Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue	$ 279,390	$ 272,474	$ 834,415	$ 791,849
Cost of services	224,670	214,732	668,482	622,817
Gross profit	54,720	57,742	165,933	169,032
Operating and administrative expenses	45,711	53,321	141,671	148,154
Operating profit	9,009	4,421	24,262	20,878
Other income (expense), net	(47)	(63)	(165)	(222)
Income before income taxes	8,962	4,358	24,097	20,656
Income tax expense	3,556	1,496	9,706	5,038
Net income	5,406	2,862	14,391	15,618
Less: Income attributable to the noncontrolling interest	57	48	267	128
Net income attributable to CDI	$ 5,349	$ 2,814	$ 14,124	$ 15,490
Earnings Per Share, Basic	$ 0.27	$ 0.15	$ 0.73	$ 0.81
Diluted net earnings attributable to CDI per share	$ 0.27	$ 0.15	$ 0.72	$ 0.80