CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 24,577,126	$ 22,417,980	$ 20,561,714
Cost of goods sold	3,049,811	3,014,886	3,036,967
Gross profit	21,527,315	19,403,094	17,524,747
Operating expenses
General and administrative	6,522,388	4,187,819	3,732,623
Research and development	2,151,257	2,415,123	1,905,366
Selling and marketing	18,121,732	15,238,600	15,296,217
Amortization	30,462	862,833	856,995
Total operating expenses	26,825,839	22,704,375	21,791,201
Operating loss	(5,298,524)	(3,301,281)	(4,266,454)
Other income (expense)
Interest income	22,095	46,039	60,072
Interest expense	0	(707)	(57)
Foreign currency exchange gain	(4,762)	1,573	3,780
Total other income (expenses)	17,333	46,905	63,795
Loss before income taxes	(5,281,191)	(3,254,376)	(4,202,659)
Income tax expense	71,899	50,770	47,712
Net loss	$ (5,353,090)	$ (3,305,146)	$ (4,250,371)
Basic and diluted net loss per share (in dollars per share)	$ (0.25)	$ (0.16)	$ (0.21)
Weighted average common shares outstanding:
Basic and diluted (in shares)	21,118,258	20,777,238	20,689,819