Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Gathering and Treating Fees) (Details)

v3.19.3
Revenue Recognition (Gathering and Treating Fees) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Accounts Receivable          
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Contract with customer, asset, gross, current $ 83,442   $ 83,442   $ 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 $ 2,566 $ 2,209 $ 7,779 $ 5,413