Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Details)
 12 Months Ended
Dec. 31, 2018
Software developed for internal use  
Property, plant and equipment, estimated useful life 5 years
Minimum | Fencing, water wells and water well fields  
Property, plant and equipment, estimated useful life 10 years
Minimum | Office furniture, equipment and vehicles  
Property, plant and equipment, estimated useful life 5 years
Maximum | Fencing, water wells and water well fields  
Property, plant and equipment, estimated useful life 15 years
Maximum | Office furniture, equipment and vehicles  
Property, plant and equipment, estimated useful life 7 years