Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,598	$ 2,598
Accumulated Amortization	1,263	914
Net Carrying Amount	1,335	1,684
Gross Carrying Amount	3,108	3,108
Net Carrying Amount	1,845	2,194
Trademarks [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	510	510
Net Carrying Amount	510	510
Customer Relationships [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	1,480	1,480
Accumulated Amortization	653	439
Net Carrying Amount	827	1,041
Patented Technology [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	590	590
Accumulated Amortization	297	233
Net Carrying Amount	293	357
Computer Software, Intangible Asset [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	135	115
Net Carrying Amount	135	155
Trade Names [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	140	140
Accumulated Amortization	60	33
Net Carrying Amount	80	107
Customer Backlog [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	70	70
Accumulated Amortization	70	70
Noncompete Agreements [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	48	48
Accumulated Amortization	48	24
Net Carrying Amount		$ 24