Summary of Significant Accounting Policies - Co-Payment Assistance (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Beginning Balance	$ 303
Allowances for current period sales	1,880
Payments & credits	(1,143)
Accounts Receivable, Ending Balance	1,040
Customer credits, discounts And allowances
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Beginning Balance	187
Allowances for current period sales	825
Payments & credits	(641)
Accounts Receivable, Ending Balance	371
Rebates and co-pay assistance
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Beginning Balance	116
Allowances for current period sales	1,055
Payments & credits	(502)
Accounts Receivable, Ending Balance	$ 669