Acquisitions - Purchase Price Consideration (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Oct. 10, 2021	Jun. 09, 2020	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Contingent consideration liability, high value		$ 230,000
Cash consideration to Seller - net of cash acquired				$ 950	$ 298,541	$ 0
Adamas Pharmaceuticals
Business Acquisition [Line Items]
Cash consideration	$ 400,806
Contingent consideration liability, high value	10,307
Contingent consideration liability accrued in USWM Acquisition	411,113
Adamas Pharmaceuticals | Leased Assets
Business Acquisition [Line Items]
Operating lease asset	6,400
Operating lease liability	$ 7,200
USWM Acquisition
Business Acquisition [Line Items]
Cash consideration		306,485
Contingent consideration liability, high value		74,800
Contingent consideration liability accrued in USWM Acquisition		381,285
Operating lease asset		11,029
Operating lease liability		11,029
Cash consideration to Seller - net of cash acquired		299,491
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration to Seller - net of cash acquired			$ 2,300
Previously Reported | USWM Acquisition
Business Acquisition [Line Items]
Contingent consideration liability, high value		115,700
Cash consideration to Seller - net of cash acquired		$ 297,200