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Segment Information (Reconciliation Of Adjusted EBITDA) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Segment Reporting Information [Line Items]      
Consolidated Adjusted EBITDA $ 7,699 $ 26,894 $ 31,858
Stock-based compensation (3,658) (3,121) (2,536)
Reduction (increase) to contingent consideration liability 1,936 (1,538) (35)
Costs to exit Japan publishing business (2,107)    
Contract termination costs (1,500)    
Restructuring costs (1,482) (776) (587)
ERP system implementation costs (1,404) (448)  
China office start-up costs (505) (222)  
Business acquisition costs (442)    
Impaired assets     (1,302)
Depreciation (3,879) (3,677) (4,142)
Amortization (3,538) (3,263) (3,727)
Income (loss) from operations (8,880) 13,849 19,529
Interest income 379 325 383
Interest expense (2,408) (2,263) (2,137)
Discount on related party receivable     (363)
Income (loss) before income taxes (10,909) 11,911 17,412
Benefit (provision) for income taxes 3,737 (4,895) (6,296)
Net income (loss) (7,172) 7,016 11,116
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Consolidated Adjusted EBITDA 16,177 34,783 36,948
Corporate And Eliminations [Member]      
Segment Reporting Information [Line Items]      
Consolidated Adjusted EBITDA $ (8,478) $ (7,889) $ (5,090)