Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	$ 462,378	$ 462,378	$ 492,350
Gross Unrealized Gains	14	14	5
Gross Unrealized Losses	(56,238)	(56,238)	(18,101)
Fair Value	406,154	406,154	474,254
Cash and Cash Equivalents	147,711	147,711	356,332
Marketable Securities	35,280	35,280	72,180
Short-Term Investments	194,627	194,627	14,510
Long-Term Investments	28,536	28,536	31,232
Cash and cash equivalents	147,711	147,711	356,332	$ 281,691
Short-term investments	194,627	194,627	14,510
Long-term investments	28,536	28,536	31,232
Fair value of available for sale investments with unrealized losses	136,300	136,300
Share Purchase Agreement with Cellebrite DI Ltd.
Restricted Cash and Cash Equivalents Items [Line Items]
Marketable securities, unrealized gain (loss)	(10,600)	(36,900)
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	220,574	220,574	$ 103,544
Gross Unrealized Gains	8	8	4
Gross Unrealized Losses	(54,951)	(54,951)	(17,820)
Fair Value	165,631	165,631	85,728
Cash and Cash Equivalents	49,981	49,981	2,844
Marketable Securities	35,280	35,280	72,180
Short-Term Investments	76,124	76,124	10,704
Long-Term Investments	4,246	4,246
Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	147,166	147,166	35,318
Gross Unrealized Gains	6	6	1
Gross Unrealized Losses	(1,287)	(1,287)	(281)
Fair Value	145,885	145,885	35,038
Cash and Cash Equivalents	3,092	3,092
Short-Term Investments	118,503	118,503	3,806
Long-Term Investments	24,290	24,290	31,232
Cash
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	94,638	94,638	353,488
Fair Value	94,638	94,638	353,488
Cash and Cash Equivalents	94,638	94,638	353,488
Money market funds | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	6,982	6,982	2,844
Fair Value	6,982	6,982	2,844
Cash and Cash Equivalents	6,982	6,982	2,844
Agency bonds | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	68,072	68,072	10,700
Gross Unrealized Gains	6	6	4
Gross Unrealized Losses	(69)	(69)
Fair Value	68,009	68,009	10,704
Cash and Cash Equivalents	28,000	28,000
Short-Term Investments	35,763	35,763	10,704
Long-Term Investments	4,246	4,246
Treasury bills | Fair Value, Inputs, Level 1
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	55,520	55,520
Gross Unrealized Gains	2	2
Gross Unrealized Losses	(162)	(162)
Fair Value	55,360	55,360
Cash and Cash Equivalents	14,999	14,999
Short-Term Investments	40,361	40,361
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	(54,720)	(54,720)	(17,820)
Fair Value	35,280	35,280	72,180
Marketable Securities	35,280	35,280	72,180
State and municipal obligations | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	6,935	6,935	2,570
Gross Unrealized Losses	(54)	(54)	(5)
Fair Value	6,881	6,881	2,565
Short-Term Investments	6,881	6,881	1,400
Long-Term Investments			1,165
Corporate bonds | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	75,412	75,412	32,748
Gross Unrealized Gains	6	6	1
Gross Unrealized Losses	(1,233)	(1,233)	(276)
Fair Value	74,185	74,185	32,473
Cash and Cash Equivalents	2,096	2,096
Short-Term Investments	47,799	47,799	2,406
Long-Term Investments	24,290	24,290	$ 30,067
Commercial paper | Fair Value, Inputs, Level 2
Restricted Cash and Cash Equivalents Items [Line Items]
Amortized Cost	64,819	64,819
Fair Value	64,819	64,819
Cash and Cash Equivalents	996	996
Short-Term Investments	$ 63,823	$ 63,823