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Consolidated Statements Of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ (7,172) $ 7,016 $ 11,116
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 7,443 6,943 7,875
Amortization of capitalized curriculum development costs 3,745 3,865 4,093
Deferred income taxes (5,594) 1,854 3,665
Stock-based compensation expense 3,658 3,121 2,536
Impairment of assets     1,302
Excess tax expense (benefit) from stock-based compensation (168) 52 (137)
Increase (decrease) in contingent consideration liabilities (1,936) 1,538 35
Changes in assets and liabilities, net of effect of acquired business:      
Decrease (increase) in accounts receivable, net 164 (576) (4,355)
Decrease (increase) in inventories 1,583 (908) 2,239
Decrease in receivable from related party 1,421 820 620
Increase in prepaid expenses and other assets (4,861) (1,119) (2,010)
Increase (decrease) in accounts payable and accrued liabilities 676 2,264 (5,654)
Increase in deferred revenue 19,142 8,112 2,481
Increase (decrease) in income taxes payable/receivable (249) (316) 2,548
Decrease in other liabilities (495) (1) (164)
Net cash provided by operating activities 17,357 32,665 26,190
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchases of property and equipment (7,187) (3,993) (2,446)
Capitalized curriculum development costs (6,466) (2,236) (2,166)
Acquisition of businesses, net of cash acquired (7,272)   (262)
Acquisition of license rights (750)    
Net cash used for investing activities (21,675) (6,229) (4,874)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from line of credit borrowings 34,320 46,454  
Payments on line of credit borrowings (29,943) (46,454)  
Proceeds from term notes payable financing 10,000 15,000  
Principal payments on term notes payable (5,000) (937)  
Principal payments on financing obligation (1,662) (1,472) (1,302)
Purchases of common stock for treasury (5,431) (43,586) (14,427)
Payment of contingent consideration liability   (2,167)  
Income tax benefit (expense) recorded in paid-in capital 168 (52) 137
Proceeds from sales of common stock held in treasury 682 679 689
Net cash provided by (used for) financing activities 3,134 (32,535) (14,903)
Effect of foreign currency exchange rates on cash and cash equivalents (348) 321 (662)
Net increase (decrease) in cash and cash equivalents (1,532) (5,778) 5,751
Cash and cash equivalents at beginning of the year 10,456 16,234 10,483
Cash and cash equivalents at end of the year 8,924 10,456 16,234
Supplemental disclosure of cash flow information:      
Cash paid for income taxes 2,562 3,410 2,383
Cash paid for interest 2,314 2,231 2,130
Non-cash investing and financing activities:      
Purchases of property and equipment financed by accounts payable $ 697 $ 334 $ 134