Note 5 - Debt (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2024	Mar. 15, 2023	Feb. 19, 2021
Interest Expense, Debt	$ 2,785
Interest Payable, Current	3,019	$ 0
Credit Facility [Member]
Debt Agreement, Maximum Borrowing Capacity				$ 350,000
Long-Term Debt, Total			$ 0
Deferred Debt Issuance Cost, Writeoff	2,478
Interest Payable, Current	$ 0	$ 0
Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				50,000
Credit Facility [Member] | Draw Term Loan [Member]
Long-Term Debt, Total				$ 300,000