Revenues, Recognition and Allowances - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue, net	$ 10,433	$ 13,586	$ 22,021	$ 21,033
Company product sales
Disaggregation of Revenue [Line Items]
Revenue, net	9,716	13,025	20,311	20,164
Contract manufacturing sales
Disaggregation of Revenue [Line Items]
Revenue, net	713	310	1,531	507
Research and development services and other income
Disaggregation of Revenue [Line Items]
Revenue, net	4	251	179	362
Topical
Disaggregation of Revenue [Line Items]
Revenue, net	5,474	8,776	12,494	14,156
Injectables
Disaggregation of Revenue [Line Items]
Revenue, net	$ 4,242	$ 4,249	$ 7,817	$ 6,008