Intangible Assets (Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ (104,963)	$ (97,121)
Intangible assets, Gross	262,429	348,682
Intangible assets, Net	$ 157,466	251,561
Weighted average useful life	5 years
Trademarks [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross		2,110
Intangible assets with finite lives: Net		2,110
Licenses [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross		5,875
Intangible assets with finite lives: Accumulated Amortization		(5,875)
Patents Costs [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 16,251	20,733
Intangible assets with finite lives: Accumulated Amortization	(4,895)	(7,369)
Intangible assets with finite lives: Net	$ 11,356	13,364
Weighted average useful life	8 years
Acquired Technology [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 52,809	57,383
Intangible assets with finite lives: Accumulated Amortization	(16,405)	(18,241)
Intangible assets with finite lives: Net	$ 36,404	39,142
Weighted average useful life	4 years
Internally Developed Software [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 4,730	9,073
Intangible assets with finite lives: Accumulated Amortization	(2,919)	(5,517)
Intangible assets with finite lives: Net	1,811	3,556
Customer Relationships [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	101,933	157,139
Intangible assets with finite lives: Accumulated Amortization	(36,158)	(36,975)
Intangible assets with finite lives: Net	$ 65,775	120,164
Weighted average useful life	7 years
Non-Compete Agreements [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 12,163	35,469
Intangible assets with finite lives: Accumulated Amortization	(8,558)	(11,784)
Intangible assets with finite lives: Net	$ 3,605	23,685
Weighted average useful life	3 years
Trade Names [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 28,108	21,800
Intangible assets with finite lives: Accumulated Amortization	(12,498)	(4,455)
Intangible assets with finite lives: Net	$ 15,610	17,345
Weighted average useful life	6 years
Other [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets with finite lives: Gross	$ 46,435	39,100
Intangible assets with finite lives: Accumulated Amortization	(23,530)	(6,905)
Intangible assets with finite lives: Net	$ 22,905	$ 32,195
Weighted average useful life	5 years
Minimum [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Minimum [Member] | Patents Costs [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Minimum [Member] | Acquired Technology [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	2 years
Minimum [Member] | Internally Developed Software [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	3 years
Minimum [Member] | Customer Relationships [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	2 years
Minimum [Member] | Non-Compete Agreements [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	2 years
Minimum [Member] | Trade Names [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Minimum [Member] | Other [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	1 year
Maximum [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	19 years
Maximum [Member] | Patents Costs [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	19 years
Maximum [Member] | Acquired Technology [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	15 years
Maximum [Member] | Internally Developed Software [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Weighted average useful life	3 years
Maximum [Member] | Customer Relationships [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	15 years
Maximum [Member] | Non-Compete Agreements [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	5 years
Maximum [Member] | Trade Names [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	9 years
Maximum [Member] | Other [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets estimated useful lives	7 years