Note 1 - Summary of Significant Accounting Policies - Changes in the Allowance for Doubtful Accounts and the Amounts Charged to Bad Debt Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance balance	$ 781	$ 544	$ 853
Costs and expenses	2,595	1,021	385
Write-offs	(2,128)	(784)	(694)
Allowance balance	$ 1,248	$ 781	$ 544