Discontinued Operations (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 0	$ (3,454,000)
Income Statement [Abstract]
(Loss)/income from discontinued operations, net of tax	(656,000)	(8,967,000)
Components Total [Member]
Statement of Financial Position [Abstract]
Total assets	791,000		794,000
Total liabilities	3,463,000		3,352,000
Income Statement [Abstract]
Operating revenue		50,828,000
(Loss)/income from discontinued operation before income taxes	(1,062,000)	(12,376,000)
Income tax expense/(benefit)	(406,000)	(3,409,000)
(Loss)/income from discontinued operations, net of tax	(656,000)	(8,967,000)
Data and analytics [Member] | Marketing [Member]
Statement of Financial Position [Abstract]
Total assets	204,000		204,000
Total liabilities	747,000		776,000
Income Statement [Abstract]
Operating revenue		0
(Loss)/income from discontinued operation before income taxes	(110,000)	122,000
Income tax expense/(benefit)	(42,000)	47,000
(Loss)/income from discontinued operations, net of tax	(68,000)	75,000
Data and analytics [Member] | Consumer [Member]
Statement of Financial Position [Abstract]
Total assets	251,000		251,000
Total liabilities	132,000		691,000
Income Statement [Abstract]
Operating revenue		22,836,000
(Loss)/income from discontinued operation before income taxes	196,000	1,729,000
Income tax expense/(benefit)	75,000	672,000
(Loss)/income from discontinued operations, net of tax	121,000	1,057,000
Mortgage origination services [Member] | Discontinued Operations Appraisal [Member]
Statement of Financial Position [Abstract]
Total assets	336,000		337,000
Total liabilities	2,620,000		1,920,000
Income Statement [Abstract]
Operating revenue		9,986,000
(Loss)/income from discontinued operation before income taxes	(1,148,000)	(14,199,000)
Income tax expense/(benefit)	(439,000)	(4,117,000)
(Loss)/income from discontinued operations, net of tax	(709,000)	(10,082,000)
Default services [Member] | Transportation [Member]
Statement of Financial Position [Abstract]
Total assets	0		2,000
Total liabilities	(36,000)		(35,000)
Income Statement [Abstract]
Operating revenue		18,006,000
(Loss)/income from discontinued operation before income taxes	0	(28,000)
Income tax expense/(benefit)	0	(11,000)
(Loss)/income from discontinued operations, net of tax	0	(17,000)
Impairment of Intangible Assets [Member] | Discontinued Operations Appraisal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, not discontinued operation, loss on write-down of goodwill		$ 13,900,000