Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 01, 2018	Dec. 01, 2017
Current assets:
Allowances for doubtful accounts	$ 9,869	$ 9,151
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	490,435	491,262
Treasury stock, shares	110,399	109,572