Segment Information (Tables) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales Revenue, Services, Net	$ 364,772,000	$ 326,104,000
Depreciation and amortization	35,920,000	29,506,000
Operating Income (Loss)	49,265,000	14,827,000
Income (Loss) from Equity Method Investments	3,766,000	2,382,000
Net income/(loss) from continuing operations	29,498,000	(2,913,000)
Expenditures for Additions to Long-lived Assets	22,641,000	20,612,000
Segment Reporting Information, Assets (Excluding Discontinued Operations Assets)	3,469,252,000		3,512,095,000
Data and Analytics [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Net	165,551,000	138,858,000
Depreciation and amortization	25,603,000	20,092,000
Operating Income (Loss)	26,406,000	15,816,000
Income (Loss) from Equity Method Investments	(522,000)	(13,000)
Net income/(loss) from continuing operations	25,844,000	15,780,000
Expenditures for Additions to Long-lived Assets	16,934,000	12,250,000
Segment Reporting Information, Assets (Excluding Discontinued Operations Assets)	1,854,351,000		1,886,478,000
Technology and Processing Solutions [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Net	201,620,000	189,613,000
Depreciation and amortization	6,772,000	6,479,000
Operating Income (Loss)	44,178,000	25,280,000
Income (Loss) from Equity Method Investments	6,663,000	3,977,000
Net income/(loss) from continuing operations	50,765,000	29,123,000
Expenditures for Additions to Long-lived Assets	1,437,000	2,861,000
Segment Reporting Information, Assets (Excluding Discontinued Operations Assets)	1,301,870,000		1,297,903,000
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Net	18,000	58,000
Depreciation and amortization	3,545,000	2,935,000
Operating Income (Loss)	(21,319,000)	(26,269,000)
Income (Loss) from Equity Method Investments	(2,375,000)	(1,582,000)
Net income/(loss) from continuing operations	(47,111,000)	(47,816,000)
Expenditures for Additions to Long-lived Assets	4,270,000	5,501,000
Segment Reporting Information, Assets (Excluding Discontinued Operations Assets)	5,087,681,000		5,102,328,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Net	(2,417,000)	(2,425,000)
Depreciation and amortization	0	0
Operating Income (Loss)	0	0
Income (Loss) from Equity Method Investments	0	0
Net income/(loss) from continuing operations	0	0
Expenditures for Additions to Long-lived Assets	0	0
Segment Reporting Information, Assets (Excluding Discontinued Operations Assets)	$ (4,774,650,000)		$ (4,774,614,000)