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Note 4 - Property (Details Textual) - Land [Member]
3 Months Ended
Mar. 31, 2019
ft²
a
Area of Land 22,800
West Maui [Member]  
Area of Land 20,700
Area of Elevation from Sea | ft² 5,700
West Maui [Member] | Kapalua Resort [Member]  
Area of Land 3,000
Area of Land Designated 900
Upcountry Maui [Member]  
Area of Land 2,100