Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenue	$ 244,662	$ 295,732	$ 748,941	$ 856,286
Cost of services	197,835	241,244	608,697	698,238
Gross profit	46,827	54,488	140,244	158,048
Operating and administrative expenses	46,853	46,006	137,570	137,821
Restructuring Charges	566	0	613	72
Impairment	21,537	0	21,537	0
Loss on disposition	0	0	310	0
Operating profit	(22,129)	8,482	(19,786)	20,155
Other income (expense), net	683	(133)	599	(207)
Income before income taxes	(21,446)	8,349	(19,187)	19,948
Income tax expense	(1,244)	2,908	785	8,014
Net income	(20,202)	5,441	(19,972)	11,934
Less: Income attributable to the noncontrolling interest	0	41	(83)	70
Net income attributable to CDI	$ (20,202)	$ 5,400	$ (19,889)	$ 11,864
Earnings per common share:
Basic (per share)	$ (1.03)	$ 0.28	$ (1.01)	$ 0.61
Diluted (per share)	$ (1.03)	$ 0.27	$ (1.01)	$ 0.60