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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Goodwill, Regulatory Authorizations and Other Intangible Assets (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Other intangible assets
Cost	$ 530,269		$ 530,269		$ 716,335
Accumulated Amortization	(431,903)		(431,903)		(583,682)
Carrying Amount	98,366		98,366		132,653
Amortization expense	13,800	$ 18,200	44,700	$ 57,600
Customer relationships
Other intangible assets
Cost	293,932		293,932		293,932
Accumulated Amortization	(232,017)		(232,017)		(213,543)
Carrying Amount	61,915		$ 61,915		80,389
Customer relationships \| Weighted Average
Other intangible assets
Weighted Average Useful Life			8 years
Contract-based
Other intangible assets
Cost	69,440		$ 69,440		255,366
Accumulated Amortization	(69,440)		(69,440)		(251,493)
Carrying Amount	0		$ 0		3,873
Contract-based \| Weighted Average
Other intangible assets
Weighted Average Useful Life			4 years
Technology-based
Other intangible assets
Cost	137,197		$ 137,197		137,337
Accumulated Amortization	(122,526)		(122,526)		(111,840)
Carrying Amount	14,671		$ 14,671		25,497
Technology-based \| Weighted Average
Other intangible assets
Weighted Average Useful Life			7 years
Trademark portfolio
Other intangible assets
Cost	29,700		$ 29,700		29,700
Accumulated Amortization	(7,920)		(7,920)		(6,806)
Carrying Amount	$ 21,780		$ 21,780		$ 22,894
Trademark portfolio \| Weighted Average
Other intangible assets
Weighted Average Useful Life			20 years