Asset Retirement Obligations (Details) $ in Thousands |
9 Months Ended |
|---|---|
|
Sep. 30, 2019
USD ($)
| |
| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | |
| Asset retirement obligations as of January 1, 2019 | $ 13,895 |
| Liabilities acquired | 101 |
| Liabilities incurred | 1,075 |
| Liabilities divested and settled | (1,112) |
| Accretion expense | 670 |
| Asset retirement obligations as of September 30, 2019 | $ 14,629 |