Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Business Combination, Contingent Consideration, Liability, Increase From Acquisitions

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Fair Value Measurements - Fair Value of Contingent Consideration Liabilities (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 16, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2018				$ 0
Contingent consideration related to acquisition of Exonics				172,041
Increase in fair value of contingent payments		$ 2,959	$ 0	2,959	$ 0
Balance at September 30, 2019		$ 175,000		$ 175,000
Exonics Therapeutics
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Contingent consideration related to acquisition of Exonics	$ 172,041
Intangible assets	$ 13,000