Note 10 - Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
2020, finance leases	$ 26,670
2020, operating leases	11,471
2021, finance leases	20,865
2021, operating leases	10,960
2022, finance leases	17,064
2022, operating leases	9,855
2023, finance leases	12,341
2023, operating leases	8,363
2024, finance leases	13,663
2024, operating leases	8,218
2024 and beyond, finance leases	13,678
2024 and beyond, operating leases	25,643
Total lease payments, finance leases	104,281
Total lease payments, operating leases	74,510
Less: Imputed interest, finance leases	(11,911)
Less: Imputed interest, operating leases	(16,841)
Present value of lease liabilities, finance leases	92,370
Present value of lease liabilities, operating leases	$ 57,669