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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Aug. 31, 2016
Aug. 31, 2016
Aug. 31, 2015
Income Tax [Line Items]      
Operating loss carryforwards $ 2,400 $ 2,400 $ 1,300
Net deferred tax asset 200 200 100
Operating loss carryforwards, valuation allowance 100 100 100
Tax credit carryforwards 2,038 2,038 2,040
Undistributed earnings of foreign subsidiaries 113,400 113,400  
Deferred tax liability not recognized. Undistributed earnings of foreign subsidiaries that may be repatriated $ 8,800 8,800  
Percentage of repatriation 90.00%    
Repatriation of foreign earnings $ 8,200    
Material interest or penalties included in income tax expense   0 0
Unrecognized tax benefits affected by the resolution of tax examinations or expiring statutes of limitation 400 400  
Foreign Tax Authority [Member]      
Income Tax [Line Items]      
Tax credit carryforwards $ 1,900 $ 1,900 $ 1,900