Summary of Significant Accounting Policies (Products and Services) (Details)	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
IT solutions and IT staffing revenue as a percentage of total revenue
Total revenue	100.00%	100.00%
IT solutions [Member]
IT solutions and IT staffing revenue as a percentage of total revenue
Total revenue	39.40%	39.50%
IT staffing [Member]
IT solutions and IT staffing revenue as a percentage of total revenue
Total revenue	60.60%	60.50%