Note 13 - Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
2021, operating lease	$ 3,915
2021, finance lease	561
2022, operating lease	3,246
2022, finance lease	561
2023, operating lease	1,460
2023, finance lease	1,371
2024, operating lease	540
2024, finance lease	0
2025, operating lease	494
2025, finance lease	0
After 2025, operating lease	1,751
After 2025, finance lease	0
Total future minimum lease payments, operating lease	11,406
Total future minimum lease payments, finance lease	2,493
Less interest, operating lease	(548)
Less interest, finance lease	(22)
Present value of lease liabilities, operating lease	10,858	$ 11,905
Present value of lease liabilities	$ 2,471	$ 0