Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,598	$ 2,598
Accumulated Amortization	1,715	1,360
Net Carrying Amount	883us-gaap_FiniteLivedIntangibleAssetsNet	1,238us-gaap_FiniteLivedIntangibleAssetsNet
Gross Carrying Amount	3,108	3,108
Accumulated Amortization	1,715	1,360
Net Carrying Amount	1,393	1,748
Trademarks [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	510	510
Net Carrying Amount	510	510
Customer Relationships [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	1,480	1,480
Accumulated Amortization	979	725
Net Carrying Amount	501	755
Accumulated Amortization	979	725
Patented Technology [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	590	590
Accumulated Amortization	346	307
Net Carrying Amount	244	283
Accumulated Amortization	346	307
Computer Software, Intangible Asset [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	169	142
Net Carrying Amount	101	128
Accumulated Amortization	169	142
Trade Names [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	140	140
Accumulated Amortization	103	68
Net Carrying Amount	37	72
Accumulated Amortization	103	68
Order or Production Backlog [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	70	70
Accumulated Amortization	70	70
Accumulated Amortization	70	70
Noncompete Agreements [Member]
Note 3 - Goodwill, Intangible and Long-lived Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	48	48
Accumulated Amortization	48	48
Accumulated Amortization	$ 48	$ 48

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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