Note 11 - Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Year 1, operating leases	$ 7,284
Year 1, financing leases	318
Year 2, operating leases	7,529
Year 2, financing leases	327
Year 3, operating leases	7,433
Year 3, financing leases	336
Year 4, operating leases	7,122
Year 4, financing leases	345
Year 5, operating leases	6,934
Year 5, financing leases	355
2024 and thereafter, operating leases	159,455
2024 and thereafter, financing leases	3,472
Total lease payments, operating leases	195,757
Total lease payments, financing leases	5,153
Less imputed interest, operating leases	(115,093)
Less imputed interest, financing leases	(2,424)
Total present value of lease obligations, financing leases	2,729
Present value of current obligations, financing leases	(53)
Present value of long-term obligations, financing leases	2,676
Operating Lease, Liability, Current and Noncurrent, Gross [Member]
Total present value of lease obligations, operating leases	80,664
Operating Lease, Liability, Current, Gross [Member]
Present value of current obligations, operating leases	(1,897)
Operating Lease, Liability, Noncurrent, Gross [Member]
Present value of long-term obligations, operating leases	$ 78,767