INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 101,774	$ 101,774	$ 102,745
Loss on impairment of intangible asset	189,790	0	$ 0
Finite-lived intangible asset, fair value	400,535	$ 692,099
NUCYNTA
Finite-Lived Intangible Assets [Line Items]
Loss on impairment of intangible asset	189,800
Finite-lived intangible asset, fair value	$ 375,000			$ 564,800

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

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