Share-Based Compensation Plans Share-Based Compensation Plans - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Outstanding at beginning of year	2,000	9,250	78,250
Weighted Average Exercise Price, Outstanding at beginning of year	$ 6.12	$ 5.15	$ 5.60
Shares, Forfeited or expired	(1,000)	(3,750)	(6,500)
Weighted Average Exercise Price, Forfeited or expired	$ 6.01	$ 4.70	$ 5.21
Shares, Exercised	(1,000)	(3,500)	(62,500)
Weighted Average Exercise Price, Exercised	$ 6.23	$ 5.07	$ 5.71
Shares, Outstanding at end of year	0	2,000	9,250
Weighted Average Exercise Price, Outstanding at end of year	$ 0.00	$ 6.12	$ 5.15