Note 14 - Income Taxes (Details) - Activity Related to Unrecognized Tax Benefit (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Activity Related to Unrecognized Tax Benefit [Abstract]
Income taxes payable, beginning of period	$ 1,085	$ 1,061
Gross increases related to prior year tax positions	139	123
Gross increases related to current year tax positions	41	41
Decrease related to statute of limitations lapses	(140)	(140)
Income taxes payable, end of period	$ 1,125	$ 1,085