Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share and Shareholders' Equity Shareholders' Equity (Details)

v3.20.2
Earnings per Share and Shareholders' Equity Shareholders' Equity (Details) - USD ($)
shares in Thousands
 3 Months Ended 9 Months Ended
May 31, 2020
May 31, 2019
May 31, 2020
May 31, 2019
Feb. 29, 2020
Aug. 31, 2019
Feb. 28, 2019
Aug. 31, 2018
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 336,282,000 $ 607,424,000 $ 336,282,000 $ 607,424,000 $ 354,365,000 $ 301,179,000 $ 585,630,000 $ 558,712,000
Net (loss) earnings (4,999,000) 32,418,000 (716,000) 17,719,000        
Other Comprehensive (Loss) Income, Net of Tax (6,586,000) (13,800,000) 51,289,000 20,693,000        
Stock Issued During Period, Value, Employee Benefit Plan 97,000 115,000 354,000 359,000        
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 0 0 0        
Stock Repurchased During Period, Value 9,715,000              
Payments for Repurchase of Common Stock 9,700,000   27,520,000 0        
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 3,184,000 3,091,000 12,814,000 10,253,000        
Stock Issued During Period, Value, Stock Options Exercised 0 206,000 2,631,000 993,000        
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation (147,000) (322,000) (4,210,000) (1,811,000)        
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 83,000 86,000 255,000 431,000        
Adoption of Accounting Standards 918,623,000   918,623,000     $ 915,466,000    
Revision of Prior Period, Accounting Standards Update, Adjustment [Member]                
Adoption of Accounting Standards $ 206,000 $ 75,000 $ 206,000 $ 75,000        
Common Stock [Member]                
Stock Issued During Period, Shares, New Issues 82,563 81,880 82,563 81,880 82,540 81,919 81,832 81,424
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 16,513,000 $ 16,374,000 $ 16,513,000 $ 16,374,000 $ 16,508,000 $ 16,384,000 $ 16,364,000 $ 16,285,000
Stock Issued During Period, Shares, Employee Benefit Plan 6 5 17 15        
Stock Issued During Period, Value, Employee Benefit Plan $ 1,000 $ 1,000 $ 3,000 $ 3,000        
Stock Issued During Period, Shares, Restricted Stock Award, Gross 13 28 462 366        
Stock Issued During Period, Value, Restricted Stock Award, Gross $ 3,000 $ 6,000 $ 93,000 $ 71,000        
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture 0 10 145 45        
Stock Issued During Period, Value, Stock Options Exercised $ 0 $ 2,000 $ 29,000 $ 9,000        
Stock Issued To Acquired For And Distributed From Rabbi Trust 4 5 20 30        
Stock Value Issued to Acquired For and Distributed From Rabbi Trust $ 1,000 $ 1,000 $ 4,000 $ 6,000        
Additional Paid-in Capital [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 192,928,000 177,584,000 192,928,000 177,584,000 189,716,000 181,213,000 174,418,000 167,448,000
Stock Issued During Period, Value, Employee Benefit Plan 96,000 114,000 351,000 356,000        
Stock Issued During Period, Value, Restricted Stock Award, Gross (3,000) (6,000) (93,000) (71,000)        
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 3,184,000 3,091,000 12,814,000 10,253,000        
Stock Issued During Period, Value, Stock Options Exercised 0 204,000 2,602,000 984,000        
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation (147,000) (322,000) (4,210,000) (1,811,000)        
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 82,000 85,000 251,000 425,000        
Treasury Stock [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (667,732,000) (617,731,000) (667,732,000) (617,731,000) (658,017,000) (640,212,000) (617,731,000) (617,731,000)
Stock Repurchased During Period, Value 9,715,000   27,520,000          
Retained Earnings [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 918,623,000 1,184,749,000 918,623,000 1,184,749,000 923,622,000 915,466,000 1,152,331,000 1,166,955,000
Net (loss) earnings (4,999,000) 32,418,000 (716,000) 17,719,000        
Retained Earnings [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]                
Adoption of Accounting Standards 3,873,000 75,000 3,873,000 75,000        
AOCI Attributable to Parent [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (124,050,000) (153,552,000) (124,050,000) (153,552,000) (117,464,000) (171,672,000) (139,752,000) (174,245,000)
Other Comprehensive (Loss) Income, Net of Tax (6,586,000) (13,800,000) 51,289,000 20,693,000        
AOCI Attributable to Parent [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]                
Adoption of Accounting Standards (3,667,000)   (3,667,000)          
Stock held in trust [member] [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (2,517,000) (3,075,000) (2,517,000) (3,075,000) (2,434,000) (3,070,000) (2,989,000) (2,450,000)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust (83,000) (86,000) 553,000 (625,000)        
Deferred Compensation, Share-based Payments [Member]                
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 2,517,000 3,075,000 2,517,000 3,075,000 $ 2,434,000 $ 3,070,000 $ 2,989,000 $ 2,450,000
Stock Value Issued to Acquired For and Distributed From Rabbi Trust $ 83,000 $ 86,000 $ (553,000) $ 625,000