Debt (Details Textual) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2015	Dec. 30, 2014
Debt (Textual) [Abstract]
Borrowing capacity available under our revolving line of credit		$ 110,000	$ 110,000
Long-term Debt		592,302	$ 595,421
Credit Agreement Period			95 days
Revolving Facility ($110 million)
Debt (Textual) [Abstract]
Borrowing capacity available under our revolving line of credit		90,900
Outstanding letters of credit		19,100
Long-term Debt	[1]		$ 0
Maximum [Member]
Debt (Textual) [Abstract]
Expected Payment of Long Term Debt		7,000
Minimum [Member]
Debt (Textual) [Abstract]
Expected Payment of Long Term Debt		$ 5,000

[1] The Company had $90.9 million of borrowing capacity available under its revolving credit facility (“Revolving Facility”), net of $19.1 million of outstanding letters of credit at June 30, 2015 and at December 30, 2014.