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CONSOLIDATED STATEMENTS OF EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Tax Benefit From Stock Based Compensation [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total
Balance at Aug. 31, 2015 $ 3 $ 403,168 $ 10,711 $ (101,512) $ 283,611 $ (29,397) $ 566,584
Balance (in shares) at Aug. 31, 2015 30,978,000         793,000  
Purchase of treasury stock $ (1,956) (1,956)
Purchase of treasury stock (in shares)           27,000  
Issuance of restricted stock award
Issuance of restricted stock award (in shares) 208,000            
Exercise of stock options 80 80
Exercise of stock options (in shares) 4,000            
Stock-based compensation 4,578 558 5,136
Dividend paid to stockholders (10,629) (10,629)
Dividends payable to stockholders (10,629) (10,629)
Net income 49,614 49,614
Other comprehensive income (loss) (11,231) (11,231)
Balance at Feb. 29, 2016 $ 3 407,826 11,269 (112,743) 311,967 $ (31,353) 586,969
Balance (in shares) at Feb. 29, 2016 31,190,000         820,000  
Balance at Aug. 31, 2016 $ 3 412,369 11,321 (103,951) 351,060 $ (32,731) $ 638,071
Balance (in shares) at Aug. 31, 2016 31,238,000         836,000 30,401,307
Purchase of treasury stock $ (1,941) $ (1,941)
Purchase of treasury stock (in shares)           24,000  
Issuance of restricted stock award
Issuance of restricted stock award (in shares) 23,000            
Forfeiture of restricted stock awards
Forfeiture of restricted stock awards (in shares) (2,000)            
Exercise of stock options 229 229
Exercise of stock options (in shares) 5,000            
Stock-based compensation 5,178 213 5,391
Dividend paid to stockholders (10,641) (10,641)
Dividends payable to stockholders (10,643) (10,643)
Net income 52,088 52,088
Other comprehensive income (loss) (860) (860)
Balance at Feb. 28, 2017 $ 3 $ 417,776 $ 11,534 $ (104,811) $ 381,864 $ (34,672) $ 671,694
Balance (in shares) at Feb. 28, 2017 31,264,000         860,000 30,404,645