Product Sales - Schedule of Concentration of Risk, by Risk Factor (Details) - Gross product revenue - Customer concentration risk	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Besse Medical, a subsidiary of AmerisourceBergen Corporation
Concentration Risk [Line Items]
Concentration risk, percentage	55.00%	46.00%
McKesson Corporation
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%	29.00%
U.S. government
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	13.00%

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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