Note 13 - Commitments and Contingencies - Lease Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Right-of-use assets	$ 34,662	$ 37,866
Operating Lease, Liability	$ 55,334
Operating Lease, Weighted Average Remaining Lease Term	9 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	6.71%