Segment Information (Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Operating Revenues	$ 439,851	$ 453,543
Depreciation and Amortization	43,472	39,644
Operating Income/(Loss)	32,563	58,225
Equity in Earnings/(Losses) of Affiliates, Net of Tax	(723)	(90)
Net Income/(Loss) From Continuing Operations	12,708	27,538
Capital Expenditures	17,112	18,831
Assets	3,914,536		$ 3,906,872
Operating Segments [Member] | Property Intelligence [Member]
Segment Reporting Information [Line Items]
Operating Revenues	227,417	241,439
Depreciation and Amortization	32,654	27,926
Operating Income/(Loss)	10,713	18,080
Equity in Earnings/(Losses) of Affiliates, Net of Tax	(1,086)	48
Net Income/(Loss) From Continuing Operations	8,854	16,687
Capital Expenditures	11,171	11,895
Assets	2,429,392		2,429,167
Operating Segments [Member] | Risk Management and Work Flow [Member]
Segment Reporting Information [Line Items]
Operating Revenues	214,104	215,019
Depreciation and Amortization	6,008	7,718
Operating Income/(Loss)	42,109	52,933
Equity in Earnings/(Losses) of Affiliates, Net of Tax	0	0
Net Income/(Loss) From Continuing Operations	42,100	52,923
Capital Expenditures	3,041	2,335
Assets	1,310,332		1,328,008
Corporate [Member]
Segment Reporting Information [Line Items]
Operating Revenues	0	(5)
Depreciation and Amortization	4,810	4,000
Operating Income/(Loss)	(20,259)	(12,788)
Equity in Earnings/(Losses) of Affiliates, Net of Tax	363	(138)
Net Income/(Loss) From Continuing Operations	(38,246)	(42,072)
Capital Expenditures	2,900	4,601
Assets	5,600,913		5,575,846
Eliminations [Member]
Segment Reporting Information [Line Items]
Operating Revenues	(1,670)	(2,910)
Depreciation and Amortization	0	0
Operating Income/(Loss)	0	0
Equity in Earnings/(Losses) of Affiliates, Net of Tax	0	0
Net Income/(Loss) From Continuing Operations	0	0
Capital Expenditures	0	$ 0
Assets	$ (5,426,101)		$ (5,426,149)