Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Product Revenue, Net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 468	$ 6,582
Gross-to-net sales accruals	$ 154	0	$ 0
Gross product revenue \| Customer \| AmerisourceBergen Drug Corporation
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	17.10%
Gross product revenue \| Customer \| Cardinal Health
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	17.90%
Gross product revenue \| Customer \| McKesson Corporation
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	15.40%
IBSRELA
Disaggregation of Revenue [Line Items]
Revenue	$ 500
Product sales, net
Disaggregation of Revenue [Line Items]
Revenue	$ 450	$ 0