Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.8.0.1
Acquisitions (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
$ / shares
Sep. 30, 2017
USD ($)
$ / shares
Nov. 01, 2017
USD ($)
Sep. 29, 2017
USD ($)
a
Dec. 31, 2016
USD ($)
Business Acquisition [Line Items]          
Earnest Money Deposits $ 3,205 [1] $ 3,205 [1]     $ 0
Business Acquisition, Pro Forma Revenue 41,865 130,504      
Capitalized Costs, Proved Properties 1,600 1,600      
Property, Plant and Equipment, Gross 529,462 529,462     259,377
Asset Retirement Obligation 3,000 3,000      
Amount Transferred from Escrow Account       $ 7,100  
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax $ (8,657) $ 38,947      
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares $ (580) $ 2,600      
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares $ (580) $ 2,580      
Second Lien Facility $ 200,000 $ 200,000     $ 0
Devon Acquisition [Member]          
Business Acquisition [Line Items]          
Acreage, Net | a       19,600  
Other Payments to Acquire Businesses   $ 205,000      
Escrow Deposit       $ 10,300  
Earnest Money Deposits       3,200  
Capitalized Costs, Proved Properties       42,795  
Capitalized Costs, Unproved Properties       142,817  
Property, Plant and Equipment, Gross       8,642  
Asset Retirement Obligation       491  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net       193,763  
Cash Paid on Date of Acquisition       189,911  
Amount Transferred from Escrow Account       7,049  
Working Capital Adjustments, Net       (3,197)  
Preliminary Purchase Price       193,763  
Business Acquisition, Transaction Costs       $ 1,500  
Subsequent Event [Member] | Devon Acquisition [Member]          
Business Acquisition [Line Items]          
Additional working interests     $ 700    
[1] 1 Represents amount remaining in the escrow deposit for the Acquisition (see Note 3).