Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,598	$ 2,598
Accumulated Amortization	1,638	1,360
Net Carrying Amount	960	1,238
Gross Carrying Amount	3,108	3,108
Accumulated Amortization	1,638	1,360
Net Carrying Amount	1,470	1,748
Trademarks [Member]
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	510	510
Net Carrying Amount	510	510
Customer Relationships [Member]
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	1,480	1,480
Accumulated Amortization	927	725
Net Carrying Amount	553	755
Accumulated Amortization	927	725
Patented Technology [Member]
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	590	590
Accumulated Amortization	336	307
Net Carrying Amount	254	283
Accumulated Amortization	336	307
Computer Software, Intangible Asset [Member]
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	162	142
Net Carrying Amount	108	128
Accumulated Amortization	162	142
Trade Names [Member]
Note 3 - Goodwill and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	140	140
Accumulated Amortization	95	68
Net Carrying Amount	45	72
Accumulated Amortization	95	68
Order or Production Backlog [Member]
Note 3 - Goodwill and Intangible 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 and Intangible Assets (Details) - Intangible Assets [Line Items]
Gross Carrying Amount	48	48
Accumulated Amortization	48	48
Accumulated Amortization	$ 48	$ 48