Note 8 - Concentrations - Revenue By Geographic Region (Details) - USD ($)	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Revenue	$ 28,326,196	$ 27,717,278	$ 30,584,088
UNITED STATES
Revenue	13,600,236	12,392,053	11,919,548
EMEA [Member]
Revenue	9,612,883	11,392,046	13,779,392
Asia Pacific [Member]
Revenue	4,200,934	3,113,484	4,318,209
Rest of World [Member]
Revenue	$ 912,143	$ 819,695	$ 566,939