Selected Consolidated Quarterly Data (Unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Summation of quarterly data [Abstract]
Net Sales	$ 7,019,811	$ 6,666,905	$ 6,454,630	$ 6,384,629	$ 6,360,735	$ 6,398,675	$ 5,976,875	$ 5,840,841	$ 26,525,975	$ 24,577,126	$ 22,417,980
Gross Profit	6,218,043	5,888,499	5,710,405	5,593,318	5,579,080	5,620,408	5,235,033	5,092,794	23,401,265	21,527,315	19,403,094
Net Loss	$ (2,333,241)	$ (2,105,338)	$ (1,080,246)	$ (2,190,332)	$ (1,145,486)	$ (670,832)	$ (1,927,480)	$ (1,609,292)	$ (7,709,158)	$ (5,353,090)	$ (3,305,146)
Basic and Diluted Net Loss per Share (in dollars per share)	$ (0.15)	$ (0.13)	$ (0.07)	$ (0.14)	$ (0.07)	$ (0.04)	$ (0.26)	$ (0.11)	$ (0.49)	$ (0.35)	$ (0.22)