Stockholders' Equity - Range Of Exercise Prices (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Nov. 30, 2020 USD ($) $ / shares shares
Vested options
2009 Stock Option Plan
Outstanding at ending of the year (in shares) | shares	99,980
Weighted Avg. Exercise Price (in dollars per share)	$ 28.49
Weighted Avg. Remaining Contractual Life	5 years 3 months 18 days
Total Intrinsic Value | $	$ 4,276
2009 Stock Option Plan
2009 Stock Option Plan
Outstanding at ending of the year (in shares) | shares	246,150
Weighted Avg. Exercise Price (in dollars per share)	$ 36.06
Weighted Avg. Remaining Contractual Life	7 years 1 month 6 days
Total Intrinsic Value | $	$ 8,665
$23.00-$28.00 | 2009 Stock Option Plan
2009 Stock Option Plan
Exercise prices, low end of range (in dollars per share)	$ 23.00
Exercise prices, high end of range (in dollars per share)	$ 28.00
Outstanding at ending of the year (in shares) | shares	106,304
Weighted Avg. Exercise Price (in dollars per share)	$ 26.80
Weighted Avg. Remaining Contractual Life	5 years 3 months 18 days
Total Intrinsic Value | $	$ 4,726
$28.00-$32.00 | 2009 Stock Option Plan
2009 Stock Option Plan
Exercise prices, low end of range (in dollars per share)	$ 28.00
Exercise prices, high end of range (in dollars per share)	$ 32.00
Outstanding at ending of the year (in shares) | shares	16,616
Weighted Avg. Exercise Price (in dollars per share)	$ 30.08
Weighted Avg. Remaining Contractual Life	4 years 4 months 24 days
Total Intrinsic Value | $	$ 684
$32.00 - $47.00 | 2009 Stock Option Plan
2009 Stock Option Plan
Exercise prices, low end of range (in dollars per share)	$ 32.00
Exercise prices, high end of range (in dollars per share)	$ 47.00
Outstanding at ending of the year (in shares) | shares	123,230
Weighted Avg. Exercise Price (in dollars per share)	$ 44.84
Weighted Avg. Remaining Contractual Life	9 years 1 month 6 days
Total Intrinsic Value | $	$ 3,255