Note 6 - Goodwill and Intangible Assets - Intangible Assets, Net (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2018	Dec. 31, 2017
Gross carrying amount	$ 28,757	$ 28,757
Accumulated amortization	(6,493)	(5,777)
Intangible assets, net	25,161	22,980
Acquisitions	2,897
Trade Names [Member]
Gross carrying amount	15,425	15,425
Accumulated amortization
Intangible assets, net	17,525	15,425
Acquisitions	2,100
Customer Relationships [Member]
Gross carrying amount	13,332	13,332
Acquisitions	640
Accumulated amortization	(6,465)	(5,777)
Intangible assets, net	7,507	$ 7,555
Noncompete Agreements [Member]
Gross carrying amount
Acquisitions	157
Accumulated amortization	(28)
Intangible assets, net	$ 129

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 340
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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Represents the value of finite-lived and indefinite lived intangible assets acquired during the period.

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