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Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Numerator:    
Net income $ 134,257 $ 97,051
Less: Distributed earnings allocated to nonvested restricted stock (65) (63)
Less: Undistributed earnings allocated to nonvested restricted stock (584) (381)
Numerator for basic earnings per share 133,608 96,607
Add: Undistributed earnings allocated to nonvested restricted stock 584 381
Less: Undistributed earnings reallocated to nonvested restricted stock (566) (368)
Numerator for diluted earnings per share $ 133,626 $ 96,620
Denominator:    
Weighted average shares outstanding — basic (in shares) 88,285 91,716
Effect of dilutive securities: Share-based payments (in shares) 2,782 3,187
Weighted average shares outstanding — diluted (in shares) 91,067 94,903
Basic earnings (loss) per share (in dollars per share) $ 1.51 $ 1.05
Diluted earnings (loss) per share (in dollars per share) $ 1.47 $ 1.02
Antidilutive securities excluded from computation of earnings per share (in shares) 0 0