Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Assets
Allowance for accounts receivable (in dollars)	$ 2,690	$ 3,153
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	50,649,989	51,512,595
Common stock, shares outstanding	50,649,989	51,512,595
Accumulated other comprehensive losses (in dollars)	$ (10,414)	$ (11,659)