Note 5 - Accounts Receivable - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Balance	$ 7,415	$ 13,619	$ 13,619
Write-offs	(2,269)		(7,554)
Provision	171	$ 618	1,350
Balance	$ 5,317		$ 7,415