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CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - 9 months ended May 31, 2018 - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
Beginning balance at Aug. 31, 2017 $ 20 $ 150,692 $ 315,764 $ (28,075) $ (299,014) $ 139,387
Beginning balance, shares at Aug. 31, 2017 19,688,238       5,704,055 13,984,183
Issuance of common stock under share-based compensation plan, net of shares withheld for taxes   (1,602)       $ (1,602)
Issuance of common stock under share-based compensation plan, net of shares withheld for taxes, shares 41,470          
Stock-based compensation   3,674       3,674
Cash dividends ($1.57 per share)     (22,045)     (22,045)
Acquisition of treasury stock         $ (17,784) (17,784)
Acquisition of treasury stock, shares         145,006  
Foreign currency translation adjustment       3,273   3,273
Net income     43,578     43,578
Ending balance at May. 31, 2018 $ 20 152,953 337,169 $ (24,802) $ (316,798) $ 148,542
Ending balance, shares at May. 31, 2018 19,729,708       5,849,061 13,880,647
Cumulative effect of change in accounting principle   $ 189 $ (128)     $ 61