Goodwill (Additional Data) (Details) (USD $)	12 Months Ended					1 Months Ended	12 Months Ended					1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2011 Dorado Network Systems [Member]	Sep. 30, 2011 Tarasoft [Member]	Dec. 31, 2012 Dorado and RP Data [Member] Restatement Adjustment [Member] Deferred Taxes [Member]	Dec. 31, 2012 Dorado and RP Data [Member] Restatement Adjustment [Member] Mortgage Origination Services [Member]	Dec. 31, 2012 Dorado and RP Data [Member] Restatement Adjustment [Member] Data and Analytics [Member]	Dec. 31, 2012 Data and Analytics [Member]	Dec. 31, 2011 Data and Analytics [Member]	May 31, 2011 Data and Analytics [Member] RP Data [Member]
Goodwill, acquired during period	$ 33,875,000	$ 192,083,000			$ 19,664,000	$ 17,900,000				$ 33,875,000	$ 172,419,000	$ 154,500,000
Goodwill reclassified to assets of discontinued operations		17,300,000
Restatement of Prior Year Income, Gross							$ (7,266,000)	$ (114,000)	$ (7,152,000)
Discount rate used in weighted average cost of capital calculation			11.00%	15.00%