Note 9 - Leases - Maturities of Lease liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Remainder of 2019, finance leases	$ 934
Remainder of 2019, operating leases	2,481
2020, finance leases	3,519
2020, operating leases	8,934
2021, finance leases	3,158
2021, operating leases	6,898
2022, finance leases	3,388
2022, operating leases	5,368
2023, finance leases	2,655
2023, operating leases	4,581
After 2023, finance leases	32,016
After 2023, operating leases	18,338
Total minimum lease payments, finance leases	45,670
Total minimum lease payments, operating leases	46,600
Interest component	(19,699)
Interest component	(8,388)
Present value of minimum lease payments, finance leases	25,971	$ 20,171
Operating Lease, Liability, Total	$ 38,212