Note 2 - New Accounting Standards (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss	$ 14,103	$ 13,519		$ 8,704	$ 7,054	$ 6,389	$ 5,741
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Receivable, Allowance for Credit Loss		$ (0)	$ 3,100	$ 3,120		$ (0)	$ (0)