Revenue from Contracts with Customers Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 339,410	$ 347,337	$ 343,374
U.S.
Disaggregation of Revenue [Line Items]
Total revenues	294,796	303,989	288,580
U.S. | Product revenue, net
Disaggregation of Revenue [Line Items]
Total revenues	284,885	303,989	288,580
U.S. | License and royalty revenues
Disaggregation of Revenue [Line Items]
Total revenues	9,911	0	0
International
Disaggregation of Revenue [Line Items]
Total revenues	44,614	43,348	54,794
International | Product revenue, net
Disaggregation of Revenue [Line Items]
Total revenues	42,810	41,287	52,556
International | License and royalty revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,804	$ 2,061	$ 2,238