Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue	$ 274,398	$ 262,739	$ 555,025	$ 519,375
Cost of services	218,870	205,779	443,812	408,085
Gross profit	55,528	56,960	111,213	111,290
Operating and administrative expenses	47,664	43,256	95,960	94,833
Operating profit	7,864	13,704	15,253	16,457
Other income (expense), net	(80)	(116)	(118)	(159)
Income before income taxes	7,784	13,588	15,135	16,298
Income tax expense	2,713	1,572	6,150	3,542
Net income	5,071	12,016	8,985	12,756
Less: Income attributable to the noncontrolling interest	119	34	210	80
Net income attributable to CDI	$ 4,952	$ 11,982	$ 8,775	$ 12,676
Earnings Per Share, Basic	$ 0.26	$ 0.62	$ 0.46	$ 0.66
Diluted net earnings attributable to CDI per share	$ 0.25	$ 0.62	$ 0.45	$ 0.66