Note 10 - Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
2019, finance leases	$ 7,810	[1]
2019, operating leases	3,391	[1]
2020, finance leases	22,559
2020, operating leases	12,025
2021, finance leases	17,928
2021, operating leases	10,097
2022, finance leases	14,114
2022, operating leases	8,974
2023, finance leases	8,850
2023, operating leases	7,611
2024 and beyond, finance leases	14,996
2024 and beyond, operating leases	31,424
Total lease payments, finance leases	86,257
Total lease payments, operating leases	73,522
Less: Imputed interest, finance leases	(8,185)
Less: Imputed interest, operating leases	(16,836)
Present value of lease liabilities, finance leases	78,072
Present value of lease liabilities, operating leases	$ 56,686

[1] Excluding the nine months ended September 30, 2019