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Consolidated Statements Of Cash Flows(USD ($))
In Thousands, unless otherwise specified
 12 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ 7,841 $ 4,807 $ (518)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 5,698 7,107 7,429
Amortization of capitalized curriculum costs 1,816 1,639 2,083
Gain on sale of discontinued operation     (1,092)
Deferred income taxes 2,708 2,092 2,406
Share-based compensation cost 3,835 2,788 1,099
Loss on disposals of assets 36 101 75
Changes in assets and liabilities, net of effect of acquired business:      
Increase in accounts receivable, net (5,810) (1,288) (7,597)
Decrease in inventories 96 382 606
Increase in receivable from related party (1,349) (688) (3,059)
Decrease (incresae) in prepaid expenses and other assets (39) 2,128 (174)
Increase (decrease) in accounts payable and accrued liabilities (197) (3,534) 5,060
Increase in income taxes payable/receivable 587 65 699
Increase (decrease) in other long-term liabilities 340 44 7
Net cash provided by operating activities 15,562 15,643 7,024
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchases of property and equipment (2,279) (2,326) (1,384)
Capitalized curriculum development costs (2,113) (3,097) (712)
Acquisition of business, net of cash acquired   (5,411) (3,256)
Proceeds from sale of discontinued operation     3,350
Net cash used for investing activities (4,392) (10,834) (2,002)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from line of credit borrowings 8,523 67,462 54,705
Payments on line of credit borrowings (8,523) (76,994) (58,123)
Proceeds from notes payable financing   5,000 1,154
Payments on notes payable financing (2,292)   (1,096)
Principal payments on long-term debt and financing obligation (895) (673) (654)
Purchases of common stock for treasury (440) (218) (50)
Proceeds from sales of common stock held in treasury 435 328 288
Proceeds from management stock loan payments     159
Net cash used for financing activities (3,192) (5,095) (3,617)
Effect of foreign currency exchange rates on cash and cash equivalents 17 (182) 391
Net increase (decrease) in cash and cash equivalents 7,995 (468) 1,796
Cash and cash equivalents at beginning of the year 3,016 3,484 1,688
Cash and cash equivalents at end of the year 11,011 3,016 3,484
Supplemental disclosure of cash flow information:      
Cash paid for income taxes 2,330 1,825 428
Cash paid for interest 2,473 2,702 2,862
Non-cash investing and financing activities:      
Purchases of property and equipment financed by accounts payable $ 481 $ 143 $ 95