Intangibles Assets and Goodwill - Intangibles (Details) - USD ($) $ in Thousands		12 Months Ended
Oct. 01, 2017	Dec. 31, 2018	Dec. 31, 2017
Intangibles
Gross Carrying Amount		$ 745,471	$ 700,249
Amortization		(338,450)	(235,265)
Intangible Asset, net		407,021	464,984
Impairment of goodwill		44,400
Customer relationships
Intangibles
Gross Carrying Amount		507,905	504,643
Amortization		(190,666)	(135,962)
Intangible Asset, net		317,239	368,681
Developed technology
Intangibles
Gross Carrying Amount		89,053	89,076
Amortization		(85,967)	(77,103)
Intangible Asset, net		3,086	11,973
Trade names
Intangibles
Gross Carrying Amount		9,400	13,100
Amortization		(3,100)
Intangible Asset, net		6,300	13,100
Impairment charge	$ 6,300	3,700	39,400
Additional impairment charge		33,000
Accumulated impairment losses		43,100	39,400
Outsource contract costs
Intangibles
Gross Carrying Amount		46,342	40,456
Amortization		(27,719)	(17,526)
Intangible Asset, net		18,623	22,930
Internally developed software-Connect Platform
Intangibles
Gross Carrying Amount		36,820	28,254
Amortization		(6,278)	(2,597)
Intangible Asset, net		30,542	25,657
Trademarks
Intangibles
Gross Carrying Amount		23,379	23,370
Amortization		(23,370)	(1,446)
Intangible Asset, net		9	21,924
Non compete agreements
Intangibles
Gross Carrying Amount		1,350	1,350
Amortization		(1,350)	(631)
Intangible Asset, net			719
Assembled workforce
Intangibles
Gross Carrying Amount		4,473
Intangible Asset, net		4,473
Purchased software
Intangibles
Gross Carrying Amount		26,749
Intangible Asset, net		$ 26,749
ITPS \| Trade names
Intangibles
Impairment charge			(23,100)
HS \| Trade names
Intangibles
Impairment charge			(9,600)
LLPS \| Trade names
Intangibles
Impairment charge			$ (6,600)

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

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

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