Note 6 - Product Warranty (Tables)

9 Months Ended

Sep. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended September 30,					Nine Months Ended September 30,
	2013			2012		2013			2012
Balance at beginning of period	$	65		$	50	$	50		$	50
Provisions		55			-		125			25
Warranty services provided, net		(25	)		-		(80	)		(25	)
	$	95		$	50	$	95		$	50