Acquisitions - Schedule of Contingent Consideration, Biologic (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Contingent Consideration Liability [Roll Forward]
Change in fair value of contingent consideration	$ 0	$ (763)	$ (7,377)
Payment of contingent consideration	0	(15,000)	0
Eagle Biologics
Contingent Consideration Liability [Roll Forward]
Opening balance	15,000	16,201
Change in fair value of contingent consideration	0	(1,201)	1,200
Payment of contingent consideration	(15,000)	0
Closing balance	$ 0	$ 15,000	$ 16,201