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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Income Taxes [Line Items]          
Operating loss carryforwards   $ 25,959      
Valuation allowance   3,815 $ 3,397    
Increase (decrease) in valuation allowance   (418) (2,780) $ (129)  
Total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate   1,600 1,800    
Unrecognized tax benefits   1,895 2,111 $ 2,359 $ 3,024
Balance of interest and penalties related to uncertain tax positions   $ 200 $ 200    
Federal statutory income tax rate   (21.00%) 25.70% 35.00%  
Income tax expense under GILTI provisions   $ 300      
Income tax (expense) benefit from effects of 2017 Tax Act     $ (1,654)    
One-time benefit from enactment     900    
One-time benefit from re-measuring net deferred tax liabilities     800    
One-time benefit from other enactment changes     200    
Income tax expense from repatriation of foreign earnings     100    
Operating loss carryforwards   34,608      
Jhana Education [Member]          
Income Taxes [Line Items]          
Valuation allowance       $ 200  
Increase (decrease) in valuation allowance     (100)    
Operating loss carryforwards       7,700  
Forecast [Member]          
Income Taxes [Line Items]          
Expect decrease in unrecognized tax benefit $ (200)        
2017 Tax Act [Member]          
Income Taxes [Line Items]          
Income tax (expense) benefit from effects of 2017 Tax Act   (100)      
United States - Federal Income Tax [Member]          
Income Taxes [Line Items]          
Operating loss carryforwards   8,600 9,700 16,400  
Operating loss carryforwards, provision adjustments     10,500    
Foreign [Member]          
Income Taxes [Line Items]          
Valuation allowance   700   400 $ 300
Increase (decrease) in valuation allowance     (200) 100  
Increase (decrease) in income tax benefit   $ 200 $ 200 (100)  
Additional Paid-in Capital [Member]          
Income Taxes [Line Items]          
Reduction of income tax expense in additional paid in capital       $ 168