Note 8 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Operating lease, 2020	$ 6,329
Finance lease, 2020	127
Operating lease, 2021	5,451
Finance lease, 2021	125
Operating lease, 2022	4,424
Finance lease, 2022	116
Operating lease, 2023	3,516
Finance lease, 2023	77
Operating lease, 2024	2,897
Finance lease, 2024	58
Operating lease, Thereafter	6,876
Finance lease, Thereafter	111
Operating lease, Total future minimum lease payments	29,493
Finance lease, Total future minimum lease payments	614
Operating lease, Less remaining imputed interest	(3,594)
Finance lease, Less remaining imputed interest	(63)
Operating lease, Total	25,899	$ 30,100
Finance lease, Total	$ 551