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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2019
May 31, 2019
Feb. 28, 2019
Aug. 31, 2018
Aug. 31, 2019
Aug. 31, 2018
Income Tax Contingency [Line Items]            
Effective income tax rate (11.00%)     16.00% 18.00% 21.00%
Income tax expense (benefit) $ (1,315)     $ 2,752 [1] $ 6,932 $ 10,928 [1]
Tax Treatment Of Intercompany Sale Of Intellectual Property            
Income Tax Contingency [Line Items]            
Income tax expense (benefit)   $ 2,500 $ 1,100      
Scenario, Adjustment            
Income Tax Contingency [Line Items]            
Income tax expense (benefit)         $ (3,600)  
[1] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.