Note 10 - Share-based Compensation (Tables)

9 Months Ended

Dec. 31, 2019

Notes Tables

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

	As of Dec ember 3 1, 2019
	Authorized		Available		Outstanding
2016 Plan		1,300,000		1,188,243		71,272
2014 Directors Plan		350,000		184,400		116,724
2005 Plan		—		—		239,300
2004 Directors Plan		—		—		12,000
Total		1,650,000		1,372,643		439,296

Share-based Payment Arrangement, Option, 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, 2019		539,800		$	4.06		4.7	$	15,480
Granted		—		$	—
Exercised		(2,112	)	$	2.08
Forfeited		(104,388	)	$	4.58
Expired		(120,000	)	$	3.53
Outstanding at December 31, 2019		313,300		$	4.11		3.2	$	—
Exercisable at December 31, 2019		263,300		$	4.32		2.1	$	—

Schedule of Nonvested Share Activity [Table Text Block]

Nonvested Options	Shares			Weighted Average Grant-Date Fair Value
Nonvested at March 31, 2019		130,000		$	1.70
Vested		(80,000	)		1.81
Nonvested at December 31, 2019		50,000		$	1.52

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Nonvested Restricted Stock Units	Shares			Weighted Average Grant Price
Nonvested restricted stock units at March 31, 2019		38,814		$	3.98
Granted		4,051			2.67
Vested		(16,149	)		3.71
Forfeited		(5,444	)		4.03
Nonvested restricted stock units at December 31, 2019		21,272		$	3.92