Note 3 - Acquisitions - Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Sexton Acquisition [Member]
Total revenue	$ 34,524	$ 11,697	$ 85,189	$ 34,707
Net income (loss)	(685)	(1,850)	4,612	2,056
GCI Acquisition [Member]
Total revenue	33,800	21,204	106,427	58,056
Net income (loss)	$ 79	$ (3,393)	$ (1,939)	$ 4,912