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Oil and Gas Producing Activities (Tables)
 12 Months Ended
Dec. 31, 2017
Oil and Gas Property [Abstract]  
Schedule of Costs Incurred in Purchase of Proved and Unproved Properties, and Exploration and Development Activities

The following table presents the Company’s capitalized costs associated with oil and gas producing activities as of December 31, 2017 and 2016:

 

    2017     2016  
             
Oil and Gas Properties                
Unevaluated properties:                
Unproved leasehold costs   $ 4,664     $ 4,664  
Exploratory wells in progress     -       -  
Evaluated properties in full cost pool     86,313       87,834  
Less accumulated depreciation, depletion and amortization     (83,362 )     (82,640 )
                 
Net capitalized costs   $ 7,615     $ 9,858  
Schedule of Operations from Oil and Gas Producing Activities

Presented below are the results of operations from oil and gas producing activities for the years ended December 31, 2017, 2016 and 2015:

 

    2017     2016     2015  
                   
Oil and gas sales   $ 6,545     $ 5,746     $ 10,296  
Production costs     (3,402 )     (2,728 )     (7,352 )
Depreciation, depletion and amortization     (753 )     (2,529 )     (8,412 )
Impairment of oil and gas properties     -       (9,568 )     (57,676 )
                         
Results of operations from oil and gas producing activities   $ 2,390     $ (9,079 )   $ (63,144 )