Note 7 - Patents (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	June 30, 2012			December 31, 2011
Patents and patent applications	$	1,366		$	1,366
Less accumulated amortization		(1,054	)		(1,016	)
Total patents and patent applications	$	312		$	350