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Condensed Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Treasury Stock [Member]
Capital In Excess Of Stated Value [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss, Net [Member]
Beginning balance, value at Aug. 31, 2019 $ 268,209 $ 18,870 $ (277,238) $ 71,684 $ 474,740 $ (19,847)
Beginning balance, shares at Aug. 31, 2019   18,870 8,083      
Net earnings 8,345 $ 0 $ 0 0 8,345 0
Other comprehensive income (loss) (250) 0 0 0 0 (250)
Total comprehensive income 8,095 0 0 0 0 0
Cash dividends per share (3,353) 0 0 0 (3,353) 0
Issuance of common shares under share compensation plans, net (1,111) $ 27 $ 0 (1,138) 0 0
Issuance of common shares under share compensation plans, net, shares   27 0      
Share-based compensation expense 1,160 $ 0 $ 0 1,160 0 0
Ending balance, value at Nov. 30, 2019 273,000 $ 18,897 $ (277,238) 71,706 479,732 (20,097)
Ending Balance, shares at Nov. 30, 2019   18,897 8,083      
Beginning balance, value at Aug. 31, 2020 298,518 $ 18,918 $ (277,238) 77,686 499,724 (20,572)
Beginning balance, shares at Aug. 31, 2020   18,918 8,083      
Net earnings 7,095 $ 0 $ 0 0 7,095 0
Other comprehensive income (loss) 1,395 0 0 0 0 1,395
Total comprehensive income 8,490 0 0 0 0 0
Cash dividends per share (3,477) 0 0 0 (3,477) 0
Repurchase of common stock 0 0 0 0 0 0
Issuance of common shares under share compensation plans, net (1,213) $ 30 $ 0 (1,243) 0 0
Issuance of common shares under share compensation plans, net, shares   30 0      
Share-based compensation expense 1,583 $ 0 $ 0 1,583 0 0
Ending balance, value at Nov. 30, 2020 $ 303,901 $ 18,948 $ (277,238) $ 78,026 $ 503,342 $ (19,177)
Ending Balance, shares at Nov. 30, 2020   18,948 8,083