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Note 2 - Assets Held for Sale (Details Textual)
$ in Thousands
1 Months Ended 12 Months Ended
May 01, 2021
USD ($)
May 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
a
Dec. 31, 2020
USD ($)
a
Feb. 01, 2022
USD ($)
a
Proceeds from Sale of Productive Assets, Total     $ 4,203 $ 0  
PUC-regulated Assets of Kapalua Water Company, Ltd and Kapalua Waste Treatment Company, Ltd [Member]          
Proceeds from Sale of Productive Assets, Total $ 4,200 $ 4,200      
Kapalua Central Resort Project [Member]          
Receivables, Long-term Contracts or Programs, Total     $ 40,000    
630-Acre Parcel Of Agricultural Land [Member] | Upcountry Maui [Member]          
Area of Real Estate Property (Acre) | a     646 646  
630-Acre Parcel Of Agricultural Land [Member] | Subsequent Event [Member] | Upcountry Maui [Member]          
Receivables, Long-term Contracts or Programs, Total         $ 9,700
Area of Real Estate Property (Acre) | a         646
Deposits Received for Sale of Property         $ 2,000