CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Cash flows from operating activities:
Net income	$ 291,640	$ 117,792
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	54,167	43,048
Change in provision for losses on accounts receivable	2,730	21,521
Inventory reserve	24,780	3,006
Increase (decrease) in deferred rent liability	(108)	1,662
Changes in assets and liabilities:
Accounts receivable	(175,667)	(139,818)
Inventories	(24,457)	47,460
Prepaid expenses and other assets	(3,760)	104,744
Accounts payable and other accrued expenses	89,033	(65,211)
Accrued compensation	72,047	(26,180)
Net cash provided by operating activities	330,405	108,024
Cash flows from investing activities:
Increase in intangibles		(25,000)
Purchases of property and equipment	(65,186)	(39,473)
Net cash used in investing activities	(65,186)	(64,473)
Cash flows from financing activities:
Payments on line of credit or equipment loan	(43,000)	(11,726)
Net cash used in financing activities	(43,000)	(11,726)
Effect of exchange rate changes in cash	(81)	(440)
Net increase in cash and cash equivalents	222,138	31,385
Cash and cash equivalents at beginning of period	1,077,342	989,270
Cash and cash equivalents at end of period	1,299,480	1,020,655
Supplemental Disclosure of Cash-Flow Information:
Interest	308	522
Income taxes	$ 61,540	$ 1,680