Segment Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of reportable segments	2
Operating Revenue	$ 310,417,000	$ 331,301,000
Depreciation and amortization	29,439,000	34,141,000
Income From Continuing Operations	13,653,000	47,335,000
Equity in Earnings of Affiliates, Net of Tax	2,382,000	8,788,000
Net Income From Continuing Operations	(3,611,000)	31,589,000
Capital Expenditures	20,612,000	27,539,000
Assets	3,585,703,000		2,865,332,000
Data and analytics [Member]
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	800,000	3,500,000
Segment reporting intercompany expense	(200,000)	(1,400,000)
Operating Revenue	142,533,000	145,515,000
Depreciation and amortization	20,537,000	19,519,000
Income From Continuing Operations	16,674,000	25,252,000
Equity in Earnings of Affiliates, Net of Tax	(13,000)	637,000
Net Income From Continuing Operations	16,638,000	26,046,000
Capital Expenditures	12,622,000	13,160,000
Assets	2,013,302,000		1,325,253,000
Mortgage origination services [Member]
Segment Reporting Information [Line Items]
Segment reporting intercompany revenue	700,000	700,000
Segment reporting intercompany expense	700,000	3,300,000
Operating Revenue	169,309,000	189,901,000
Depreciation and amortization	5,968,000	6,703,000
Income From Continuing Operations	23,730,000	49,856,000
Equity in Earnings of Affiliates, Net of Tax	3,976,000	13,447,000
Net Income From Continuing Operations	27,572,000	63,173,000
Capital Expenditures	2,654,000	4,248,000
Assets	1,172,696,000		1,139,420,000
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Operating Revenue	58,000	167,000
Depreciation and amortization	2,934,000	7,919,000
Income From Continuing Operations	(26,751,000)	(27,773,000)
Equity in Earnings of Affiliates, Net of Tax	(1,581,000)	(5,296,000)
Net Income From Continuing Operations	(47,821,000)	(57,630,000)
Capital Expenditures	5,336,000	10,131,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Operating Revenue	(1,483,000)	(4,282,000)
Depreciation and amortization	0	0
Income From Continuing Operations	0	0
Equity in Earnings of Affiliates, Net of Tax	0	0
Net Income From Continuing Operations	0	0
Capital Expenditures	0	0
Assets	(4,749,726,000)		(4,098,281,000)
Corporate Level [Member]
Segment Reporting Information [Line Items]
Assets	$ 5,149,431,000		$ 4,498,940,000