Note 8 - Equity (Tables)

9 Months Ended

Dec. 31, 2016

Notes Tables

Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period [Table Text Block]

	Three Months Ended				Nine Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
	(in thousands)				(in thousands)
Stock options		247		353		1,855		1,422
Restricted stock units		69		27		106		165
Total granted		316		380		1,961		1,587

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

	Period Ended
	December 31, 2016
	Three Months			Nine Months
Risk-free interest rate		1.86	%		1.28	%
Dividend yield		0	%		0	%
Expected volatility		58.10	%		52.75	%
Expected term in years		6.08			6.08
Weighted average fair value at grant date	$	1.11		$	0.91

	Period Ended
	December 31, 2015
	Three Months			Nine Months
Risk-free interest rate		1.84	%		1.79	%
Dividend yield		0	%		0	%
Expected volatility		52.83	%		50.51	%
Expected term in years		6.08			6.06
Weighted average fair value at grant date	$	1.66		$	2.15

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

	Options Outstanding					Restricted Stock Units Outstanding
	Number of shares (in th ousands)			Weighted average exercise price		Number of shares (in thousands)			Weighted average fair value
Outstanding at October 1, 2016		4,298		$	3.12		181		$	4.74
Granted		247		$	2.00		69		$	2.00
Exercised/Released		-		$	-		(75	)	$	3.11
Cancelled		(73	)	$	3.78		-		$	-
Outstanding at December 31, 2016		4,472		$	3.05		175		$	4.36
Vested and expected to vest		4,022		$	3.13

Schedule of Share-based Compensation, Shares Available for Grant [Table Text Block]

	Shares Available for Grant
	(in thousands)
Balance at October 1, 2016		998
Options:
Granted from approved plans		(247	)
Cancelled and available for grant		51
Restricted Stock Units:
Granted		(69	)
Balance at December 31, 2016		733

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Options Outstanding				Options Vested
Range of Exercise Prices per share			Number of Shares (in thousands)		Weighted- Average Remaining Contractual Life (in years)		Number of Shares (in thousands)		Weighted-Average Exercise Price per Share
$1.35	—	$1.35		106		9.45		-	$	-
$1.64	—	$1.64		2,000		9.15		-	$	-
$1.80	—	$2.00		578		9.61		22	$	1.83
$3.24	—	$3.99		318		8.70		128	$	3.46
$4.32	—	$4.32		655		8.57		233	$	4.32
$5.18	—	$6.61		754		7.53		468	$	6.25
$6.83	—	$6.83		50		7.14		50	$	6.83
$7.20	—	$7.20		5		2.16		5		7.20
$11.40	—	$11.40		5		1.64		5	$	11.40
$18.90	—	$18.90		1		0.87		1	$	18.90
$1.35	—	$18.90		4,472		8.79		912	$	5.33

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended				Nine Months Ended
	December 31, 2016		December 31, 2015		December 31, 2016		December 31, 2015
Cost of revenues	$	111	$	104	$	236	$	279
Research and development		66		70		181		198
Sales and marketing		160		264		512		770
General and administrative		294		221		938		621
Impact on net loss	$	630	$	659	$	1,867	$	1,868