Note 14 - Allowance for Credit Losses - Allowance for Doubtful Accounts and Reserves for Environmental Liabilities (Details) - SEC Schedule, 12-09, Allowance, Credit Loss [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Balance	$ 505	$ 518
Increase (decrease)	(189)	(13)
Balance	$ 316	$ 505