Leases - Schedule of Lease Expenses and Other Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Lessee, Lease, Description [Line Items] | ||||
| Weighted-average discount rate | 4.76% | 4.76% | ||
| Weighted-average remaining lease term (years) | 1 year 5 months 12 days | 1 year 5 months 12 days | ||
| Lease costs | ||||
| Operating lease cost | $ 1,595 | $ 10,806 | $ 6,271 | $ 21,393 |
| Variable lease cost | 3,669 | 703 | 5,021 | 1,504 |
| Short-term lease cost(2) | 12,217 | 16,684 | 31,827 | 28,908 |
| Total lease cost | 17,481 | $ 28,193 | 43,119 | $ 51,805 |
| Drill Rig Lease Costs | ||||
| Lease costs | ||||
| Short-term lease cost(2) | $ 4,600 | $ 15,800 | ||