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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Goodwill and Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Expected useful life			11 years 7 months 15 days
Impairment charges of intangible assets	$ 319,246	$ 0	$ 319,246	$ 15,963
Amortization of intangible assets			$ 81,400	$ 58,300
Minimum
Finite-Lived Intangible Assets [Line Items]
Expected useful life			7 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Expected useful life			20 years
Makena \| Developed technology rights
Finite-Lived Intangible Assets [Line Items]
Expected useful life			7 years
Impairment charges of intangible assets	$ 319,200