Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Property, Plant and Equipment [Line Items]          
Property, plant and equipment at cost $ 51,543   $ 51,543   $ 19,979
Less: accumulated depreciation (1,270)   (1,270)   (463)
Property, plant and equipment, net 50,273   50,273   19,516
Depreciation 500 $ 100 800 $ 100  
Water service-related assets          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment at cost 47,988   47,988   18,193
Furniture, fixtures and equipment          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment at cost $ 3,555   $ 3,555   $ 1,786