Consolidated Balance Sheets (Parentheticals) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Allowance for doubtful accounts	$ 125,000	$ 25,000
Property and equipment, accumulated depreciation	70,440	32,562
Intangible assets, accumulated amortization	$ 10,639	$ 9,244
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0005	$ 0.0005
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, issued (in shares)	67,588,504	67,588,504
Common stock, outstanding (in shares)	67,588,504	67,588,504