Note 7 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Three Months Ended March 31,
	2015		2014
Cost of revenues	$	3	$	3
Selling expense		1		3
Engineering and product development expense		2		6
General and administrative expense		24		29
	$	30	$	41

Schedule of Nonvested Share Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Unvested shares outstanding, January 1, 2015		101,875		$	2.82
Granted		-			-
Vested		(5,000	)		2.94
Forfeited		-			-
Unvested shares outstanding, March 31, 2015		96,875			2.96