Note 16 - Share-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Year ended March 31, 2014
	Number of options			Weighted average exercise price
Options outstanding, beginning of period		2,904,061		$	1.93
Granted		841,511			3.25
Exercised		(206,674	)		1.70
Forfeited or expired		(379,159	)		2.11
Options outstanding, end of period		3,159,739		$	2.28
Options exercisable, end of period		1,433,077		$	2.04
Shares available for future grant, end of period		1,697,000

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	Year ended March 31, 2014
	Shares			Weighted average grant date fair value
Unvested, beginning of period		574,865		$	1.73
Granted		434,640			3.35
Vested		(194,338	)		1.75
Forfeited		(113,198	)		1.76
Unvested, end of period		701,969		$	2.72

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended March 31, 2014				Year Ended March 31, 2013				Year Ended March 31, 2012
Expected life (in years)			5.0			5.0	-	6.5		5.0	-	6.5
Expected volatility		60.8	-	65.4%		64.3	-	70.1%			68%
Risk-free interest rate		0.76	-	1.55%		0.62	-	1.25%		0.80	-	2.24%
Expected dividend yield			0.0%				0.0 %				0.0%