Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019
Income Statement [Abstract]
Net sales	$ 8,667,255	$ 8,085,849	$ 22,103,444	$ 24,957,943
Cost of goods sold	6,405,274	5,670,293	15,913,093	17,749,039
Gross profit	2,261,981	2,415,556	6,190,351	7,208,904
Operating expenses:
Selling and shipping expenses	583,984	717,399	1,814,955	2,011,634
General and administrative expenses	1,137,220	1,087,154	3,652,093	3,458,541
Depreciation and amortization	9,523	9,626	28,428	28,878
Total operating expenses	1,730,727	1,814,179	5,495,476	5,499,053
Income before other income (expense) and income taxes	531,254	601,377	694,875	1,709,851
Other income (expense):
Other income	562	242	21,540	245
Interest expense	(477)	(652)	(1,566)	(2,079)
Other income (expense)	85	(410)	19,974	(1,834)
Income before income taxes	531,339	600,967	714,849	1,708,017
Income taxes (benefit)	(157,526)	(78,304)	211,836	(126,683)
Net income	688,865	679,271	503,013	1,834,700
Dividends on preferred stock	2,500	2,500	5,000	5,000
Net income available to common shareholders	$ 686,365	$ 676,771	$ 498,013	$ 1,829,700
Net income per share available to common shareholders:
Basic (in Dollars per share)	$ 0.13	$ 0.13	$ 0.09	$ 0.35
Diluted (in Dollars per share)	$ 0.12	$ 0.12	$ 0.09	$ 0.33
Weighted Shares Outstanding:
Basic (in Shares)	5,405,733	5,309,335	5,355,281	5,280,735
Diluted (in Shares)	5,563,400	5,492,527	5,512,948	5,463,928