Business	9 Months Ended
Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business	Business CDI Corp. and its Subsidiaries (the “Company” or “CDI”) operate engineering and technology businesses providing differentiated, customer-focused solutions in select industries primarily in the United States (U.S.), Canada and the United Kingdom (UK). The Company provides engineering and information technology (IT) solutions and staffing services to customers in the Oil, Gas and Chemical (OGC), Aerospace and Industrial Equipment (AIE), and Hi-Tech industry verticals as well as in "Other" industry verticals that primarily include the infrastructure, U.S. defense, and transportation industries. On August 13, 2014, the Company announced the appointment of Scott J. Freidheim as president and chief executive officer, effective September 15, 2014. Mr. Freidheim and CDI entered into an employment agreement which was filed as Exhibit 10.1 to the Form 8-K on September 15, 2014.

Business

9 Months Ended

Sep. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

CDI Corp. and its Subsidiaries (the “Company” or “CDI”) operate engineering and technology businesses providing differentiated, customer-focused solutions in select industries primarily in the United States (U.S.), Canada and the United Kingdom (UK). The Company provides engineering and information technology (IT) solutions and staffing services to customers in the Oil, Gas and Chemical (OGC), Aerospace and Industrial Equipment (AIE), and Hi-Tech industry verticals as well as in "Other" industry verticals that primarily include the infrastructure, U.S. defense, and transportation industries.

On August 13, 2014, the Company announced the appointment of Scott J. Freidheim as president and chief executive officer, effective September 15, 2014. Mr. Freidheim and CDI entered into an employment agreement which was filed as Exhibit 10.1 to the Form 8-K on September 15, 2014.