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Divestiture Assets Held for Sale (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2012
Nov. 30, 2011
Assets:    
Accounts receivable $ 2,875  
Other current assets 100  
Goodwill 3,317  
Other long-term assets 439  
Total assets held for sale 6,731 0
Liabilities:    
Deferred revenue 5,265  
Total liabilities held for sale $ 5,265 $ 0