Earnings per Share and Shareholders' Equity Shareholders Equity - USD ($) shares in Thousands, $ in Thousands | Total | Accounting Standards Update [Domain] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member]Accounting Standards Update [Domain] | AOCI Attributable to Parent [Member] | AOCI Attributable to Parent [Member]Accounting Standards Update [Domain] | Stock held in trust [member] [Member] | Deferred Compensation, Share-based Payments [Member] |
Stock Issued During Period, Shares, New Issues | | | 81,919 | | | | | | | | |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 301,179 | | $ 16,384 | $ 181,213 | $ (640,212) | $ 915,466 | | $ (171,672) | | $ (3,070) | $ 3,070 |
Net (loss) earnings | 4,283 | | | | | 4,283 | | | | | |
Other Comprehensive (Loss) Income, Net of Tax | 57,875 | | | | | | | 57,875 | | | |
Stock Issued During Period, Shares, Employee Benefit Plan | | | 11 | | | | | | | | |
Stock Issued During Period, Value, Employee Benefit Plan | 257 | | $ 2 | 255 | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | | | 449 | | | | | | | | |
Stock Issued During Period, Value, Restricted Stock Award, Gross | 0 | | $ 90 | (90) | | | | | | | |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 9,630 | | | 9,630 | | | | | | | |
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture | | | 145 | | | | | | | | |
Stock Issued During Period, Value, Stock Options Exercised | 2,631 | | $ 29 | 2,602 | | | | | | | |
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | (4,063) | | | (4,063) | | | | | | | |
Stock Issued To Acquired For And Distributed From Rabbi Trust | | | 16 | | | | | | | | |
Stock Value Issued to Acquired For and Distributed From Rabbi Trust | 172 | | $ 3 | 169 | | | | | | 636 | (636) |
Treasury Stock, Value, Acquired, Cost Method | (17,805) | | | | 17,805 | | | | | | |
Stock Issued During Period, Shares, New Issues | | | 82,248 | | | | | | | | |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 353,253 | | $ 16,450 | 187,772 | (658,017) | 921,460 | | (114,412) | | (3,157) | 3,157 |
Net (loss) earnings | 2,162 | | | | | 2,162 | | | | | |
Other Comprehensive (Loss) Income, Net of Tax | (3,052) | | | | | | | (3,052) | | | |
Stock Issued During Period, Shares, Employee Benefit Plan | | | 5 | | | | | | | | |
Stock Issued During Period, Value, Employee Benefit Plan | 126 | | $ 1 | 125 | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | | | 259 | | | | | | | | |
Stock Issued During Period, Value, Restricted Stock Award, Gross | 0 | | $ 52 | (52) | | | | | | | |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 3,093 | | | 3,093 | | | | | | | |
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture | | | 17 | | | | | | | | |
Stock Issued During Period, Value, Stock Options Exercised | 122 | | $ 3 | 119 | | | | | | | |
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | (1,425) | | | (1,425) | | | | | | | |
Stock Issued To Acquired For And Distributed From Rabbi Trust | | | 11 | | | | | | | | |
Stock Value Issued to Acquired For and Distributed From Rabbi Trust | 86 | | $ 2 | 84 | | | | | | 723 | (723) |
Stock Issued During Period, Shares, New Issues | | | 82,540 | | | | | | | | |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 354,365 | | $ 16,508 | 189,716 | (658,017) | 923,622 | | (117,464) | | (2,434) | 2,434 |
Adoption of Accounting Standards | | $ 206 | | | | | $ 3,873 | | $ (3,667) | | |
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 |
Adoption of Accounting Standards | $ 917,671 | | | | | | | | | | |
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 February 28, 2021 (in thousands): Common Stock Additional Treasury Retained Accumulated Stock Deferred Total Issued Amount Balance at November 30, 2020 82,625 $ 16,525 $ 195,979 $ (667,732) $ 922,269 $ (99,095) $ (2,643) $ 2,643 $ 367,946 Net earnings — — — — 3,182 — — — 3,182 Other comprehensive income, net of tax — — — — — 9,157 — — 9,157 Stock contribution to employee benefit plans and other 4 1 80 — — — — — 81 Vesting of restricted stock awards 235 47 (47) — — — — — — Stock based compensation expense — — 2,647 — — — — — 2,647 Tax effect related to net share settlement of equity awards — — (1,706) — — — — — (1,706) Stock issued to, acquired for and distributed from rabbi trust 15 3 83 — — — (353) 353 86 Balance at February 28, 2021 82,879 $ 16,576 $ 197,036 $ (667,732) $ 925,451 $ (89,938) $ (2,996) $ 2,996 $ 381,393 The following table illustrates the changes in the balances of each component of shareholders' equity for the three months ended February 29, 2020 (in thousands): Common Stock Additional Treasury Retained Accumulated Stock Deferred Total Issued Amount Balance at November 30, 2019 82,248 $ 16,450 $ 187,772 $ (658,017) $ 921,460 $ (114,412) $ (3,157) $ 3,157 $ 353,253 Net earnings — — — — 2,162 — — — 2,162 Other comprehensive income, net of tax — — — — — (3,052) — — (3,052) Stock contribution to employee benefit plans and other 5 1 125 — — — — — 126 Vesting of restricted stock awards 259 52 (52) — — — — — — Stock based compensation expense — — 3,093 — — — — — 3,093 Stock option exercises 17 3 119 — — — — — 122 Tax effect related to net share settlement of equity awards — — (1,425) — — — — — (1,425) Stock issued to, acquired for and distributed from rabbi trust 11 2 84 — — — 723 (723) 86 Balance at February 29, 2020 82,540 $ 16,508 $ 189,716 $ (658,017) $ 923,622 $ (117,464) $ (2,434) $ 2,434 $ 354,365 The following table illustrates the changes in the balances of each component of shareholders' equity for the six months ended February 28, 2021 (in thousands): Common Stock Additional Treasury Retained Accumulated Stock Deferred Total Issued Amount Balance at August 31, 2020 82,594 $ 16,519 $ 193,492 $ (667,732) $ 917,671 $ (100,724) $ (2,562) $ 2,562 $ 359,226 Net earnings — — — — 7,780 — — — 7,780 Other comprehensive income, net of tax — — — — — 10,786 — — 10,786 Stock contribution to employee benefit plans and other 10 2 180 — — — — — 182 Vesting of restricted stock awards 255 51 (51) — — — — — — Stock based compensation expense — — 5,227 — — — — — 5,227 Tax effect related to net share settlement of equity awards — — (1,981) — — — — — (1,981) Stock issued to, acquired for and distributed from rabbi trust 20 4 169 — — — (434) 434 173 Balance at February 28, 2021 82,879 16,576 $ 197,036 $ (667,732) $ 925,451 $ (89,938) $ (2,996) $ 2,996 $ 381,393 The following table illustrates the changes in the balances of each component of shareholders' equity for the six months ended February 29, 2020 (in thousands): Common Stock Additional Treasury Retained Accumulated Stock Deferred Total Issued Amount Balance at August 31, 2019 81,919 $ 16,384 $ 181,213 $ (640,212) $ 915,466 $ (171,672) $ (3,070) $ 3,070 $ 301,179 Net earnings — — — — 4,283 — — — 4,283 Other comprehensive income, net of tax — — — — — 57,875 — — 57,875 Stock contribution to employee benefit plans and other 11 2 255 — — — — — 257 Vesting of restricted stock awards 449 90 (90) — — — — — — Treasury stock repurchases — — — (17,805) — — — — (17,805) Stock based compensation expense — — 9,630 — — — — — 9,630 Stock option exercises 145 29 2,602 — — — — — 2,631 Tax effect related to net share settlement of equity awards — — (4,063) — — — — — (4,063) Stock issued to, acquired for and distributed from rabbi trust 16 3 169 — — — 636 (636) 172 Adoption of accounting standards — — — — 3,873 (3,667) — — 206 Balance at February 29, 2020 82,540 $ 16,508 $ 189,716 $ (658,017) $ 923,622 $ (117,464) $ (2,434) $ 2,434 $ 354,365 | | | | | | | | | | |
Net (loss) earnings | $ 7,780 | | | | | 7,780 | | | | | |
Other Comprehensive (Loss) Income, Net of Tax | 10,786 | | | | | | | 10,786 | | | |
Stock Issued During Period, Shares, Employee Benefit Plan | | | 10 | | | | | | | | |
Stock Issued During Period, Value, Employee Benefit Plan | 182 | | $ 2 | 180 | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | | | 255 | | | | | | | | |
Stock Issued During Period, Value, Restricted Stock Award, Gross | 0 | | $ 51 | (51) | | | | | | | |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 5,227 | | | 5,227 | | | | | | | |
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | (1,981) | | | (1,981) | | | | | | | |
Stock Issued To Acquired For And Distributed From Rabbi Trust | | | 20 | | | | | | | | |
Stock Value Issued to Acquired For and Distributed From Rabbi Trust | 173 | | $ 4 | 169 | | | | | | (434) | 434 |
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 |
Net (loss) earnings | 3,182 | | | | | 3,182 | | | | | |
Other Comprehensive (Loss) Income, Net of Tax | 9,157 | | | | | | | 9,157 | | | |
Stock Issued During Period, Shares, Employee Benefit Plan | | | 4 | | | | | | | | |
Stock Issued During Period, Value, Employee Benefit Plan | 81 | | $ 1 | 80 | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | | | 235 | | | | | | | | |
Stock Issued During Period, Value, Restricted Stock Award, Gross | 0 | | $ 47 | (47) | | | | | | | |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 2,647 | | | 2,647 | | | | | | | |
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | (1,706) | | | (1,706) | | | | | | | |
Stock Issued To Acquired For And Distributed From Rabbi Trust | | | 15 | | | | | | | | |
Stock Value Issued to Acquired For and Distributed From Rabbi Trust | 86 | | $ 3 | 83 | | | | | | (353) | 353 |
Stock Issued During Period, Shares, New Issues | | | 82,879 | | | | | | | | |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 381,393 | | $ 16,576 | $ 197,036 | $ (667,732) | $ 925,451 | | $ (89,938) | | $ (2,996) | $ 2,996 |
Adoption of Accounting Standards | $ 925,451 | | | | | | | | | | |