Note 7 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 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 June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Cost of revenues	$	2	$	3	$	5	$	6
Selling expense		2		1		3		4
Engineering and product development expense		3		5		5		11
General and administrative expense		24		24		48		53
	$	31	$	33	$	61	$	74

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		(13,125	)		3.15
Forfeited		-			-
Unvested shares outstanding, June 30, 2015		88,750			3.05