Note 6 - Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill	$ 3,905	$ 8,205	$ 8,205
Tradenames	1,147	1,147
Indefinite-lived assets	5,052	9,352
Finite-lived intangible assets, gross	7,522	7,522
Finite-lived intangible assets, accumulated amortization	2,885	1,691
Finite-lived intangible assets, net	4,637	5,831
Customer Relationships [Member]
Finite-lived intangible assets, gross	6,895	6,895
Finite-lived intangible assets, accumulated amortization	2,380	1,395
Finite-lived intangible assets, net	4,515	5,500
Noncompete Agreements [Member]
Finite-lived intangible assets, gross	627	627
Finite-lived intangible assets, accumulated amortization	505	296
Finite-lived intangible assets, net	$ 122	$ 331