Note 5 - Leases - Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating leases, Remaining 2021	$ 1,288
Finance leases, Remaining 2021	554
Total, Remaining 2021	1,842
Operating leases, 2022	1,727
Finance leases, 2022	587
Total, 2022	2,314
Operating leases, 2023	1,730
Finance leases, 2023	333
Total, 2023	2,063
Operating leases, 2024	1,407
Finance leases, 2024	280
Total, 2024	1,687
Operating leases, 2025	1,205
Finance leases, 2025	29
Total, 2025	1,234
Operating leases, Thereafter	8,284
Finance leases, Thereafter
Total, Thereafter	8,284
Operating leases, total lease payments	15,641
Finance leases, total lease payments	1,783
Total, total lease payments	17,424
Operating leases, less: Interest	(5,419)
Finance leases, less: Interest	(133)
Total, less: Interest	(5,552)
Operating leases, present value of lease liabilities	10,222
Finance leases, present value of lease liabilities	1,650
Total, present value of lease liabilities	$ 11,872	$ 11,389