Consolidated Balance Sheets (Parenthetical) - USD ($)	Nov. 30, 2019	Nov. 30, 2018
Allowance for doubtful accounts of accounts receivable	$ 132,221	$ 161,560
Accumulated depreciation and amortization on fixed assets	$ 2,305,724	$ 2,266,627
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	5,320,026	5,262,128
Common stock, shares outstanding	5,320,026	5,262,128
Series C Preferred Stock [Member]
Preferred stock, shares authorized	100,000	100,000
Preferred stock, shares issued	10,000	10,000
Preferred stock, shares outstanding	10,000	10,000
Preferred stock, liquidation preference per share	$ 5	$ 5
Series D Preferred Stock
Preferred stock, shares authorized	75,000	75,000
Preferred stock, shares issued
Preferred stock, shares outstanding