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Note 8 - Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Finite-lived intangible assets, gross | $ 531,504 | $ 500,289
Finite-lived intangible assets, accumulated amortization | (404,653) | (371,700)
Finite-lived intangible assets, net | 126,851 | 128,589
Indefinite-lived tradenames, gross | 128,321 | 128,321
Total intangible assets, gross | 659,825 | 628,610
Total intangible assets, net | $ 255,172 | 256,910
Trade Names [Member] |  |
Finite-lived intangible assets, useful life (Year) | 8 years |
Finite-lived intangible assets, gross | $ 50,742 | 43,252
Finite-lived intangible assets, accumulated amortization | (20,189) | (10,516)
Finite-lived intangible assets, net | $ 30,553 | 32,736
Customer Lists [Member] |  |
Finite-lived intangible assets, useful life (Year) | 9 years |
Finite-lived intangible assets, gross | $ 333,935 | 314,600
Finite-lived intangible assets, accumulated amortization | (288,623) | (275,287)
Finite-lived intangible assets, net | $ 45,312 | 39,313
Patents [Member] |  |
Finite-lived intangible assets, useful life (Year) | 14 years |
Finite-lived intangible assets, gross | $ 130,099 | 126,491
Finite-lived intangible assets, accumulated amortization | (82,038) | (72,719)
Finite-lived intangible assets, net | $ 48,061 | 53,772
Unpatented Technology [Member] |  |
Finite-lived intangible assets, useful life (Year) | 15 years |
Finite-lived intangible assets, gross | $ 13,169 | 13,169
Finite-lived intangible assets, accumulated amortization | (11,771) | (11,628)
Finite-lived intangible assets, net | $ 1,398 | 1,541
Computer Software, Intangible Asset [Member] |  |
Finite-lived intangible assets, useful life (Year) |  |
Finite-lived intangible assets, gross | $ 1,046 | 1,046
Finite-lived intangible assets, accumulated amortization | (1,046) | (1,042)
Finite-lived intangible assets, net |  | 4
Noncompete Agreements [Member] |  |
Finite-lived intangible assets, useful life (Year) | 7 years |
Finite-lived intangible assets, gross | $ 2,513 | 1,731
Finite-lived intangible assets, accumulated amortization | (986) | (508)
Finite-lived intangible assets, net | $ 1,527 | $ 1,223

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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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- 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=66006027&loc=d3e16323-109275 + 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=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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