Condensed Statement of Operations and Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Net sales	$ 2,999,019	$ 3,831,222	$ 5,816,618	$ 7,808,722
Cost of goods sold	1,964,785	2,911,176	4,078,416	5,899,715
Gross profit	1,034,234	920,046	1,738,202	1,909,007
Operating expenses:
Selling	400,094	500,837	822,759	1,027,023
General and administrative	354,346	299,095	693,880	613,747
Research and development	213,606	321,595	472,118	582,005
Total	968,046	1,121,527	1,988,757	2,222,775
Operating profit (loss)	66,188	(201,481)	(250,555)	(313,768)
Other:
Interest income	17	41	26	81
Other, net	(15,797)	(8,803)	(32,126)	(9,584)
Total other income (expense), net	(15,780)	(8,762)	(32,100)	(9,503)
Income (loss) before income taxes	50,408	(210,243)	(282,655)	(323,271)
Income taxes (benefit)	1,016	617	1,527	1,857
Net income (loss)	49,392	(210,860)	(284,182)	(325,128)
Other comprehensive income (loss):
Foreign currency translation adjustments	1,896	(1,540)	(8,059)	5,006
Unrealized gain (loss) for the period	(24,000)	(7,200)	(11,200)	920
Net comprehensive income (loss)	$ 27,288	$ (219,600)	$ (303,441)	$ (319,202)
Basic and diluted net income (loss) per share	$ 0.01	$ (0.03)	$ (0.04)	$ (0.05)
Weighted average common and common equivalent shares:
Basic and diluted	6,973,704	6,973,704	6,973,704	6,973,704