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Earnings per Share and Shareholders' Equity Shareholders Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Stock held in trust [member] [Member]
Deferred Compensation, Share-based Payments [Member]
Stock Issued During Period, Shares, New Issues   82,594            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 359,226 $ 16,519 $ 193,492 $ (667,732) $ 917,671 $ (100,724) $ (2,562) $ 2,562
Net (loss) earnings 4,598       4,598      
Other Comprehensive (Loss) Income, Net of Tax 1,629         1,629    
Stock Issued During Period, Shares, Employee Benefit Plan   6            
Stock Issued During Period, Value, Employee Benefit Plan 101 $ 1 100          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   20            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ 4 (4)          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2,581   2,581          
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation (275)   (275)          
Stock Issued To Acquired For And Distributed From Rabbi Trust   5            
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 86 $ 1 85       (81) 81
Stock Issued During Period, Shares, New Issues   82,625            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 367,946 $ 16,525 195,979 (667,732) 922,269 (99,095) (2,643) 2,643
Stock Issued During Period, Shares, New Issues   83,022            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 412,198 $ 16,604 202,971 (667,732) 953,339 (92,984) (3,067) 3,067
Adoption of Accounting Standards $ 953,339              
Stockholders' Equity Note Disclosure [Text Block]
The following table illustrates the changes in the balances of each component of shareholders' equity for the three months ended November 30, 2021 (in thousands):
 Common StockAdditional
Paid-in
Capital		Treasury
Stock		Retained
Earnings		Accumulated
Other
Comprehensive
Loss		Stock
Held in
Trust		Deferred
Compensation
Liability		Total
Shareholders’
Equity
 Issued
Shares		Amount
Balance at August 31, 202183,022 $16,604 $202,971 $(667,732)$953,339 $(92,984)$(3,067)$3,067 $412,198 
Net earnings— — — — 2,788 — — — 2,788 
Other comprehensive income, net of tax— — — — — (10,044)— — (10,044)
Stock contribution to employee benefit plans and other2 1 84 — — — — — 85 
Restricted stock awards67 17 (17)— — — — — — 
Stock based compensation expense— — 6,147 — — — — — 6,147 
Tax effect related to net share settlement of equity awards— — (1,393)— — — — — (1,393)
Stock issued to, acquired for and distributed from rabbi trust1 — 25 — — — (25)25 25 
Balance at November 31, 202183,092 $16,622 $207,817 $(667,732)$956,127 $(103,028)$(3,092)$3,092 $409,806 
The following table illustrates the changes in the balances of each component of shareholders' equity for the three months ended November 30, 2020 (in thousands):
 Common StockAdditional
Paid-in
Capital		Treasury
Stock		Retained
Earnings		Accumulated
Other
Comprehensive
Loss		Stock
Held in
Trust		Deferred
Compensation
Liability		Total
Shareholders’
Equity
 Issued
Shares		Amount
Balance at August 31, 202082,594 $16,519 $193,492 $(667,732)$917,671 $(100,724)$(2,562)$2,562 $359,226 
Net earnings— — — — 4,598 — — — 4,598 
Other comprehensive income, net of tax— — — — — 1,629 — — 1,629 
Stock contribution to employee benefit plans and other6 1 100 — — — — — 101 
Restricted stock awards20 4 (4)— — — — — — 
Stock based compensation expense— — 2,581 — — — — — 2,581 
Tax effect related to net share settlement of equity awards— — (275)— — — — — (275)
Stock issued to, acquired for and distributed from rabbi trust5 1 85 — — — (81)81 86 
Balance at November 30, 202082,625 $16,525 $195,979 $(667,732)$922,269 $(99,095)$(2,643)$2,643 $367,946 
              
Net (loss) earnings $ 2,788       2,788      
Other Comprehensive (Loss) Income, Net of Tax (10,044)         (10,044)    
Stock Issued During Period, Shares, Employee Benefit Plan   2            
Stock Issued During Period, Value, Employee Benefit Plan 85 $ 1 84          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   67            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ 17 (17)          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 6,147   6,147          
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation (1,393)   (1,393)          
Stock Issued To Acquired For And Distributed From Rabbi Trust   1            
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 25 $ 0 25       (25) 25
Stock Issued During Period, Shares, New Issues   83,092            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 409,806 $ 16,622 $ 207,817 $ (667,732) $ 956,127 $ (103,028) $ (3,092) $ 3,092
Adoption of Accounting Standards $ 956,127