Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue	$ 226,693	$ 246,821	$ 460,217	$ 504,279
Cost of services	184,598	200,174	374,847	410,862
Gross profit	42,095	46,647	85,370	93,417
Operating and administrative expenses	48,315	45,444	95,362	90,717
Charges	240	0	289	47
Loss on disposition	0	0	0	310
Operating profit	(6,460)	1,203	(10,281)	2,343
Other income (expense), net	(452)	(97)	(601)	(84)
Income before income taxes	(6,912)	1,106	(10,882)	2,259
Income tax expense	572	1,263	1,419	2,029
Net income	(7,484)	(157)	(12,301)	230
Less: Income attributable to the noncontrolling interest	0	0	0	(83)
Net income attributable to CDI	$ (7,484)	$ (157)	$ (12,301)	$ 313
Earnings per common share:
Basic (per share)	$ (0.39)	$ (0.01)	$ (0.63)	$ 0.02
Diluted (per share)	$ (0.39)	$ (0.01)	$ (0.63)	$ 0.02