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Stock-Based Compensation (Classification of Stock-Based Compensation) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2017
May 31, 2016
May 31, 2017
May 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 3,633 $ 6,293 $ 5,263 $ 13,231
Cost of maintenance and services [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense 294 180 551 376
Sales and marketing [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense 200 962 563 2,041
Product development [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense 1,158 2,397 1,054 5,077
General and administrative [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 1,981 $ 2,754 $ 3,095 $ 5,737