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Balance Sheet Account Details (Tables)

12 Months Ended

Dec. 31, 2020

Other Balance Sheet Details [Abstract]

Schedule of Investment Categories

Excluding our investments in Viking, the following table summarizes the various investment categories at December 31, 2020 and 2019 (in thousands):

			Cost						Gross unrealized gains						Gross unrealized losses						Estimated fair value
December 31, 2020
Short-term investments
Mutual fund			$	151,512					$	386					$	—					$	151,898
Bank deposits			84,120						35						(1)						84,154
Commercial paper			45,459						27						(1)						45,485
Corporate bonds			30,512						99						(1)						30,610
Agency bonds			4,499						2						—						4,501
Corporate equity securities			4,466						360						(1,388)						3,438
Treasury bill			3,999						—						—						3,999
Warrants			—						393						—						393
			$	324,567					$	1,302					$	(1,391)					$	324,478
December 31, 2019
Short-term investments
Bank deposits			$	411,690					$	188					$	(3)					$	411,875
Corporate bonds			63,818						161						—						63,979
Corporate equity securities			4,506						416						(1,850)						3,072
Commercial paper			210,525						43						(16)						210,552
Warrants			—						125						—						125
Mutual Fund			250,636						—						(249)						250,387
			$	941,175					$	933					$	(2,118)					$	939,990

Schedule of Available-for-Sale Debt Securities by Contractual Maturity

The following table summarizes our available-for-sale debt securities by contractual maturity (in thousands):

			December 31, 2020
			Amortized Cost						Fair Value
Within one year			$	141,732					$	141,793
After one year through five years			26,856						26,956
After five years			—						—
Total			$	168,588					$	168,749

Schedule of Available-for-Sale Debt Securities in an Unrealized Loss Position

The following table summarizes our available-for-sale debt securities in an unrealized loss position (in thousands):

			Less than 12 months												12 months or greater												Total
			Gross Unrealized Losses						Estimated Fair Value						Gross Unrealized Losses						Estimated Fair Value						Gross Unrealized Losses						Estimated Fair Value
December 31, 2020
Bank deposits			$	(1)					$	14,013					$	—					$	—					$	(1)					$	14,013
Corporate bonds			(1)						4,526						—						—						(1)						4,526
Commercial paper			(1)						7,693						—						—						(1)						7,693
Total			$	(3)					$	26,232					$	—					$	—					$	(3)					$	26,232
December 31, 2019
Bank deposits			$	(3)					$	58,584					$	—					$	—					$	(3)					$	58,584
Commercial paper			(16)						79,362						—						—						(16)						79,362
Total			$	(19)					$	137,946					$	—					$	—					$	(19)					$	137,946

Schedule of Property and Equipment

Property and equipment are stated at cost and consists of the following (in thousands):

			December 31,
			2020						2019
Lab and office equipment			$	14,666					$	6,307
Leasehold improvements			3,519						2,729
Computer equipment and software			1,056						999
			19,241						10,035
Less accumulated depreciation and amortization			(4,807)						(2,850)
			$	14,434					$	7,185

Schedule of Goodwill and Other Identifiable Intangible Assets

Goodwill and identifiable intangible assets consist of the following (in thousands):

			As of December 31,
			2020						2019
Indefinite-lived intangible assets
Goodwill			$	189,662					$	95,229
Definite-lived intangible assets
Complete technology			277,740						242,813
Less: Accumulated amortization			(63,600)						(50,203)
Trade name			2,642						2,642
Less: Accumulated amortization			(1,312)						(1,180)
Customer relationships			40,700						29,600
Less: Accumulated amortization			(15,597)						(13,224)
Contractual relationships			362,000						—
Less: Accumulated amortization			(7,243)						—
Total goodwill and other identifiable intangible assets, net			$	784,992					$	305,677

Schedule of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

			December 31,
			2020						2019
Compensation			$	8,810					$	1,986
Professional fees			977						1,135
Amounts owed to former licensees			421						381
Royalties owed to third parties			693						—
Return reserve			687						3,027
Acquisition related liabilities			1,500						—
Subcontractor			733						—
Supplier			604						—
Other			4,105						2,052
			$	18,530					$	8,581

Schedule of Contingent Liabilities

The following table summarizes rollfoward of contingent liabilities as of December 2020 and 2019 (in thousands):

			December 31, 2018			Payments			Fair Value Adjustment									Repurchases			December 31, 2019			Additional Contingent Liabilities			Payments			Fair Value Adjustment			Repurchases			December 31, 2020
Cydex			$	514		$	(50)		$	(116)								$	—		$	348		$	—		$	—		$	160		$	—		$	508
Metabasis			5,551			—			904									(520)			5,935			—			—			(1,867)			(247)			3,821
Crystal			6,477			(3,000)			(818)									—			2,659			—			(1,800)			(59)			—			800
Icagen			—			—			—									—			—			4,800			(525)			2,129			—			6,404
Pfenex			—			—			—									—			—			37,000			—			600			—			37,600
Total			$	12,542		$	(3,050)		$	(30)								$	(520)		$	8,942		$	41,800		$	(2,325)		$	963		$	(247)		$	49,133

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