Note 6 - Product Warranty (Tables)

6 Months Ended

Jun. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Balance at beginning of period	$	55		$	50		$	50		$	50
Provisions		41			25			70			59
Warranty services provided, net		(31	)		(25	)		(55	)		(59	)
	$	65		$	50		$	65		$	50