Note 7 - Leases - Future Minimum Lease payments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
2019	$ 6,209	$ 12,206
2020	10,375	9,901
2021	9,858	9,716
2022	9,237	9,236
2023	9,250	8,936
Thereafter	136,608	115,788
Total minimum lease payments	181,537	165,783
Less imputed interest	(88,304)
Operating lease liabilities	$ 93,233	$ 0