Note 10 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Lease, Expense	$ 3,200	$ 3,100	$ 9,500	$ 8,800
Operating Lease, Payments	$ 2,500	$ 2,200	7,400	$ 6,800
Operating Lease, Impairment Loss			$ 187