Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.10.0.1
Revenue Recognition (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Minimum        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Performance obligation 30 days   30 days  
Maximum        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Performance obligation 90 days   90 days  
Natural Gas, Gathering and Treating Fees | Natural Gas Revenue | Accounting Standards Update 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cost of goods and services sold $ 1,952 $ 761 $ 3,204  
Natural Gas, Gathering and Treating Fees | Lease Operating Expense | Accounting Standards Update 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cost of goods and services sold       $ 1,484