrealized Gains	0
Gross Unrealized Losses	(246)
Fair Value	42,457
U.S. treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,415
Gross Unrealized Gains	0
Gross Unrealized Losses	(7)
Fair Value	3,408
Amortized Cost	2,201
Gross Unrealized Gains	0
Gross Unrealized Losses	(5)
Fair Value	2,196
Asset-backed security and other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,555
Gross Unrealized Gains	0
Gross Unrealized Losses	(4)
Fair Value	2,551
Amortized Cost	5,438
Gross Unrealized Gains	0
Gross Unrealized Losses	(28)
Fair Value	5,410
Non-U.S. government and supranational bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	16,405
Gross Unrealized Gains	1
Gross Unrealized Losses	(19)
Fair Value	16,387
Amortized Cost	3,769
Gross Unrealized Gains	0
Gross Unrealized Losses	(16)
Fair Value	3,753
Certificate of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,001
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	1,001
Amortized Cost	1,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	$ 1,000

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

+ References

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-Publisher FASB
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-SubTopic 30
-Section 45
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+ References

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-Publisher FASB
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+ References

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