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Note 3 - Property, Plant, Equipment and Water Programs - Property, Plant, Equipment and Water Programs (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Property, plant, and equipment $ 84,956 $ 60,545
Less accumulated depreciation (7,377) (7,064)
Property, plant, and equipment, net 77,579 53,481
Land and Land Improvements [Member]    
Property, plant, and equipment 26,798 26,798
Water Programs [Member]    
Property, plant, and equipment 28,709 28,323
Building [Member]    
Property, plant, and equipment 1,598 1,576
Leasehold Improvements [Member]    
Property, plant, and equipment 570 570
Pipelines [Member]    
Property, plant, and equipment 22,086 0
Furniture and Fixtures [Member]    
Property, plant, and equipment 461 461
Machinery and Equipment [Member]    
Property, plant, and equipment 2,171 2,029
Construction in Progress [Member]    
Property, plant, and equipment $ 2,563 $ 788