Note 12 - Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Nov. 30, 2017	Nov. 30, 2016
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	25.00%
Defined Contribution Plan Minimum Threshold Percentage of Employee Contributions	4.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	1.00%
Defined Contribution Plan, Cost	$ 34,523	$ 37,606