Note 12 - Stock-based Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2014

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

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

	Number of Shares			Weighted Average Exercise Price
Options outstanding, January 1, 2013 (219,000 exercisable)		219,000		$	3.17
Granted		-			-
Exercised		(10,000	)		3.04
Canceled		(199,000	)		3.05
Options outstanding, December 31, 2013 (10,000 exercisable)		10,000			5.66
Granted		-			-
Exercised		-			-
Canceled		(10,000	)		5.66
Options outstanding, December 31, 2014		-			-

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

	Years Ended December 31,
	2014		2013
Cost of revenues	$	11	$	8
Selling expense		6		10
Engineering and product development expense		16		28
General and administrative expense		101		82
	$	134	$	128

Schedule of Nonvested Share Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Nonvested shares outstanding, January 1, 2013		108,750		$	1.63
Granted		127,500			3.62
Vested		(56,250	)		1.70
Forfeited		-			-
Nonvested shares outstanding, December 31, 2013		180,000			2.69
Granted		10,000			4.14
Vested		(83,125	)		2.31
Forfeited		(5,000	)		3.97
Nonvested shares outstanding, December 31, 2014		101,875			2.82