Note 10 - Leases - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating cash flows from finance leases	$ 266	$ 68
Operating cash flows from operating leases	1,826	2,276
Financing cash flows from finance leases	$ 52	$ 9
Finance leases, Weighted-average remaining lease term (Year)	13 years	14 years
Operating leases, Weighted-average remaining lease term (Year)	29 years	30 years
Finance leases, Weighted-average discount rate	9.80%	9.80%
Operating leases, Weighted-average discount rate	6.90%	6.90%