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Note 6 - Intangible Assets - Acquired Intangible Assets (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($)
Amount | $ 54,438
Finite-Lived Intangible Asset, Useful Life | 15 years 109 days
Customer Lists and Relationships [Member] |
Amount | $ 32,322
Finite-Lived Intangible Asset, Useful Life | 17 years 292 days
Franchise Rights [Member] |
Amount | $ 2,449
Finite-Lived Intangible Asset, Useful Life | 5 years 73 days
Trademarks and Trade Names [Member] |
Amount | $ 4,615
Finite-Lived Intangible Asset, Useful Life | 5 years 182 days
Other Intangible Assets [Member] |
Amount | $ 15,052
Finite-Lived Intangible Asset, Useful Life | 14 years 292 days

X
- 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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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X
- Details
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Namespace Prefix: |
Data Type: | na
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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