Note 5 - Accounts Receivable - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Balance	$ 13,619	$ 11,997	$ 11,997
Write-offs	(30)		(5,715)
Provision	618	$ 1,004	7,337
Balance	$ 14,207		$ 13,619