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Business Combinations (Narrative) (Details) (USD $)
12 Months Ended 0 Months Ended 12 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Nov. 30, 2011
May 24, 2013
Rollbase [Member]
Nov. 30, 2013
Rollbase [Member]
Oct. 26, 2011
Corticon Technologies Inc [Member]
Business Acquisition [Line Items]            
Equity interests in Rollbase, Inc.       100.00%    
Total purchase consideration       $ 9,900,000    
Purchase consideration, cash       9,500,000    
Purchase consideration, contingent consideration       400,000    
Expected payout period       2 years    
Earn-out provision       5,000,000    
Expense recognized related to contingent earn-out provisions         1,900,000  
Goodwill 224,286,000 226,110,000 256,211,000 4,798,000    
Acquisition-related expenses 3,204,000 215,000 536,000      
Termination fee related to pre-existing license arrangement         1,000,000  
Purchase price           23,000,000
Goodwill (not deductible for tax purposes)           $ 19,427,000