Note 14 - Equity Incentive Plan (Details Textual) - USD ($)	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Jan. 27, 2011
Share-based Payment Arrangement, Expense	$ 195,416	$ 197,243
Share-based Payment Arrangement, Expense, Tax Benefit	122,022	$ 157,529
Share-based Payment Arrangement, Amount Capitalized	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	9,556	7,332
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance	0	0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	0	0
Proceeds from Stock Options Exercised		$ 0
Non-qualified Stock Units to Non-employee Directors Annually or Upon Election [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,000		1,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		88,298
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	32,600	33,150
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	1,400	22,000
Restricted Stock [Member] | Employees, Directors, and Consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	56,750
Restricted Stock [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	9,000
Restricted Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	31,687