Note 19 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 27,303	$ 22,383	$ 3,171
Gross increases - acquisitions	0	5,812	20,153
Gross decreases – dispositions	(1,590)	0	36
Gross decreases – current period tax positions	0	0	(3)
Gross increases – prior period tax positions	0	157	2
Gross decreases – prior period tax positions	(608)	(8)	(195)
Settlements with taxing authorities/lapse of statute of limitations	(1,785)	(1,041)	(781)
Balance	$ 23,320	$ 27,303	$ 22,383