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Note 6 - Assets Held for Sale (Details Textual)
May 20, 2022
USD ($)
Jun. 30, 2022
a
May 13, 2022
USD ($)
Feb. 01, 2022
USD ($)
a
Dec. 31, 2021
USD ($)
a
Kapalua Central Resort Project [Member]          
Receivables, Long-Term Contracts or Programs         $ 40,000,000.0
Escrow Deposit     $ 300,000    
Kapalua Central Resort Project [Member] | Restricted to Cost Associated With Extending Sma Permit [Member]          
Restricted Cash and Cash Equivalents, Total     $ 290,000    
630-Acre Parcel Of Agricultural Land [Member] | Upcountry Maui [Member]          
Receivables, Long-Term Contracts or Programs       $ 9,600,000  
Area of Real Estate Property (Acre) | a   646   646 646
Increase (Decrease) in Long-Term Receivables, Current $ (9,200,000)