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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue
Total revenues	$ 127,013	$ 78,843	$ 334,313	$ 249,506
Xtampza ER
Disaggregation of Revenue
Total revenues	38,859	30,016	103,567	98,448
Nucynta IR
Disaggregation of Revenue
Total revenues	27,274	29,086	83,163	88,853
Nucynta ER
Disaggregation of Revenue
Total revenues	17,133	$ 19,741	53,473	$ 62,205
Belbuca
Disaggregation of Revenue
Total revenues	38,802		84,413
Symproic
Disaggregation of Revenue
Total revenues	3,580		7,740
Elyxyb
Disaggregation of Revenue
Total revenues	218		352
Other
Disaggregation of Revenue
Total revenues	$ 1,147		$ 1,605

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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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