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Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Property, Plant and Equipment, Gross $ 56,041 $ 42,317
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (15,727) (13,248)
Property, Plant and Equipment, Net 40,314 29,069
Nichols Ranch [Member]    
Property, Plant and Equipment, Gross 29,210 29,210
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (4,583) (2,370)
Property, Plant and Equipment, Net 24,627 26,840
Equipment and other [Member]    
Property, Plant and Equipment, Gross 13,151 13,107
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (11,144) (10,878)
Property, Plant and Equipment, Net 2,007 2,229
Alta Mesa [Member]    
Property, Plant and Equipment, Gross 13,680 0
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment 0 0
Property, Plant and Equipment, Net $ 13,680 $ 0