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SHARE-BASED COMPENSATION: Share-based Compensation Expense (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares awarded (shares) 3 1 51 67
Fair value of grants $ 251 $ 90 $ 4,250 $ 5,163
Total share-based compensation 3,424 3,301 10,654 10,678
Tax effect on share-based compensation (1,183) (1,159) (3,818) (3,848)
Net effect on net income 2,241 2,142 6,836 6,830
Cost of Revenue [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total share-based compensation 101 158 347 579
Selling, General and Administrative Expenses [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total share-based compensation $ 3,323 $ 3,143 $ 10,307 $ 10,099
Restricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares awarded (shares) 2 1 16 18
Fair value of grants $ 175 $ 90 $ 1,410 $ 1,364
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares awarded (shares) 1 0 35 49
Fair value of grants $ 76 $ 0 $ 2,840 $ 3,799