Note 12 - Deferred Compensation Plan - Summary of Deferred Compensation Plan (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Deferred compensation plan assets	$ 84,975	$ 78,381
Deferred compensation plan liabilities	87,649	81,287
Other Long-term Assets [Member]
Deferred compensation plan assets	84,975	78,381
Accrued Compensation and Related Benefits [Member]
Deferred compensation plan liabilities	7,534	384
Other Long-term Liabilities [Member]
Deferred compensation plan liabilities	80,115	80,903
Cash Surrender Value [Member]
Deferred compensation plan assets	26,047	23,545
Mutual Funds and Money Market Funds, Fair Value [Member]
Deferred compensation plan assets	$ 58,928	$ 54,836