Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	$ 447,325	$ 447,325	$ 492,350
Gross Unrealized Gains	17	17	5
Gross Unrealized Losses	(45,188)	(45,188)	(18,101)
Fair Value	402,154	402,154	474,254
Cash and Cash Equivalents	212,815	212,815	356,332
Marketable Securities	45,900	45,900	72,180
Short-Term Investments	118,514	118,514	14,510
Long-Term Investments	24,925	24,925	31,232
Cash and cash equivalents	212,815	212,815	356,332	$ 266,372
Short-term investments	118,514	118,514	14,510
Long-term investments	24,925	24,925	31,232
Fair value of available for sale investments with unrealized losses	86,700	86,700
Share Purchase Agreement with Cellebrite DI Ltd.
Restricted Cash and Cash Equivalents Items [Line Items]
Marketable securities, unrealized gain (loss)	(11,700)	(26,300)
Common stock | Share Purchase Agreement with Cellebrite DI Ltd.
Restricted Cash and Cash Equivalents Items [Line Items]
Marketable Securities			$ 90,000
Investment owned, shares held			9,000,000
Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	188,541	188,541	$ 103,544
Gross Unrealized Gains	5	5	4
Gross Unrealized Losses	(44,126)	(44,126)	(17,820)
Fair Value	144,420	144,420	85,728
Cash and Cash Equivalents	52,034	52,034	2,844
Marketable Securities	45,900	45,900	72,180
Short-Term Investments	40,810	40,810	10,704
Long-Term Investments	5,676	5,676
Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	103,202	103,202	35,318
Gross Unrealized Gains	12	12	1
Gross Unrealized Losses	(1,062)	(1,062)	(281)
Fair Value	102,152	102,152	35,038
Cash and Cash Equivalents	5,199	5,199
Short-Term Investments	77,704	77,704	3,806
Long-Term Investments	19,249	19,249	31,232
Cash
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	155,582	155,582	353,488
Fair Value	155,582	155,582	353,488
Cash and Cash Equivalents	155,582	155,582	353,488
Money market funds | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	43,550	43,550	2,844
Fair Value	43,550	43,550	2,844
Cash and Cash Equivalents	43,550	43,550	2,844
Agency bonds | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	26,601	26,601	10,700
Gross Unrealized Gains	5	5	4
Gross Unrealized Losses	(2)	(2)
Fair Value	26,604	26,604	10,704
Cash and Cash Equivalents	8,484	8,484
Short-Term Investments	18,120	18,120	10,704
Treasury bills | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	28,390	28,390
Gross Unrealized Losses	(24)	(24)
Fair Value	28,366	28,366
Short-Term Investments	22,690	22,690
Long-Term Investments	5,676	5,676
Marketable securities | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	90,000	90,000	90,000
Gross Unrealized Losses	(44,100)	(44,100)	(17,820)
Fair Value	45,900	45,900	72,180
Marketable Securities	45,900	45,900	72,180
State and municipal obligations | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	5,814	5,814	2,570
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(35)	(35)	(5)
Fair Value	5,780	5,780	2,565
Short-Term Investments	4,257	4,257	1,400
Long-Term Investments	1,523	1,523	1,165
Corporate bonds | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	57,609	57,609	32,748
Gross Unrealized Gains	11	11	1
Gross Unrealized Losses	(1,027)	(1,027)	(276)
Fair Value	56,593	56,593	32,473
Cash and Cash Equivalents	5,199	5,199
Short-Term Investments	33,668	33,668	2,406
Long-Term Investments	17,726	17,726	$ 30,067
Commercial paper | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	39,779	39,779
Fair Value	39,779	39,779
Short-Term Investments	$ 39,779	$ 39,779