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Product Revenue, Net - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 4,986,000	$ 1,173,000	$ 7,980,000	$ 9,068,000
Contract with customer product sales gross to net accruals		0		0
Gross product revenue | Customer | AmerisourceBergen Drug Corporation
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	26.40%		28.90%
Gross product revenue | Customer | Cardinal Health
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	25.20%		24.20%
Gross product revenue | Customer | McKesson Corporation
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	20.20%		20.90%
IBSRELA
Disaggregation of Revenue [Line Items]
Revenue	$ 4,900,000		$ 6,900,000
Product sales, net
Disaggregation of Revenue [Line Items]
Revenue	$ 4,885,000	$ 0	$ 6,899,000	$ 0

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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