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Business Segments and International Operations (Revenue from External Customers by Revenue Type) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Nov. 30, 2015
Aug. 31, 2015
May. 31, 2015
Feb. 28, 2015
Nov. 30, 2014
Aug. 31, 2014
May. 31, 2014
Feb. 28, 2014
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
Segment Reporting [Abstract]                      
Software licenses                 $ 130,250 $ 117,801 $ 122,312
Maintenance                 217,718 202,496 202,857
Professional services                 29,586 12,236 8,827
Total revenue $ 112,719 $ 94,637 $ 88,817 $ 81,381 $ 97,894 $ 79,274 $ 80,827 $ 74,538 $ 377,554 $ 332,533 $ 333,996