Note 9 - Share-based Compensation (Tables)

3 Months Ended

Jun. 30, 2015

Notes Tables

Schedule of Share-based Compensation Shares Authorized Available and Outstanding by Plan [Table Text Block]

	As of June 3 0 , 201 5
	Authorized		Available		Outstanding
2014 Plan		350,000		333,439		—
2005 Plan		2,075,000		400,318		1,419,716
2004 Directors Plan		—		—		12,000
Total		2,425,000		733,757		1,431,716

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

Option Activity	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding at March 31, 2015		1,433,216		$	4.08		6.4	$	6,221,909
Granted		—		$	—
Exercised		—		$	—
Forfeited		(1,500	)	$	5.84
Outstanding at June 30, 2015		1,431,716		$	4.08		6.2	$	7,721,341
Exercisable at March 31, 2015		818,800		$	3.73		5.8	$	4,703,645

Schedule of Nonvested Share Activity [Table Text Block]

Nonvested Options	Shares			Weighted Average Grant-Date Fair Value
Nonvested at March 31, 2015		614,416		$	3.25
Granted		—			—
Vested		—			—
Forfeited		(1,500	)		4.04
Nonvested at June 30, 2015		612,916		$	3.25

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

			Outstanding Options						Exercisable Options
Range of Exercise Prices			Number of Shares		Remaining Life (Years)		Weighted Average Price		Number of Shares		Weighted Average Price
$1.60	-	$3.70		395,820		5.2	$	2.93		395,820	$	2.93
$3.71	-	$4.42		695,396		6.2	$	3.82		291,480	$	3.82
$4.43	-	$5.40		117,500		7.6	$	5.00		41,000	$	5.18
$5.41	-	$7.08		223,000		7.1	$	6.42		90,500	$	6.23
Total stock options				1,431,716		6.2	$	4.08		818,800	$	3.73

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

	201 5
Exercise Price	$4.72
Volatility	64.00%
Risk Free Rate	1.74%
Vesting Period (years)	3
Forfeiture Rate	4.51%
Expected Life (in years)	5.73
Dividend Rate	0%