Stockholders' Equity - Stock Option Grants, Activity And Expense (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Feb. 28, 2019 USD ($) individual $ / shares shares	Feb. 28, 2018 USD ($) $ / shares shares
2009 Stock Option Plan
Granted (in shares)	0	0
Other Disclosures
Number of option holders | individual	27
Compensation expense for stock options
Compensation expense (benefit) | $	$ 90	$ 90
Related tax benefit (expense) | $	13	$ 13
Unrecognized compensation expense related to non-vested stock options that will be recognized during future periods
Balance of Fiscal 2018 | $	176
Fiscal 2019 | $	125
Fiscal 2020 | $	$ 32
Activity under the 2009 Stock Option Plan
Granted (in shares)	0	0
2009 Stock Option Plan
2009 Stock Option Plan
Expiration term	10 years
Number of options that may be exercised as stock appreciation rights	0
Activity under the 2009 Stock Option Plan
Outstanding at beginning of period (in shares)	224,001	333,762
Exercised (in shares)		(5,471)
Forfeited (in shares)	(1,749)	(19,779)
Outstanding at end of period (in shares)	222,252	308,512
Weighted Avg. Exercise Price
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 28.20	$ 29.22
Exercised (in dollars per share) | $ / shares		34.04
Forfeited (in dollars per share) | $ / shares	34.30	33.95
Outstanding at end of period (in dollars per share) | $ / shares	$ 28.15	$ 28.83