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L. SUPPLEMENTARY FINANCIAL INFORMATION ON OIL AND NATURAL GAS EXPLORATION (Tables)
12 Months Ended
Dec. 31, 2019
Extractive Industries [Abstract]  
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities

   2019
    

Gas

(MMCF)

    

Oil

(MBBLS)

 
           
Proved developed and undeveloped reserves -  January 1,2019   2,268    28 
Purchase of oil and natural gas properties in place   —      —   
Discoveries and exclusions   —      —   
Revisions   (1,785)   4 
Sales of oil and gas properties in place   —      (4)
Production   (129)   —   
Proved developed and undeveloped reserves -  December 31,2019   354    28 
Probable reserves   —      —   
Possible reserves   —      —   
Total reserves - December 31, 2019   354    28 
           
           
Proved developed at  beginning of year   180    28 
           
Proved developed reserves at end of year   354    28 
           
           

 

Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure

    2018  
    

Gas

(MMCF)

    

Oil

(MBBLS)

 
           
Proved developed and undeveloped reserves -  January 1,2018   830    69 
Purchase of oil and natural gas properties in place   —      —   
Discoveries and exclusions   (520)   (37)
Revisions   —      —   
Sales of oil and gas properties in place   —      —   
Production   (130)   (4)
Proved developed and undeveloped reserves -  December 31,2018   180    28 
Probable reserves   1,566    —   
Possible reserves   522    —   
Total reserves - December 31, 2018   2,268    28 
           
           
Proved developed at  beginning of year   830    69 
           
Proved developed reserves at end of year   180    28 
           
           
           
    2019    2018 
           
Oil and gas sales  $590   $682 
Operating expenses   (599)   (597)
Depreciation, depletion and amortization   (87)   (247)
Impairment of oil & gas properties   (2,285)   —   
           
Results of operations  $(2,381)  $(162)
           
           

 

Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows

    2019    2018 
           
Future oil and gas cash inflows  $2,526   $8,292 
Future oil & gas operating expenses   (611)   (1,478)
Future development costs   0    (1,400)
Future tax expense   (159)   (590)
Future net cash flows  $1,756   $4,824 
10% discount to reflect timing of cash flows   (806)   (1,853)
           
   $950   $2,971