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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]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Stock held in trust [member] [Member]
Deferred Compensation, Share-based Payments [Member]
Treasury Stock, Common
Stock Issued During Period, Shares, New Issues   83,761            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 326,620 $ 16,752 $ 220,472 $ 1,011,112 $ (121,210) $ (3,484) $ 3,484 $ (800,506)
Net (loss) earnings 17,738     17,738        
Other Comprehensive (Loss) Income, Net of Tax 370       370      
Stock Issued During Period, Shares, Employee Benefit Plan   2            
Stock Issued During Period, Value, Employee Benefit Plan 51 $ 0 51          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   118            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ (23) (23)          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2,717   2,717          
Stock Issued To Acquired For And Distributed From Rabbi Trust   3            
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 90 $ 1 89     (92) 92  
Adjustments to Additional Paid in Capital, Other (2,025)   (2,025)          
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture   83            
Stock Issued During Period, Value, Stock Options Exercised 2,210 $ 17 2,193          
Treasury Stock, Value, Acquired, Cost Method (26,116)             26,116
Dividends, Cash 21     21        
Net (loss) earnings 35,555              
Other Comprehensive (Loss) Income, Net of Tax (837)              
Stock Issued During Period, Shares, New Issues   83,967            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 321,676 $ 16,793 223,474 1,028,871 (120,840) (3,576) 3,576 (826,622)
Net (loss) earnings 17,817     17,817        
Other Comprehensive (Loss) Income, Net of Tax (1,207)       (1,207)      
Stock Issued During Period, Shares, Employee Benefit Plan   1            
Stock Issued During Period, Value, Employee Benefit Plan 35   35          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   105            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ (21) (21)          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2,810   2,810          
Stock Issued To Acquired For And Distributed From Rabbi Trust   26            
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 263 $ 5 258     (201) 201  
Adjustments to Additional Paid in Capital, Other (953)   (953)          
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture   21            
Stock Issued During Period, Value, Stock Options Exercised 477 $ 5 472          
Treasury Stock, Value, Acquired, Cost Method (3,992)             3,992
Treasury Stock, Retired, Cost Method, Amount 0 $ 5,973   824,641       (830,614)
Treasury Stock, Shares, Retired   (29,867)            
Stock Issued During Period, Shares, New Issues   54,253            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 336,926 $ 10,851 226,075 222,047 (122,047) (3,777) 3,777 0
Stock Issued During Period, Shares, New Issues   54,235            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 391,979 $ 10,847 235,660 261,870 (116,398) (3,777) 3,777 0
Adoption of Accounting Standards 261,870              
Net (loss) earnings 21,723     21,723        
Other Comprehensive (Loss) Income, Net of Tax (9,676)       (9,676)      
Stock Issued During Period, Shares, Employee Benefit Plan   2            
Stock Issued During Period, Value, Employee Benefit Plan 91   91          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   186            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ (37) (37)          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 3,345   3,345          
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 0         3 (3)  
Adjustments to Additional Paid in Capital, Other (6,405)   (6,405)          
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture   87            
Stock Issued During Period, Value, Stock Options Exercised 1,328 $ 18 1,310          
Treasury Stock, Retired, Cost Method, Amount (4,379)     4,357        
Treasury Stock, Retired, Par Value Method, Amount       (22)        
Treasury Stock, Shares, Retired   (110)            
Dividends, Cash $ 3     3        
Stockholders' Equity Note Disclosure [Text Block]
The following table illustrates the changes in the balances of each component of shareholders' equity for the six months ended February 28, 2025 (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, 202454,235 $10,847 $235,660 $— $261,870 $(116,398)$(3,777)$3,777 $391,979 
Net earnings— — — — 21,723 — — — 21,723 
Other comprehensive loss, net of tax— — — — — (9,676)— — (9,676)
Stock contribution to employee benefit plans and other— 91 — — — — — 91 
Vesting of equity awards186 37 (37)— — — — — — 
Cash dividend ($0.04 per share)— — — — — — — 
Stock based compensation expense— — 3,345 — — — — — 3,345 
Stock option exercises87 18 1,310 — — — — — 1,328 
Tax effect related to net share settlement of equity awards— — (6,405)— — — — — (6,405)
Stock issued to, acquired for and distributed from rabbi trust— — — — — — (3)— 
Treasury stock repurchased and retired(110)(22)— — (4,357)— — — (4,379)
Balance at November 30, 202454,400 10,880 233,964 — 279,239 (126,074)(3,774)3,774 398,009 
Net earnings— — — — 20,901 — — — 20,901 
Other comprehensive loss, net of tax— — — — — (4,827)— — (4,827)
Stock contribution to employee benefit plans and other— 97 — — — — — 97 
Vesting of equity awards73 14 (14)— — — — — — 
Stock based compensation expense— — 2,841 — — — — — 2,841 
Stock option exercises37 — — — — — 38 
Tax effect related to net share settlement of equity awards— — (996)— — — — — (996)
Stock issued to, acquired for and distributed from rabbi trust90 — — — 199 (199)91 
Treasury stock repurchased and retired(220)(44)— — (10,132)— — — (10,176)
Balance at February 28, 202554,259 $10,852 $236,019 $— $290,008 $(130,901)$(3,575)$3,575 $405,978 
The following table illustrates the changes in the balances of each component of shareholders' equity for the six months ended February 29, 2024 (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, 202383,761 $16,752 $220,472 $(800,506)$1,011,112 $(121,210)$(3,484)$3,484 $326,620 
Net earnings— — — — 17,738 — — — 17,738 
Other comprehensive income, net of tax— — — — — 370 — — 370 
Stock contribution to employee benefit plans and other— 51 — — — — — 51 
Vesting of equity awards118 23 (23)— — — — — — 
Cash dividend ($0.04 per share)— — — — 21 — — — 21 
Treasury stock repurchases— — — (26,116)— — — — (26,116)
Stock based compensation expense— — 2,717 — — — — — 2,717 
Stock option exercises83 17 2,193 — — — — — 2,210 
Tax effect related to net share settlement of equity awards— — (2,025)— — — — — (2,025)
Stock issued to, acquired for and distributed from rabbi trust89 — — — (92)92 90 
Balance at November 30, 202383,967 16,793 223,474 (826,622)1,028,871 (120,840)(3,576)3,576 321,676 
Net earnings— — — — 17,817 — — — 17,817 
Other comprehensive loss, net of tax— — — — — (1,207)— — (1,207)
Stock contribution to employee benefit plans and other— 35 — — — — — 35 
Vesting of equity awards105 21 (21)— — — — — — 
Stock based compensation expense— — 2,810 — — — — — 2,810 
Stock option exercises21 472 — — — — — 477 
Tax effect related to net share settlement of equity awards— — (953)— — — — — (953)
Stock issued to, acquired for and distributed from rabbi trust26 258 — — — (201)201 263 
Treasury stock repurchases— — — (3,992)— — — — (3,992)
Treasury stock retired(29,867)(5,973)— 830,614 (824,641)— — — — 
Balance at February 29, 202454,253 $10,851 $226,075 $— $222,047 $(122,047)$(3,777)$3,777 $336,926 
             
Net (loss) earnings $ 42,624              
Other Comprehensive (Loss) Income, Net of Tax (14,503)              
Stock Issued During Period, Shares, New Issues   54,400            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 398,009 $ 10,880 233,964 279,239 (126,074) (3,774) 3,774 0
Net (loss) earnings 20,901     20,901        
Other Comprehensive (Loss) Income, Net of Tax (4,827)       (4,827)      
Stock Issued During Period, Shares, Employee Benefit Plan   2            
Stock Issued During Period, Value, Employee Benefit Plan 97   97          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   73            
Stock Issued During Period, Value, Restricted Stock Award, Gross 0 $ (14) 14          
APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2,841   2,841          
Stock Issued To Acquired For And Distributed From Rabbi Trust   2            
Stock Value Issued to Acquired For and Distributed From Rabbi Trust 91 $ 1 90     (199) (199)  
Adjustments to Additional Paid in Capital, Other $ (996)   (996)          
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture 2              
Stock Issued During Period, Value, Stock Options Exercised $ 38 $ 1 37          
Treasury Stock, Value, Acquired, Cost Method (10,176)              
Treasury Stock, Retired, Cost Method, Amount       10,132        
Treasury Stock, Retired, Par Value Method, Amount       (44)        
Treasury Stock, Shares, Retired   (220)            
Stock Issued During Period, Shares, New Issues   54,259            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 405,978 $ 10,852 $ 236,019 $ 290,008 $ (130,901) $ (3,575) $ 3,575 $ 0
Adoption of Accounting Standards $ 290,008