Note 3 - Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Dec. 31, 2019
Goodwill			$ 3,905			$ 3,905
Tradenames					1,147	1,147
Indefinite-lived assets					1,147	5,052
Finite-lived intangible assets, gross					7,522	7,522
Finite-lived intangible assets, accumulated amortization					3,483	2,885
Finite-lived intangible assets, net					4,039	4,637
Beginning balance			3,905
Impairment charge	(3,905)	$ (2,600)	(3,905)	$ (2,600)
Ending balance
Customer Relationships [Member]
Finite-lived intangible assets, gross					6,895	6,895
Finite-lived intangible assets, accumulated amortization					2,873	2,380
Finite-lived intangible assets, net					4,022	4,515
Noncompete Agreements [Member]
Finite-lived intangible assets, gross					627	627
Finite-lived intangible assets, accumulated amortization					610	505
Finite-lived intangible assets, net					$ 17	$ 122