Earnings Per Share (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Numerator For Basic and Diluted Earnings Per Share
Income From Continuing Operations Attributable To CLGX Stockholders	$ 31,485	$ 475	$ 54,740	$ 11,313
Income from Discontinued Operations Attributable to CLGX Stockholders, Net of Tax	0	23,935	0	42,513
Net income attributable to CLGX	$ 31,485	$ 24,410	$ 54,740	$ 53,826
Denominator For Basic and Diluted Earnings Per Share
Weighted Average Shares For Basic Earnings Per Share	108,018	108,936	111,781	106,205
Diluted Effect Of Stock Options And Restricted Stock Units	623	780	705	841
Weighted Average Shares For Diluted Earnings Per Share	108,641	109,716	112,486	107,046
Earnings Per Share, Basic
Income from Continuing Operations Attributable to CLGX Stockholders	$ 0.29	$ 0.00	$ 0.49	$ 0.11
Income from discontinued operations attributable to CLGX stockholders, net of tax	$ 0.00	$ 0.22	$ 0.00	$ 0.40
Net income attributable to CLGX per share	$ 0.29	$ 0.22	$ 0.49	$ 0.51
Earnings Per Share, Diluted
Income from continuing operations attributable to CLGX stockholders	$ 0.29	$ 0.00	$ 0.49	$ 0.11
Income from discontinued operations attributable to CLGX stockholders, net of tax	$ 0.00	$ 0.22	$ 0.00	$ 0.40
Net income attributable to CLGX per share	$ 0.29	$ 0.22	$ 0.49	$ 0.51

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