Costs from Wind Down of Bevyxxa Activities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cost of sales	$ 119,391	$ 80,381	$ 92,384	$ 95,768	$ 102,479	$ 83,321	$ 107,706	$ 91,944	$ 387,924	$ 385,450	$ 295,225
Provision for excess and obsolete inventories									4,152	2,246	$ 0
Cost of Sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provision for excess and obsolete inventories									$ 17,800	$ 12,600
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cost of sales	27,500
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment | Cost of Sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Provision for excess and obsolete inventories	13,700
Write-off of long-term prepaid manufacturing asset	7,800
Impairment charge	3,700
Accrual of firm purchase commitments expense	$ 2,300