Note 1 - Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accumulated amortization	$ (11,835)	$ (8,059)
Total intangible assets	74,371	74,371
Trade Names [Member]
Trade names	$ 31,430	31,430
Customer Relationships [Member]
Weighted average life (Year)	12 years 255 days
Gross carrying amount	$ 41,530	41,530
Accumulated amortization	$ (11,246)	(7,733)
Noncompete Agreements [Member]
Weighted average life (Year)	5 years 146 days
Gross carrying amount	$ 1,411	1,411
Accumulated amortization	$ (589)	$ (326)