Note 14 - Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Foreign currency translation adjustment, net of taxes of ($302) at March 31, 2024 and ($276) at December 31, 2023	$ (20,199)	$ (16,423)
Unrealized gains on interest rate swap cash flow hedge, net of taxes of $0 at March 31, 2024 and $0 at December 31, 2023	4,300	3,960
Unrealized holding gains on marketable securities, net of taxes of ($7) at March 31, 2024 and ($7) at December 31, 2023	20	19
Unfunded SERP liability, net of taxes of $723 at March 31, 2024 and $718 at December 31, 2023	422	407
Accumulated other comprehensive loss	$ (15,457)	$ (12,037)