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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue from Contracts with Customers
Total product revenues, net	$ 209,361	$ 159,301	$ 575,118	$ 449,500
Belbuca
Revenue from Contracts with Customers
Total product revenues, net	58,255	53,197	162,513	156,058
Xtampza ER
Revenue from Contracts with Customers
Total product revenues, net	50,478	49,492	150,725	139,876
Jornay PM
Revenue from Contracts with Customers
Total product revenues, net	41,802	7,961	102,967	7,961
Nucynta IR
Revenue from Contracts with Customers
Total product revenues, net	31,988	25,361	85,906	76,524
Nucynta ER
Revenue from Contracts with Customers
Total product revenues, net	22,813	19,773	62,445	58,231
Symproic
Revenue from Contracts with Customers
Total product revenues, net	$ 4,025	$ 3,517	$ 10,562	$ 10,850

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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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