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Consolidated Statements of Operations and Comprehensive Income - USD ($)	12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Income Statement [Abstract]
Net Sales	$ 9,724,553	$ 11,833,730
Cost of Goods Sold	5,230,559	6,195,953
Gross Profit	4,493,994	5,637,777
Operating Expenses
Research and product development	1,249,591	1,268,010
Marketing and selling	2,197,991	2,371,064
General and administrative	1,034,239	1,099,783
Real estate operations expense	160,440	158,629
Total Operating Expenses	4,642,261	4,897,486
Operating (Loss) Income	(148,267)	740,291
Other Income (Expense):
Interest Expense	(52,294)	(58,447)
Interest and Dividend Income	70,797	54,757
Other Income	206,096	5,851
Income Before Income Taxes	76,332	742,452
Income Tax (Benefit) Expense	(19,374)	194,723
Net Income	95,706	547,729
Other Comprehensive Income (Loss)
Net unrealized income (loss) on marketable securities	112,390	(70,140)
Comprehensive Income	$ 208,096	$ 477,589
Basic Earnings Per Share	$ 0.01	$ 0.04
Diluted Earnings Per Share	$ 0.01	$ 0.04
Weighted Average Shares - Basic	14,961,076	14,943,018
Weighted Average Shares - Diluted	15,018,282	15,029,601

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