Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts and customer credits	$ 85,569	$ 79,179
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	35,523,278	35,611,238
Common stock, shares outstanding	35,523,278	35,611,238