CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 26,525,975	$ 24,577,126	$ 22,417,980
Cost of goods sold	3,124,710	3,049,811	3,014,886
Gross profit	23,401,265	21,527,315	19,403,094
Operating expenses
General and administrative	7,955,522	6,522,389	4,187,819
Research and development	2,851,150	2,151,257	2,415,123
Selling and marketing	20,210,541	18,121,732	15,238,600
Amortization	31,398	30,462	862,833
Total operating expenses	31,048,611	26,825,840	22,704,375
Operating loss	(7,647,346)	(5,298,525)	(3,301,281)
Other income (expense)
Interest income	8,464	22,095	46,039
Interest expense	(489)	0	(707)
Foreign currency exchange gain (loss)	(4,281)	(4,761)	1,573
Total other income (expenses)	3,694	17,334	46,905
Loss before income taxes	(7,643,652)	(5,281,191)	(3,254,376)
Income tax expense	65,506	71,899	50,770
Net loss	$ (7,709,158)	$ (5,353,090)	$ (3,305,146)
Basic and diluted net loss per share (in dollars per share)	$ (0.49)	$ (0.35)	$ (0.22)
Weighted average common shares outstanding:
Basic and diluted (in shares)	15,753,157	15,344,949	15,097,157