Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Net sales	$ 7,998,319	$ 8,275,430	$ 15,204,345	$ 16,272,232
Cost of sales	4,899,404	5,062,472	9,394,582	10,057,176
Gross profit	3,098,915	3,212,958	5,809,763	6,215,056
Selling, general, and administrative expenses	2,565,282	2,686,401	5,024,386	5,381,268
Research and development expenses	274,379	412,861	540,646	769,208
Operating income	259,254	113,696	244,731	64,580
Interest income	118	14,600	447	15,515
Interest expense	(66,114)	(66,354)	(132,881)	(129,591)
Other income, net	6,885	10,237	14,238	15,746
Net other income (expense)	(59,111)	(41,517)	(118,196)	(98,330)
Income (loss) before income taxes	200,143	72,179	126,535	(33,750)
Income tax benefit (provision)	(59,160)	(25,845)	(36,696)	11,824
Net income (loss)	$ 140,983	$ 46,334	$ 89,839	$ (21,926)
Basic and diluted net income (loss) per common share	$ 0.06	$ 0.02	$ 0.04	$ (0.01)
Basic	2,537,737	2,558,533	2,537,733	2,575,405
Diluted	2,538,257	2,566,458	2,538,295	2,575,405