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Revenue Recognition (Tables)
3 Months Ended
Mar. 31, 2019
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregated Revenue

The following table presents our disaggregated revenue by major source and geographic area for the three months ended March 31, 2019 and 2018.

 

   Three Months Ended
March 31,
 
   2019   2018 
   (in thousands) 
Revenue:     
North Dakota          
Oil  $522   $795 
Natural gas and liquids   51    88 
Total  $573   $883 
           
Texas          
Oil  $893   $435 
Natural gas and liquids   95    77 
Total  $988   $512 
           
Louisiana          
Oil  $-   $- 
Natural gas and liquids   -    160 
Total  $-   $160