Employee Benefit and Stock Plans (Stock Option Transactions) (Details) - $ / shares	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2020
Stock Options
Options outstanding at beginning of year (in shares)	1,674,393	2,462,714	4,163,481
Granted (in shares)	0	0	0
Exercised (in shares)	0	(788,321)	(1,694,767)
Cancelled (in shares)	0	0	(6,000)
Options outstanding at end of year (in shares)	1,674,393	1,674,393	2,462,714
Options exercisable at end of year (in shares)	1,674,393	1,674,393	2,462,714
Options available for grant at end of year (in shares)	3,260,585	4,096,427	4,888,526
Weighted Average Exercise Price
Options outstanding at beginning of year, Weighted Average Exercise Price in dollars per share (in dollars per share)	$ 15.56	$ 15.32	$ 13.00
Granted, Weighted Average Exercise Price (in dollars per share)	0	0	0
Exercised, Weighted Average Exercise Price (in dollars per share)	0	14.83	9.52
Cancelled, Weighted Average Exercise Price (in dollars per share)	0	0	45.16
Options outstanding at end of year, Weighted Average Exercise Price in dollars per share (in dollars per share)	15.56	15.56	15.32
Options exercisable at end of period, Weighted Average Exercise Price (in dollars per share)	$ 15.56	$ 15.56	$ 15.32