INTANGIBLE ASSETS AND GOODWILL (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

The following table reflects the gross carrying amounts and net book values of intangible assets as of December 31, 2020 and 2019 (in thousands):

	December 31, 2020							December 31, 2019
Product rights	Remaining Useful Life (In years)	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Impairment		Net Book Value
INDOCIN Products	11.4	$	154,100	$	(7,812)	$	146,288	$	—	$	—	$	—	$	—
SPRIX	6.4	39,000		(3,389)		35,611		—		—		—		—
CAMBIA	3.0	51,360		(36,163)		15,197		51,360		(31,027)		—		20,333
Zipsor	1.2	27,250		(24,381)		2,869		27,250		(22,044)				5,206
OXAYDO	0.4	300		(183)		117		—		—		—		—
NUCYNTA	0.0	—		—		—		1,019,978		(455,192)		(189,790)		374,996
Total Intangible Assets		$	272,010	$	(71,928)	$	200,082	$	1,098,588	$	(508,263)	$	(189,790)	$	400,535

Summary of the future amortization expenses of intangible assets

The following table reflects expected future amortization expense related to the Company’s intangible assets (in thousands):

Year Ending December 31,	Estimated Amortization Expense
2021	$	26,004
2022	24,081
2023	23,337
2024	18,413
Thereafter	108,247
Total	$	200,082