Note 8 - Contract Assets and Liabilities (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2020
Contract with Customer, Receivable, after Allowance for Credit Loss	$ 0.6	$ 4.3	$ 0.4
License [Member]
Contract with Customer, Liability, Noncurrent				$ 2.0
Contract with Customer, Liability, Revenue Recognized	0.1	0.1
Stewardship and Conservation Efforts Subsidized by the State of Hawaii and the County of Maui [Member]
Contract with Customer, Receivable, after Allowance for Credit Loss		$ 3.5
Kapalua [Member]
Contract with Customer, Receivable, after Allowance for Credit Loss	$ 0.6