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Consolidated Statements Of Shareholders' Equity (USD $)
In Thousands, except Share data
Common Stock [Member]
Additional Paid-in Capital [Member]
Common Stock Warrants [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Treasury Stock [Member]
Total
Beginning balance at Aug. 31, 2009 $ 1,353 $ 183,436 $ 7,597 $ 13,980 $ 1,961 $ (139,323)  
Beginning balance, shares at Aug. 31, 2009 27,056,000         (10,080,000)  
Issuance of common stock from treasury, shares           56,000  
Issuance of common stock from treasury   (495)       783  
Purchase of treasury shares, shares           (5,000)  
Purchase of treasury shares           (29)  
Unvested share award, shares           61,000  
Unvested share award   (850)       850  
Share-based compensation   1,099          
Management stock loan payments, shares           (84,000)  
Management stock loan payments   664       (505)  
Non-qualified deferred compensation plan activity, shares           11,000  
Non-qualified deferred compensation plan activity   (60)       39  
Cumulative translation adjustments         1,053   1,053
Net income (loss)       (518)     (518)
Ending balance at Aug. 31, 2010 1,353 183,794 7,597 13,462 3,014 (138,185)  
Ending balance, shares at Aug. 31, 2010 27,056,000         (10,041,000)  
Issuance of common stock from treasury, shares           117,000  
Issuance of common stock from treasury   (1,276)       1,604  
Purchase of treasury shares, shares           (21,000)  
Purchase of treasury shares           (218)  
Unvested share award, shares           37,000  
Unvested share award   (526)       526  
Share-based compensation   2,788          
Exercise of common stock warrants and other warrant activity, shares           596,000  
Exercise of common stock warrants and other warrant activity   (5,894) (2,337)     8,229  
Management stock loan payments, shares           (76,000)  
Management stock loan payments   637       (637)  
Non-qualified deferred compensation plan activity, shares           2,000  
Non-qualified deferred compensation plan activity   (8)       8  
Cumulative translation adjustments         578   578
Net income (loss)       4,807     4,807
Ending balance at Aug. 31, 2011 1,353 179,515 5,260 18,269 3,592 (128,673) 79,316
Ending balance, shares at Aug. 31, 2011 27,056,000         (9,386,000)  
Issuance of common stock from treasury, shares           60,000  
Issuance of common stock from treasury   (358)       800  
Purchase of treasury shares, shares           (44,000) (41,085)
Purchase of treasury shares           (440) (400)
Unvested share award, shares           37,000  
Unvested share award   (514)       514  
Share-based compensation   3,835          
Management stock loan payments, shares           (32,000)  
Management stock loan payments   313       (313)  
Repurchases of share-based award   (249)          
Cumulative translation adjustments         (182)   (182)
Other   (8)          
Net income (loss)       7,841     7,841
Ending balance at Aug. 31, 2012 $ 1,353 $ 182,534 $ 5,260 $ 26,110 $ 3,410 $ (128,112) $ 90,555
Ending balance, shares at Aug. 31, 2012 27,056,000         (9,365,000)