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Consolidated Statements Of Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Treasury Stock [Member]
Total
Beginning balance, shares at Aug. 31, 2018 27,056,000         13,159,000  
Beginning balance at Aug. 31, 2018 $ 1,353 $ 211,280   $ 63,569 $ 341 $ (196,043)  
Issuance of common stock from treasury, shares           43,000  
Issuance of common stock from treasury   321       $ 654  
Purchase of treasury shares, shares           (1,000)  
Purchase of treasury shares           $ (12)  
Restricted share award, shares           28,000  
Restricted share award   (426)       $ 426  
Stock-based compensation   4,789          
Cumulative translation adjustments         (72)   $ (72)
Net income (loss)       (1,023)     $ (1,023)
Ending balance, shares at Aug. 31, 2019 27,056,000         13,087,000  
Ending balance at Aug. 31, 2019 $ 1,353 215,964 $ 3,143 59,403 269 $ (194,975)  
Issuance of common stock from treasury, shares           291,000  
Issuance of common stock from treasury   (3,138)       $ 4,184  
Purchase of treasury shares, shares           (400,000) (5,000)
Purchase of treasury shares           $ (13,971)  
Restricted share award, shares           21,000  
Restricted share award   (333)       $ 333  
Stock-based compensation   (573)          
Cumulative translation adjustments         372   $ 372
Net income (loss)       (9,435)     (9,435)
Ending balance, shares at Aug. 31, 2020 27,056,000         (13,175,000)  
Ending balance at Aug. 31, 2020 $ 1,353 211,920   49,968 641 $ (204,429) $ 59,453
Issuance of common stock from treasury, shares           405,000 432,564
Issuance of common stock from treasury   (5,213)       $ 6,286  
Purchase of treasury shares, shares           (147,000)  
Purchase of treasury shares           $ (2,971)  
Restricted share award, shares           28,000  
Restricted share award   (436)       $ 436  
Stock-based compensation   8,617          
Cumulative translation adjustments         68   $ 68
Net income (loss)       13,623     13,623
Ending balance, shares at Aug. 31, 2021 27,056,000         (12,889,000)  
Ending balance at Aug. 31, 2021 $ 1,353 $ 214,888   $ 63,591 $ 709 $ (200,678) $ 79,863