Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$ 415,503	$ 551,509
Gross Unrealized Gains	3	18
Gross Unrealized Losses	(754)	(266)
Debt Securities, Available-for-sale	414,752	551,261
Cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	224,291	267,621
Debt Securities, Available-for-sale	224,291	267,621
Cash equivalents [Member] \| Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	63,290	149,429
Debt Securities, Available-for-sale	63,290	149,429
Cash equivalents [Member] \| Time deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	45,501	35,342
Debt Securities, Available-for-sale	45,501	35,342
Cash equivalents [Member] \| Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	115,500	77,850
Debt Securities, Available-for-sale	115,500	77,850
Cash equivalents [Member] \| Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost		5,000
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Debt Securities, Available-for-sale		5,000
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	171,570	252,721
Gross Unrealized Gains	3	18
Gross Unrealized Losses	(393)	(117)
Debt Securities, Available-for-sale	171,180	252,622
Short-term investments [Member] \| Time deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	19,994	25,598
Debt Securities, Available-for-sale	19,994	25,598
Short-term investments [Member] \| Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	34,000	57,000
Gross Unrealized Losses	(10)	(14)
Debt Securities, Available-for-sale	33,990	56,986
Short-term investments [Member] \| Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	117,576	170,123
Gross Unrealized Gains	3	18
Gross Unrealized Losses	(383)	(103)
Debt Securities, Available-for-sale	117,196	170,038
Long-term investments [Member] \| Government and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	19,642	31,167
Gross Unrealized Losses	(361)	(149)
Debt Securities, Available-for-sale	$ 19,281	$ 31,018

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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