INTANGIBLE ASSETS (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Apr. 02, 2015	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($) item	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($) item	Dec. 31, 2016 USD ($)
Intangible assets
Gross Carrying Amount		$ 1,109,068		$ 1,109,068		$ 1,109,068
Accumulated amortization		(284,124)		(284,124)		(206,919)
Total		824,944		824,944		902,149
Amortization of intangible assets		25,734	$ 27,037	77,204	$ 81,111
Legal Matters
Number of filers the Company found in favor against | item			3		3
Future amortization expenses of intangible assets
2017 (remainder)		25,734		25,734
2018		102,939		102,939
2019		102,939		102,939
2020		102,939		102,939
2021		102,939		102,939
Thereafter		387,454		$ 387,454
NUCYNTA
Intangible assets
Remaining Useful Life (In years)	10 years
Product rights | NUCYNTA
Intangible assets
Remaining Useful Life (In years)				8 years 3 months 18 days
Gross Carrying Amount		1,019,978		$ 1,019,978		1,019,978
Accumulated amortization		(243,016)		(243,016)		(172,288)
Total		776,962		$ 776,962		847,690
Product rights | CAMBIA
Intangible assets
Remaining Useful Life (In years)				6 years 3 months 18 days
Gross Carrying Amount		51,360		$ 51,360		51,360
Accumulated amortization		(19,471)		(19,471)		(15,619)
Total		31,889		$ 31,889		35,741
Product rights | Lazanda
Intangible assets
Remaining Useful Life (In years)				4 years 10 months 24 days
Gross Carrying Amount		10,480		$ 10,480		10,480
Accumulated amortization		(4,852)		(4,852)		(3,979)
Total		5,628		$ 5,628		6,501
Product rights | Zipsor
Intangible assets
Remaining Useful Life (In years)				4 years 7 months 6 days
Gross Carrying Amount		27,250		$ 27,250		27,250
Accumulated amortization		(16,785)		(16,785)		(15,033)
Total		$ 10,465		$ 10,465		$ 12,217