Intangibles Assets and Goodwill - Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Mar. 31, 2020
Intangibles
Gross Carrying Amount	$ 720,114	$ 719,265
Amortization	(377,671)	(389,428)
Intangible Asset, net	342,443	329,837
Impairment of goodwill	348,557
Customer relationships
Intangibles
Gross Carrying Amount	508,074	507,589
Amortization	(237,313)	(247,272)
Intangible Asset, net	270,761	260,317
Developed technology
Intangibles
Gross Carrying Amount	89,053	88,553
Amortization	(87,109)	(86,734)
Intangible Asset, net	1,944	1,818
Trade names
Intangibles
Gross Carrying Amount	8,400	8,400
Amortization	(3,100)	(3,100)
Intangible Asset, net	5,300	5,300
Additional impairment charge	1,000
Accumulated impairment losses		44,100
Outsource contract costs
Intangibles
Gross Carrying Amount	16,726	15,877
Amortization	(11,749)	(11,360)
Intangible Asset, net	4,977	4,517
Internally developed software
Intangibles
Gross Carrying Amount	43,261	44,247
Amortization	(12,129)	(13,966)
Intangible Asset, net	31,132	30,281
Trademarks
Intangibles
Gross Carrying Amount	23,378	23,378
Amortization	(23,370)	(23,370)
Intangible Asset, net	8	8
Assembled workforce
Intangibles
Gross Carrying Amount	4,473	4,473
Amortization	(1,118)	(1,398)
Intangible Asset, net	3,355	3,075
Purchased software
Intangibles
Gross Carrying Amount	26,749	26,749
Amortization	(1,783)	(2,229)
Intangible Asset, net	$ 24,966	$ 24,520

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

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