Earnings Per Share (Schedule of Calculation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2020
Earnings Per Share [Abstract]
Net income	$ 95,069	$ 78,420	$ 79,722
Weighted average shares outstanding (in shares)	43,475	43,916	44,886
Basic earnings per common share (in dollars per share)	$ 2.19	$ 1.79	$ 1.78
Diluted earnings per common share:
Net income	$ 95,069	$ 78,420	$ 79,722
Effect of dilution from common stock equivalents (in shares)	772	704	435
Diluted weighted average shares outstanding (in shares)	44,247	44,620	45,321
Diluted earnings per share (in dollars per share)	$ 2.15	$ 1.76	$ 1.76