Basis of Presentation and Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Total revenue as reported and pro forma total revenue
Net revenue, Total	$ 133,996	$ 95,544	$ 266,831	$ 180,366
Basis Of Presentation (Textual) [Abstract]
Percentage of revenue recognised upon completion of all services under completed contract method			100.00%
As Reported
Total revenue as reported and pro forma total revenue
Net revenue, Total	133,996		266,831
Pro Forma
Total revenue as reported and pro forma total revenue
Net revenue, Total	$ 129,870		$ 261,539