Note 5 - Income Taxes (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 State and Local Jurisdiction [Member]	Mar. 31, 2014 Minimum [Member]	Mar. 31, 2014 Maximum [Member]
Note 5 - Income Taxes (Details) [Line Items]
Valuation Allowance, Deferred Tax Asset, Change in Amount			$ 20
Deferred Tax Assets, Valuation Allowance	1,017	1,037
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 125	$ 48
Open Tax Year				2011	2014