Note 4 - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Patents [Member]
Cost	$ 1,821	$ 1,719
Accumulated Amortization	(429)	(416)
Intangible assets, net	1,392	1,303
Trademarks and Trade Names [Member]
Cost	3,418	3,676
Accumulated Amortization	(727)	(644)
Intangible assets, net	2,691	3,032
Developed Technology Rights [Member]
Cost	6,314	6,843
Accumulated Amortization	(2,455)	(2,091)
Intangible assets, net	3,859	4,752
Customer Relationships [Member]
Cost	738	800
Accumulated Amortization	(287)	(245)
Intangible assets, net	451	555
Internally Developed Software [Member]
Cost	1,085	1,085
Accumulated Amortization	(127)	(46)
Intangible assets, net	958	1,039
Other Intangible Assets [Member]
Cost	214	255
Accumulated Amortization	(109)	(105)
Intangible assets, net	105	150
Cost	13,590	14,378
Accumulated Amortization	(4,134)	(3,547)
Intangible assets, net	$ 9,456	$ 10,831