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Business Segments and International Operations (Revenue from External Customers by Product) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
Segment Reporting [Abstract]        
Software licenses $ 28,787 $ 28,722 $ 52,742 $ 53,953
Maintenance 59,485 52,656 117,821 101,894
Professional services 7,846 7,439 15,036 14,351
Total revenue $ 96,118 $ 88,817 $ 185,599 $ 170,198