XML 53 R37.htm IDEA: XBRL DOCUMENT v3.10.0.1
Acquisitions and Divestitures (Details)
a in Thousands, $ in Thousands
1 Months Ended 9 Months Ended
Feb. 28, 2017
USD ($)
a
well
Sep. 30, 2017
USD ($)
Costs Incurred, Acquisition of Oil and Gas Properties [Abstract]    
Area of land acquired | a 13  
Payments to acquire land $ 47,800  
Number of wells in which a working interest was acquired | well 4  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups    
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal   $ 0
Disposal Group, Not Discontinued Operations | Oil and Gas Properties    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups    
Proceeds from sale of properties   $ 16,000