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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Feb. 28, 2014
Nov. 30, 2013
Assets    
Allowance for accounts receivable (in dollars) $ 2,795 $ 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 51,350,598 51,512,595
Common stock, shares outstanding 51,350,598 51,512,595
Accumulated other comprehensive losses (in dollars) $ (11,285) $ (11,659)