Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 27, 2015	Sep. 27, 2014	Jun. 28, 2014
Accounts receivable allowance for doubtful accounts	$ 18,573	$ 25,212	$ 29,221
Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares outstanding	11,908,317	12,437,307	12,308,802
Class A Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares outstanding	35,970,174	36,887,311	36,479,590
Class B Stock [Member]
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, shares outstanding	1,652,262	1,652,262	1,652,262