Note 8 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

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

	Three Months Ended March 31,
	2016		2015
Cost of revenues	$	3	$	3
Selling expense		1		1
Engineering and product development expense		2		2
General and administrative expense		33		24
	$	39	$	30

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		(5,000	)		2.94
Forfeited		-			-
Unvested shares outstanding, March 31, 2016		122,650			4.05

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	0.40
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 Exercise Price
Options outstanding, January 1, 2016 (none exercisable)		-	$	-
Granted		19,800		4.37
Vested		-		-
Forfeited		-		-
Options outstanding, March 31, 2016 (none exercisable)		19,800		4.37