Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 24, 2016	Dec. 26, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts and customer credits	$ 85,797	$ 86,986
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	34,613,547	34,863,396
Common stock, shares outstanding	34,613,547	34,863,396