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Statements of Operations (Unaudited) (USD $)	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Income Statement [Abstract]
Sales, net	$ 7,316,667	$ 4,572,702
Cost of goods sold	4,698,057	2,734,583
Gross profit	2,618,610	1,838,119
Selling, general and administrative expenses	1,722,673	1,285,901
Operating income	895,937	552,218
Other income, net	6,880	35,899
Income before provision for income taxes	902,817	588,117
Provision for income taxes	295,000	180,000
Net income	$ 607,817	$ 408,117
Basic and diluted earnings per common share	$ 0.18	$ 0.13

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Total costs related to goods produced and sold during the reporting period.

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