Consolidated Statements of Operations - USD ($)	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Income Statement [Abstract]
Net sales	$ 32,491,597	$ 32,372,030
Cost of goods sold	23,243,448	24,088,832
Gross profit	9,248,149	8,283,198
Operating expenses:
Selling and shipping expenses	2,702,742	2,649,456
General and administrative expenses	4,565,530	4,069,823
Depreciation and amortization	39,097	48,972
Total operating expenses	7,307,369	6,768,251
Income before other income and income taxes	1,940,780	1,514,947
Other (expense) income :
Interest expense	(2,688)	(15,728)
Other income including insurance recovery	730	603,367
Other income (expense):	(1,958)	587,639
Income before income taxes	1,938,822	2,102,586
Income (benefit) taxes	(96,033)	140,992
Net income	2,034,855	1,961,594
Dividends on preferred stock	5,000	5,000
Net income available to common shareholders	$ 2,029,855	$ 1,956,594
Net income per share available to common shareholders:
Basic	$ 0.38	$ 0.37
Diluted	$ 0.37	$ 0.37
Weighted Shares Outstanding:
Basic	5,295,393	5,226,604
Diluted	5,472,508	5,345,061