CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales	$ 3,674,354	$ 3,055,933	$ 7,664,565	$ 5,511,213
Cost of sales	2,191,127	1,586,698	4,319,707	2,959,598
Gross margin	1,483,227	1,469,235	3,344,858	2,551,615
Operating expenses:
Selling, general and administrative	667,874	692,631	1,466,696	1,450,675
Engineering, research and development	677,933	861,090	1,526,971	1,618,436
Total operating expenses	1,345,807	1,553,721	2,993,667	3,069,111
Income (loss) from operations	137,420	(84,486)	351,191	(517,496)
Other income (expense):
Amortization of debt discount	(13,396)	(8,745)	(26,791)	(14,514)
Amortization of debt expense	(27,080)	(6,018)	(54,160)	(6,018)
Change in fair value of common stock Warrants	104,891		(63,695)
Gain on sale of capital asset				3,600
Proceeds from life insurance policy			300,029
Interest income	101	101	194	148
Interest expense	(96,416)	(47,194)	(199,110)	(70,699)
Income (loss) before income taxes	105,520	(146,342)	307,658	(604,979)
Income tax expense (benefit)	2,204	(58,348)	285,137	(241,573)
Net income (loss)	$ 103,316	$ (87,994)	$ 22,521	$ (363,406)
Basic income (loss) per common share (in Dollars per share)	$ 0.04	$ (0.03)	$ 0.01	$ (0.14)
Diluted income (loss) per common share (in Dollars per share)	$ 0.04	$ (0.03)	$ 0.01	$ (0.14)
Weighted average shares outstanding:
Basic (in Shares)	2,650,063	2,622,415	2,648,608	2,619,038
Diluted (in Shares)	2,736,993	2,622,415	2,733,850	2,619,038