CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]
Net sales	$ 5,344,188	$ 3,492,067	$ 14,964,932	$ 9,772,389
Cost of goods sold	776,538	604,566	2,245,440	1,709,731
Gross profit	4,567,650	2,887,501	12,719,492	8,062,658
Operating expenses
General and administrative	924,524	861,183	2,888,939	2,609,060
Research and development	586,439	423,794	1,499,070	1,296,431
Selling and marketing	3,902,952	2,871,456	11,366,969	6,877,402
Amortization	215,164	211,058	641,535	632,508
Total operating expenses	5,629,079	4,367,491	16,396,513	11,415,401
Operating loss	(1,061,429)	(1,479,990)	(3,677,021)	(3,352,743)
Other income (expense)
Interest income	14,268	21,135	45,818	52,762
Interest expense	0	(652)	(57)	(4,537)
Foreign currency exchange gain (loss)	(11,025)	503	(14,304)	12,867
Total other income (expenses)	3,243	20,986	31,457	61,092
Loss before income taxes	(1,058,186)	(1,459,004)	(3,645,564)	(3,291,651)
Income tax expense	9,352	8,927	31,768	28,260
Net loss	$ (1,067,538)	$ (1,467,931)	$ (3,677,332)	$ (3,319,911)
Basic and diluted loss per common share (in dollars per share)	$ (0.05)	$ (0.07)	$ (0.18)	$ (0.18)
Weighted average common shares outstanding:
Basic and diluted (in shares)	20,718,347	20,514,530	20,678,865	18,314,157