Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net Revenue	$ 16,124	$ 15,473
Drug products
Disaggregation of Revenue [Line Items]
Net Revenue	221	283
Concentrate Products
Disaggregation of Revenue [Line Items]
Net Revenue	15,903	15,190
U.S.
Disaggregation of Revenue [Line Items]
Net Revenue	14,445	13,911
U.S. | Drug products
Disaggregation of Revenue [Line Items]
Net Revenue	159	225
U.S. | Concentrate Products
Disaggregation of Revenue [Line Items]
Net Revenue	14,286	13,686
Rest of World
Disaggregation of Revenue [Line Items]
Net Revenue	1,679	1,562
Rest of World | Drug products
Disaggregation of Revenue [Line Items]
Net Revenue	62	58
Rest of World | Concentrate Products
Disaggregation of Revenue [Line Items]
Net Revenue	1,617	1,504
Product Sales – Point-in-time | Drug product sales
Disaggregation of Revenue [Line Items]
Net Revenue	159	225
Product Sales – Point-in-time | Concentrate product sales
Disaggregation of Revenue [Line Items]
Net Revenue	15,427	14,705
Product Sales – Point-in-time | U.S. | Drug product sales
Disaggregation of Revenue [Line Items]
Net Revenue	159	225
Product Sales – Point-in-time | U.S. | Concentrate product sales
Disaggregation of Revenue [Line Items]
Net Revenue	13,810	13,201
Product Sales – Point-in-time | Rest of World | Drug product sales
Disaggregation of Revenue [Line Items]
Net Revenue	0	0
Product Sales – Point-in-time | Rest of World | Concentrate product sales
Disaggregation of Revenue [Line Items]
Net Revenue	1,617	1,504
License Fee – Over time | Drug license fee
Disaggregation of Revenue [Line Items]
Net Revenue	62	58
License Fee – Over time | Concentrate product license fee
Disaggregation of Revenue [Line Items]
Net Revenue	476	485
License Fee – Over time | U.S. | Drug license fee
Disaggregation of Revenue [Line Items]
Net Revenue	0	0
License Fee – Over time | U.S. | Concentrate product license fee
Disaggregation of Revenue [Line Items]
Net Revenue	476	485
License Fee – Over time | Rest of World | Drug license fee
Disaggregation of Revenue [Line Items]
Net Revenue	62	58
License Fee – Over time | Rest of World | Concentrate product license fee
Disaggregation of Revenue [Line Items]
Net Revenue	$ 0	$ 0