Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator for basic and diluted net income per share:
Net income from continuing operations	$ 22,535	$ 30,828	$ 109,429	$ 84,722
(Loss)/income from discontinued operations, net of tax	(84)	(74)	(175)	2,421
Gain from sale of discontinued operations, net of tax	0	0	0	310
Net income	$ 22,451	$ 30,754	$ 109,254	$ 87,453
Denominator:
Weighted-average shares for basic income per share (in shares)	80,680	83,362	81,073	84,114
Dilutive effect of stock options and restricted stock units (in shares)	1,337	1,728	1,455	1,726
Weighted-average shares for diluted income per share (in shares)	82,017	85,090	82,528	85,840
Basic:
Net income from continuing operations (usd per share)	$ 0.28	$ 0.37	$ 1.35	$ 1.01
(Loss)/income from discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.03
Gain from sale of discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.00
Net income attributable to CoreLogic (usd per share)	0.28	0.37	1.35	1.04
Diluted:
Net income from continuing operations (usd per share)	0.27	0.36	1.33	0.99
(Loss)/income from discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.03
Gain from sale of discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.00
Net income attributable to CoreLogic (usd per share)	$ 0.27	$ 0.36	$ 1.33	$ 1.02
Antidilutive securities excluded from computation of earnings per share	100	100	100	80