Note 23 - Leases - Lessee's Total Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lease cost
Amortization of right-of-use assets	$ 3,273
Interest on lease liabilities	1,330
Operating lease cost	8,057
Variable lease cost	1,647
Short-term lease cost	0
Total lease cost	14,307
Operating cash flows for finance leases	1,330
Operating cash flows for operating leases	9,004
Financing cash flows for finance leases	3,164	$ 2,551	$ 1,871
Right-of-use assets obtained in exchange for new finance lease liabilities	5,262
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 6,364
Weighted-average remaining lease term — finance leases (in years) (Year)	4 years
Weighted-average remaining lease term — operating leases (in years) (Year)	7 years 3 months 18 days
Weighted-average discount rate (in percentage)	5.00%