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OIL AND GAS PRODUCING ACTIVITIES (Tables)
 12 Months Ended
Dec. 31, 2015
Oil and Gas Property [Abstract]  
Schedule of net costs incurred in the purchase of proved and unproved properties, and in exploration and development activities

The following table presents the Company’s capitalized costs associated with oil and gas producing activities as of December 31, 2015 and 2014:

 

    2015     2014  
             
Oil and Gas Properties:                
Unevaluated properties:                
Unproved leasehold costs   $ 5,664     $ 10,188  
Exploratory wells in progress     -       2,357  
Evaluated properties in full cost pool     97,912       147,486  
Less accumulated depreciation, depletion and amortization     (80,144 )     (71,762 )
                 
Net capitalized costs   $ 23,432     $ 88,269  
Schedule of unevaluated leasehold costs were incurred

The table below presents the years in which unevaluated leasehold costs were incurred:

 

    As of December 31,  
    2015     2014  
Year Incurred            
             
2010   $ -     $ 103  
2011     2,686       4,015  
2012     267       271  
2013     1,525       2,067  
2014     1,153       3,732  
2015     33       -  
                 
    $ 5,664     $ 10,188  
Schedule of costs incurred in oil and gas property acquisition, exploration and development activities

Costs incurred in oil and gas property acquisition, exploration and development activities, all of which have been capitalized, are summarized as follows for the years ended December 31, 2015, 2014 and 2013:

 

    2015     2014     2013  
                   
Acquisition costs:                        
Proved properties   $ 1,658     $ 552     $ 445  
Unproved properties     632       4,167       1,760  
Development costs     61       8,037       9,403  
Exploration costs     369       14,791       9,138  
                         
Total (1)   $ 2,720     $ 27,547     $ 20,746  

 

  (1) Includes amounts related to estimated asset retirement obligations of $61, $281 and $131 for the years ended December 31, 2015, 2014 and 2013, respectively.
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, 2015, 2014 and 2013:

 

    2015     2014     2013  
                   
Oil and gas sales   $ 10,296     $ 32,379     $ 33,647  
Production costs     (7,352 )     (10,638 )     (10,469 )
Depreciation, depletion and amortization     (8,412 )     (14,685 )     (13,623 )
Impairment of oil and gas properties     (57,676 )     -       (5,828 )
                         
Results of operations from oil and gas producing activities   $ (63,144 )   $ 7,056     $ 3,727