Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Aug. 30, 2013	Nov. 30, 2012
Current assets:
Allowances for doubtful accounts	$ 10,481	$ 12,643
Stockholders' equity:
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	2,000	2,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	900,000	900,000
Common stock, shares issued	600,834	600,834
Common stock, shares outstanding	501,806	494,132
Treasury stock, shares	99,028	106,702