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Organization, Operations and Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Schedule of Concentration of Credit Risk

The following table presents the joint interest operators that accounted for 10% or more of the Company’s total oil and natural gas revenue for at least one of the periods presented:

 

Operator   2019     2018  
             
CML Exploration, LLC     52 %     18 %
Zavanna, LLC     31 %     47 %
Crimson Exploration Operating, Inc.     7 %     14 %
Schedule of Property and Equipment Useful Life

Depreciation of buildings, improvements, machinery and equipment is provided principally by the straight-line method over estimated useful lives as follows:

 

    Years  
Real estate:        
Buildings     20 to 45  
Building improvements     10 to 25  
Land improvements     10 to 35  
Administrative assets:        
Computers and software     3 to 10  
Office furniture and equipment     5 to 20  
Vehicles and other     5