Summary of Significant Accounting Policies - Accounts receivable and Concentrations (Details) - item	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Supplier risk
Concentrations
Number of suppliers	2
Total net revenue | Customer risk | One major pharmaceutical distributors
Concentrations
Number of major distributors	3	1
Total net revenue | Customer risk | Customer 1
Concentrations
Concentration risk (as a percentage)	73.00%	97.00%
Total net revenue | Customer risk | Customer 2
Concentrations
Concentration risk (as a percentage)	11.00%
Total net revenue | Customer risk | Customer 3
Concentrations
Concentration risk (as a percentage)	12.00%
Total net revenue | Customer risk | Minimum | Customer 1
Concentrations
Concentration risk (as a percentage)	10.00%	10.00%
Total accounts receivable | Customer risk | Customer 1
Concentrations
Concentration risk (as a percentage)	16.00%	95.00%
Total accounts receivable | Customer risk | Customer 2
Concentrations
Concentration risk (as a percentage)	37.00%
Total accounts receivable | Customer risk | Customer 3
Concentrations
Concentration risk (as a percentage)	37.00%