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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2023
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Income Taxes [Line Items]          
Benefit (provision) for income taxes $ (8,088) $ (3,634) $ 7,548    
Income before income taxes 25,869 22,064 $ 6,075    
Effective income tax benefit rate     124.20%    
Tax expense for non-deductible executive compensation $ 900 $ 1,200      
Income tax rate 31.30% 16.50% (124.20%)    
Effective tax rate 21.00% 21.00% 21.00%    
Additional tax expense from increase in valuation allowance against deferred income tax assets     $ 11,300 $ 11,300  
GILTI tax benefit $ 200   300   $ 300
Operating loss carryforwards 17,993        
Reduced the valuation allowance by 372 $ 2,845 10,546    
Total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate 1,300 1,300      
Increase (decrease) in income tax expense due to interest and penalties related to uncertain tax positions 100 100      
Unrecognized tax benefits 1,618 1,597 1,594 $ 1,640  
Balance of interest and penalties related to uncertain tax positions 400 300      
Tax differential on income subject to both U.S. and foreign taxes 400        
Stock-Based Compensation Deductions [Member]          
Income Taxes [Line Items]          
Benefit (provision) for income taxes   $ 600      
United States – State And Local Income Tax [Member]          
Income Taxes [Line Items]          
Operating loss carryforwards $ 1,200        
Foreign Tax Authority [Member]          
Income Taxes [Line Items]          
Operating loss carryforwards     $ 800