INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

The following table reflects the gross carrying amounts and net book values of intangible assets as of March 31, 2021 and December 31, 2020 (dollar amounts in thousands): 

	March 31, 2021							December 31, 2020
	Remaining Useful Life  (In years)	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Products rights:
INDOCIN	11.1	$	154,100	$	(11,022)	$	143,078	$	154,100	$	(7,812)	$	146,288
SPRIX	6.1	39,000		(4,782)		34,218		39,000		(3,389)		35,611
CAMBIA	1.8	51,360		(37,447)		13,913		51,360		(36,163)		15,197
Zipsor	1.0	27,250		(24,965)		2,285		27,250		(24,381)		2,869
Oxaydo	Less than 1 year	300		(258)		42		300		(183)		117
Total Intangible Assets		$	272,010	$	(78,474)	$	193,536	$	272,010	$	(71,928)	$	200,082

Amortization expense was $6.5 million and $7.8 million for the three months ended March 31, 2021 and 2020, respectively.

The following table reflects future amortization expense the Company expects for its intangible assets (in thousands): 

Year Ending December 31,	Estimated Amortization Expense
2021 (remainder)	$	21,569
2022	26,895
2023	18,412
2024	18,413
2025	18,413
Thereafter	89,834
Total	$	193,536