Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Gathering and Treating Fees) (Details)

v3.19.1
Revenue Recognition (Gathering and Treating Fees) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Accounts Receivable      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Contract with customer, asset, gross, current $ 98,568   $ 87,061
Natural Gas, Gathering and Treating Fees | Natural Gas Revenue      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Cost of goods and services sold $ 2,408    
Natural Gas, Gathering and Treating Fees | Lease Operating Expense      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Cost of goods and services sold   $ 1,252