Note 10 - Goodwill and Other Assets - Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets, Gross	$ 34,000	$ 34,000
Finite-Lived Intangible Assets, Accumulated Amortization	(2,923)	(1,462)
Finite-Lived Intangible Assets, Net	$ 31,077	32,538
Finite-Lived Intangible Asset, Useful Life (Month)	12 years 30 days
Trade Names [Member]
Finite-Lived Intangible Assets, Gross	$ 4,400	4,400
Finite-Lived Intangible Assets, Accumulated Amortization	(293)	(147)
Finite-Lived Intangible Assets, Net	$ 4,107	$ 4,253
Finite-Lived Intangible Asset, Useful Life (Month)	14 years	14 years 180 days
Noncompete Agreements [Member]
Finite-Lived Intangible Assets, Gross	$ 1,400	$ 1,400
Finite-Lived Intangible Assets, Accumulated Amortization	(280)	(140)
Finite-Lived Intangible Assets, Net	$ 1,120	$ 1,260
Finite-Lived Intangible Asset, Useful Life (Month)	4 years	4 years 180 days
Customer Relationships [Member]
Finite-Lived Intangible Assets, Gross	$ 28,200	$ 28,200
Finite-Lived Intangible Assets, Accumulated Amortization	(2,350)	(1,175)
Finite-Lived Intangible Assets, Net	$ 25,850	$ 27,025
Finite-Lived Intangible Asset, Useful Life (Month)	11 years	11 years 180 days