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Note 4 - Other Intangible Assets (Details) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 5,365 | $ 5,318
Accumulated Amortization | (2,664) | (2,338)
Net Carrying Amount | 2,701 | 2,980
Patents [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 546 | 514
Accumulated Amortization | (169) | (155)
Net Carrying Amount | 377 | 359
Patents [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 8 years |
Patents [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 18 years |
Computer Software, Intangible Asset [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 3 years |
Gross Carrying Amount | 394 | 379
Accumulated Amortization | (305) | (258)
Net Carrying Amount | 89 | 121
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 1 year 73 days |
Gross Carrying Amount | 265 | 265
Accumulated Amortization | (252) | (174)
Net Carrying Amount | 13 | 91
Customer Contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 6 months |
Gross Carrying Amount | 790 | 790
Accumulated Amortization | (790) | (790)
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Lives (Years) | 12 years |
Gross Carrying Amount | 3,370 | 3,370
Accumulated Amortization | (1,148) | (961)
Net Carrying Amount | $ 2,222 | $ 2,409

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Balance Type: | credit
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration