Leases - Schedule of Lease Expenses and Other Information (Details) $ in Thousands |
3 Months Ended |
|---|---|
|
Mar. 31, 2019
USD ($)
| |
| Leases [Abstract] | |
| Weighted-average discount rate | 4.59% |
| Weighted-average remaining lease term (years) | 1 year 6 months |
| Lease costs | |
| Operating lease cost | $ 10,587 |
| Variable lease cost | 801 |
| Short-term lease cost | 12,224 |
| Total Lease Cost | $ 23,612 |