Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Income Statement [Abstract]
Revenue	$ 1,104,958		$ 1,059,803		$ 926,289
Cost of services	885,549		834,502		732,326
Gross profit	219,409		225,301		193,963
Operating and administrative expenses	187,143		196,826		185,958
Restructuring and other related costs	0		8,100		0
Goodwill Impairment	0		0		8,312
Operating profit (loss)	32,266	[1],[2],[3]	20,375	[1],[2],[3]	(307)	[1],[2],[3]
Other income (expense), net	(251)		(245)		(540)
Equity in losses of affiliated companies	0		0		(2,299)
Income before income taxes	32,015		20,130		(3,146)
Income tax expense	12,582		5,130		7,668
Net income (loss)	19,433		15,000		(10,814)
Less: Income attributable to the noncontrolling interest	317		167		44
Net income (loss) attributable to CDI	$ 19,116		$ 14,833		$ (10,858)
Basic (in dollars per share)	$ 0.99		$ 0.77		$ (0.57)
Diluted (in dollars per share)	$ 0.97		$ 0.77		$ (0.57)

[1] In 2011, the Company recorded an aggregate pre-tax charge of $8.1 million to "Restructuring and other related costs" in the consolidated statement of operations. The following table summarizes the amount of restructuring and other related costs recognized during the year ended December 31, 2011, by reporting segment: 2011 GETS $4,467PSS 2,622MRI 372Corporate 639Restructuring and other related costs $8,100

[2] In 2011, the Company's PSS segment recorded a $9.7 million benefit related to the successful legal appeal of the UK OFT matter.

[3] In 2010, the Company's PSS segment recorded an $8.3 million goodwill impairment charge.