Note 10 - Deferred Compensation Plan - Summary of Deferred Compensation Plan 2 (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Deferred compensation plan liabilities, other long-term liabilities	$ 96,374	$ 103,954
Location, Statement of Financial Position, Balance [Axis]: us-gaap:EmployeeRelatedLiabilitiesCurrent
Deferred compensation plan liabilities, accrued compensation and related benefits	6,136	3,707
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Deferred compensation plan liabilities, other long-term liabilities	$ 96,374	$ 103,954