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Note 1 - Organization and Significant Accounting Policies (Detail) - Summary of Intangible Asset Activity (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Intangible Assets Gross Carrying Amount | $ 9,108 | $ 8,827
Intangible Assets Accumulated Amortization | (4,270) | (3,385)
Intangible Assets Net Carrying Amount | 4,838 | 5,442
Minimum [Member] | Customer Lists [Member] |  |
Intangible Assets Gross Amortization Period | 3 years |
Minimum [Member] | Patents [Member] |  |
Intangible Assets Gross Amortization Period | 12 years |
Minimum [Member] | Noncompete Agreements [Member] |  |
Intangible Assets Gross Amortization Period | 5 years |
Minimum [Member] | Unpatented Technology [Member] |  |
Intangible Assets Gross Amortization Period | 7 years |
Maximum [Member] | Customer Lists [Member] |  |
Intangible Assets Gross Amortization Period | 15 years |
Maximum [Member] | Patents [Member] |  |
Intangible Assets Gross Amortization Period | 18 years |
Maximum [Member] | Noncompete Agreements [Member] |  |
Intangible Assets Gross Amortization Period | 6 years |
Maximum [Member] | Unpatented Technology [Member] |  |
Intangible Assets Gross Amortization Period | 8 years |
Customer Lists [Member] |  |
Intangible Assets Gross Carrying Amount | 4,567 | 4,567
Intangible Assets Accumulated Amortization | (2,186) | (1,779)
Intangible Assets Net Carrying Amount | 2,381 | 2,788
Trade Names [Member] |  |
Intangible Assets Gross Amortization Period | 8 years |
Intangible Assets Gross Carrying Amount | 351 | 351
Intangible Assets Accumulated Amortization | (175) | (132)
Intangible Assets Net Carrying Amount | 176 | 219
Patents [Member] |  |
Intangible Assets Gross Carrying Amount | 2,083 | 1,802
Intangible Assets Accumulated Amortization | (667) | (530)
Intangible Assets Net Carrying Amount | 1,416 | 1,272
Noncompete Agreements [Member] |  |
Intangible Assets Gross Carrying Amount | 376 | 376
Intangible Assets Accumulated Amortization | (313) | (237)
Intangible Assets Net Carrying Amount | 63 | 139
Unpatented Technology [Member] |  |
Intangible Assets Gross Carrying Amount | 1,731 | 1,731
Intangible Assets Accumulated Amortization | (929) | (707)
Intangible Assets Net Carrying Amount | $ 802 | $ 1,024

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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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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