Note 13 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Alternative Minimum Tax [Member]
Tax Credit Carryforward, Amount	$ 130,000
State and Local Jurisdiction [Member] | HAWAII
Operating Loss Carryforwards	$ 5,067,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%	34.00%	34.00%
Tax Credit Carryforward, Amount	$ 28,000
Operating Loss Carryforwards	$ 10,215,000