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Segment Information and Major Customers (Tables)
12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Segment Information by Major Customers

The Company sells its oil and gas production to a number of direct purchasers under direct contracts or through other operators under joint operating agreements. Listed below are the percent of the Company’s total oil and gas sales made which represented more than 10% of the Company’s oil and gas sales in the year 2017.

 

Oil Purchasers:

  

Apache Corporation

     28

Plains All American Inc.

     23

Sunoco, Inc.

     16

Shell Trading Company

     10

Gas Purchasers:

  

Targa Pipeline Mid-Continent

     25

Apache Corporation

     12