Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 Total [Member]
Current assets:
Cash and cash equivalents	$ 125,559		$ 148,858
Available-for-sale Securities, Equity Securities	21,871		22,168
Accounts receivable (less allowance for doubtful accounts of $23,943 and $21,643 as of March 31, 2013 and December 31, 2012, respectively)	260,274		255,148
Prepaid expenses and other current assets	45,228		50,036
Income tax receivable	0		14,084
Deferred income tax assets, current	98,836		98,836
Assets of discontinued operations	791		794
Total current assets	552,559		589,924
Property and equipment, net	186,399	186,617	186,617
Goodwill, net	1,504,246	1,504,232	1,504,232
Other intangible assets, net	170,106	171,584	171,584
Capitalized data and database costs, net	324,216		322,289
Investment in affiliates, net	97,233		94,227
Deferred income tax assets, long-term			0
Restricted cash	22,158		22,117
Other assets	151,274		138,837
Total assets	3,008,191		3,029,827
Current liabilities:
Accounts payable and accrued expenses	181,921	157,190
Accrued salaries and benefits	72,020	114,165
Income taxes payable	20,704	0
Deferred revenue, current	224,725	242,282
Current portion of long-term debt	104	102
Liabilities of discontinued operations	3,463	3,352
Total current liabilities	502,937	517,091	517,091
Long-term debt, net of current	788,048	792,324	792,324
Deferred revenue, net of current	342,731	309,418	309,418
Deferred income tax liabilities, long term	74,947	71,361	71,361
Other liabilities	166,546	168,687	168,687
Total liabilities	1,875,209	1,858,881
CoreLogic stockholders' equity:
Preferred stock, $0.00001 par value; 500 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.00001 par value; 180,000 shares authorized; 95,360 and 97,698 shares issued and outstanding as of March 31, 2013 and December 31, 2012, respectively	1	1
Additional paid-in capital	797,371	866,720
Retained earnings	351,662	318,094
Accumulated other comprehensive loss	(16,052)	(15,514)
Total Corelogic's stockholders' equity	1,132,982	1,169,301	1,169,301
Noncontrolling interests	0	1,645	1,645
Total equity	1,132,982	1,170,946
Total liabilities and equity	$ 3,008,191	$ 3,029,827	$ 3,029,827