Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 246,821	$ 284,282	$ 504,279	$ 560,554
Cost of services	200,174	231,485	410,862	456,994
Gross profit	46,647	52,797	93,417	103,560
Operating and administrative expenses	45,444	46,107	90,717	91,815
Restructuring Charges	0	(298)	47	72
Loss on disposition	0	0	310	0
Operating profit	1,203	6,988	2,343	11,673
Other income (expense), net	(97)	8	(84)	(74)
Income before income taxes	1,106	6,996	2,259	11,599
Income tax expense	1,263	2,544	2,029	5,106
Net income	(157)	4,452	230	6,493
Less: Income attributable to the noncontrolling interest	0	25	(83)	29
Net income attributable to CDI	$ (157)	$ 4,427	$ 313	$ 6,464
Earnings per common share:
Basic (per share)	$ (0.01)	$ 0.23	$ 0.02	$ 0.33
Diluted (per share)	$ (0.01)	$ 0.22	$ 0.02	$ 0.33