Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 8,275,430	$ 8,199,347	$ 16,272,232	$ 16,118,635
Cost of sales	5,062,472	5,029,906	10,057,176	9,997,361
Gross profit	3,212,958	3,169,441	6,215,056	6,121,274
Selling, general, and administrative expenses	2,686,401	2,634,278	5,381,268	5,134,795
Research and development expenses	412,861	356,519	769,208	706,315
Operating income	113,696	178,644	64,580	280,164
Interest income	14,600	3,182	15,515	4,154
Interest expense	(66,354)	(75,798)	(129,591)	(153,467)
Other income, net	10,237	7,012	15,746	11,926
Net other income (expense)	(41,517)	(65,604)	(98,330)	(137,387)
Income (loss) before income tax provision	72,179	113,040	(33,750)	142,777
Income tax benefit (provision)	(25,845)	(45,201)	11,824	(57,926)
Net income (loss)	$ 46,334	$ 67,839	$ (21,926)	$ 84,851
Basic and diluted net income (loss) per common share	$ 0.00	$ 0.01	$ 0.00	$ 0.01
Basic	12,792,666	13,439,637	12,877,024	13,442,958
Diluted	12,832,290	13,444,000	12,877,024	13,450,878