Note 6 - Long-term Debt (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) ft²
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	Base Rate [Member]
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000
Debt Instrument, Basis Spread on Variable Rate	0.01125%
Line of Credit Facility, Commitment Fee Amount	$ 0
Debt Instrument, Covenant, Required Minimum Liquidity	2,000
Debt Instrument, Covenant, Maximum Total Liabilities	$ 45,000
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member] | Kapalua Resort [Member]
Pledged Assets not Separately Reported, Area of Real Estate (Square Foot) | ft²	30,000