Marketable Debt and Equity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities
Cash and cash equivalents	$ 143,480	$ 163,544
Investments, amortized cost	579,624	594,038
Investments	578,124	594,123
Total amortized cost	455,732
Gross unrealized gains	1	94
Gross unrealized losses	(1,501)	(9)
Marketable Securities	454,232
Marketable securities
Schedule of Available-for-sale Securities
Marketable Securities	454,232	435,186
Money Market Funds
Schedule of Available-for-sale Securities
Cash and cash equivalents	123,892	158,937
Corporate Securities
Schedule of Available-for-sale Securities
Total amortized cost	144,584	119,782
Gross unrealized gains		57
Gross unrealized losses	(166)	(6)
Marketable Securities	144,418	119,833
Government Securities
Schedule of Available-for-sale Securities
Total amortized cost	311,148	315,319
Gross unrealized gains	1	37
Gross unrealized losses	(1,335)	(3)
Marketable Securities	309,814	315,353
Cash and Cash Equivalents
Schedule of Available-for-sale Securities
Cash and cash equivalents	$ 123,892	$ 158,937

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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