Note 8 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Cost of revenues	$	2	$	2	$	5	$	5
Selling expense		2		2		3		3
Engineering and product development expense		3		3		5		5
General and administrative expense		132		24		165		48
	$	139	$	31	$	178	$	61

Schedule of Nonvested Share Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Unvested shares outstanding, January 1, 2016		63,750		$	3.64
Granted		63,900			4.37
Vested		(35,625	)		3.92
Forfeited		-			-
Unvested shares outstanding, June 30, 2016		92,025			4.04

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

Risk-free interest rate	1.30	%
Dividend yield	0.00	%
Expected common stock market price volatility factor	.40
Weighted average expected life of stock options (years)	4

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

	Number of Shares		Weighted Average Grant Date Fair Value
Options outstanding, January 1, 2016 (none exercisable)		-	$	-
Granted		19,800		4.37
Vested		-		-
Forfeited		-		-
Options outstanding, June 30, 2016 (none exercisable)		19,800		4.37