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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) Income, Net [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance, value at Aug. 31, 2016 | $ 251,567 | $ 18,713 | $ (277,238) | $ 57,338 | $ 466,926 | $ (14,172)
Beginning balance, shares at Aug. 31, 2016 |  | 18,713 | 8,083 |  |  |
Net earnings | 23,179 | $ 0 | $ 0 | 0 | 23,179 | 0
Other comprehensive (loss) income | 2,064 | 0 | 0 | 0 | 0 | 2,064
Total comprehensive income | 25,243 | 0 | 0 | 0 | 0 | 0
Cash dividends per share | (12,490) | 0 | 0 | 0 | (12,490) | 0
Issuance of common shares under share compensation plans, value | 2,385 | $ 67 | 0 | 2,318 | 0 | 0
Issuance of common shares under share compensation plans, shares |  | 67 |  |  |  |
Share-based compensation expense | 3,350 | $ 0 | 0 | 3,350 | 0 | 0
Ending balance, value at Aug. 31, 2017 | 270,055 | $ 18,780 | $ (277,238) | 63,006 | 477,615 | (12,108)
Ending Balance, shares at Aug. 31, 2017 |  | 18,780 | 8,083 |  |  |
Net earnings | 20,277 | $ 0 | $ 0 | 0 | 20,277 | 0
Other comprehensive (loss) income | (5,980) | 0 | 0 | 0 | 0 | (5,980)
Total comprehensive income | 14,297 | 0 | 0 | 0 | 0 | 0
Cash dividends per share | (13,006) | 0 | 0 | 0 | (13,006) | 0
Issuance of common shares under share compensation plans, value | 1,955 | $ 61 | 0 | 1,894 | 0 | 0
Issuance of common shares under share compensation plans, shares |  | 61 |  |  |  |
Share-based compensation expense | 3,565 | $ 0 | 0 | 3,565 | 0 | 0
Ending balance, value at Aug. 31, 2018 | 276,866 | $ 18,841 | $ (277,238) | 68,465 | 484,886 | (18,088)
Ending Balance, shares at Aug. 31, 2018 |  | 18,841 | 8,083 |  |  |
Net earnings | 2,172 | $ 0 | $ 0 | 0 | 2,172 | 0
Other comprehensive (loss) income | (1,234) | 0 | 0 | 0 | 0 | (1,234)
Total comprehensive income | 938 | 0 | 0 | 0 | 0 | 0
Cash dividends per share | (13,375) | 0 | 0 | 0 | (13,375) | 0
Issuance of common shares under share compensation plans, value | (947) | $ 29 | 0 | (976) | 0 | 0
Issuance of common shares under share compensation plans, shares |  | 29 |  |  |  |
Share-based compensation expense | 4,195 | $ 0 | 0 | 4,195 | 0 | 0
Cumulative impact of ASC/ASU adoption | ASC 606 [Member] | 532 | 0 | 0 | 0 | 532 | 0
Cumulative impact of ASC/ASU adoption | ASU 2018-02 [Member] | 0 | 0 | 0 | 0 | 525 | (525)
Ending balance, value at Aug. 31, 2019 | $ 268,209 | $ 18,870 | $ (277,238) | $ 71,684 | $ 474,740 | $ (19,847)
Ending Balance, shares at Aug. 31, 2019 |  | 18,870 | 8,083 |  |  |

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