Note 16 - Share-Based Compensation (Details) - Stock Option Activity (USD $)	12 Months Ended
	Mar. 31, 2014
Stock Option Activity [Abstract]
Options outstanding, beginning of period	2,904,061
Options outstanding, beginning of period (in Dollars per share)	$ 1.93
Granted	841,511
Granted (in Dollars per share)	$ 3.25
Exercised	(206,674)
Exercised (in Dollars per share)	$ 1.70
Forfeited or expired	(379,159)
Forfeited or expired (in Dollars per share)	$ 2.11
Options outstanding, end of period	3,159,739
Options outstanding, end of period (in Dollars per share)	$ 2.28
Options exercisable, end of period	1,433,077
Options exercisable, end of period (in Dollars per share)	$ 2.04
Shares available for future grant, end of period	1,697,000