Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Intangible Assets
Goodwill	$ 89,143		$ 89,143		$ 0
Less accumulated amortization	(28,348)		(28,348)		(18,535)
Total intangible assets, net	402,265		402,265		24,840
Additional disclosures
Goodwill adjustments	1,000
Amortization expense	6,108	$ 1,306	9,814	$ 3,918
Acquired Developed Technology and Product Rights
Intangible Assets
Intangible assets, gross	237,000		$ 237,000		0
Acquired Developed Technology and Product Rights \| Minimum
Intangible Assets
Weighted- Average Life (Years)			10 years 3 months 3 days
Acquired Developed Technology and Product Rights \| Maximum
Intangible Assets
Weighted- Average Life (Years)			12 years 3 months 3 days
Capitalized patent defense costs
Intangible Assets
Intangible assets, gross	43,613		$ 43,613		43,375
Capitalized patent defense costs \| Minimum
Intangible Assets
Weighted- Average Life (Years)			2 years 3 months
Capitalized patent defense costs \| Maximum
Intangible Assets
Weighted- Average Life (Years)			6 years 6 months
Acquired In-process Research & Development
Intangible Assets
Intangible assets, gross	$ 150,000		$ 150,000		$ 0