CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]
Net sales	$ 6,666,905	$ 6,398,675	$ 19,506,164	$ 18,216,391
Cost of goods sold	778,406	778,267	2,322,942	2,268,156
Gross profit	5,888,499	5,620,408	17,183,222	15,948,235
Operating expenses
General and administrative	2,283,333	1,194,882	5,148,998	5,166,255
Research and development	665,539	526,224	2,226,018	1,434,647
Selling and marketing	5,015,916	4,546,100	15,107,241	13,496,593
Amortization	7,584	7,873	24,136	22,347
Total operating expenses	7,972,372	6,275,079	22,506,393	20,119,842
Operating loss	(2,083,873)	(654,671)	(5,323,171)	(4,171,607)
Other income (expense)
Interest income	1,761	3,836	6,606	18,576
Interest expense	(250)	0	(250)	0
Foreign currency exchange gain (loss)	(2,038)	(506)	(3,317)	(4,540)
Total other income (expense)	(527)	3,330	3,039	14,036
Loss before income taxes	(2,084,400)	(651,341)	(5,320,132)	(4,157,571)
Income tax expense	20,938	19,491	55,785	50,033
Net loss	$ (2,105,338)	$ (670,832)	$ (5,375,917)	$ (4,207,604)
Basic and diluted net loss per common share (in dollars per share)	$ (0.10)	$ (0.03)	$ (0.25)	$ (0.20)
Weighted average common shares outstanding:
Basic and diluted (in shares)	21,663,924	21,258,736	21,683,892	21,035,874