Note 14 - Leases (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Operating Lease, Right-of-Use Asset	$ 53,436	$ 72,632
Operating Lease, Liability, Total	$ 55,896	$ 74,892
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 92,000
Operating Lease, Liability, Total			$ 92,000