Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 75,636	$ 81,686
Accumulated Amortization	(25,728)	(28,310)
Intangible Assets, net	$ 49,908	$ 53,376
Weighted Average Useful Life	7 years 6 months	7 years 10 months 24 days
Product Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		$ 6,050
Accumulated Amortization		(6,050)
Intangible Assets, net		0
License and Distribution Rights | BELBUCA
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 45,000	45,000
Accumulated Amortization	(20,250)	(18,000)
Intangible Assets, net	$ 24,750	$ 27,000
Weighted Average Useful Life	5 years 6 months	6 years
License and Distribution Rights | Symproic
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 30,636	$ 30,636
Accumulated Amortization	(5,478)	(4,260)
Intangible Assets, net	$ 25,158	$ 26,376
Weighted Average Useful Life	10 years 6 months	10 years 9 months 18 days