Note 11 - Deferred Compensation Plan - Summary of Deferred Compensation Plan (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Deferred compensation plan assets	$ 91,811	$ 92,586
Deferred compensation plan liabilities	91,838	95,976
Other Long-term Assets [Member]
Deferred compensation plan assets	91,811	92,586
Accrued Compensation and Related Benefits [Member]
Deferred compensation plan liabilities	3,240	2,323
Other Long-term Liabilities [Member]
Deferred compensation plan liabilities	88,598	93,653
Cash Surrender Value [Member]
Deferred compensation plan assets	26,034	27,249
Mutual Funds and Money Market Funds, Fair Value [Member]
Deferred compensation plan assets	$ 65,777	$ 65,337