Revenues, Recognition and Allowances - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue, net	$ 11,588	$ 7,447
Company product sales
Disaggregation of Revenue [Line Items]
Revenue, net	10,595	7,139
Contract manufacturing sales
Disaggregation of Revenue [Line Items]
Revenue, net	818	197
Research and development services and other income
Disaggregation of Revenue [Line Items]
Revenue, net	175	111
Topical
Disaggregation of Revenue [Line Items]
Revenue, net	7,020	5,380
Injectables
Disaggregation of Revenue [Line Items]
Revenue, net	$ 3,575	$ 1,759