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Stock-Based Compensation (Classification of Stock-Based Compensation) (Details) - USD ($)
$ in Thousands
3 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 1,630 $ 6,937
Cost of maintenance and services [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock-based compensation expense 256 196
Sales and marketing [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock-based compensation expense 363 1,078
Product development [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock-based compensation expense (104) 2,679
General and administrative [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 1,115 $ 2,984