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Leases - Schedule of Supplemental Balance Sheet and Other Information Related to Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Operating Leases: |  |
Right of use assets, operating leases | $ 216,484 | $ 0
Lease liabilities: |  |
Short-term lease liabilities, operating leases | 53,029 | 0
Long-term lease liabilities, operating leases | 181,274 | $ 0
Total operating lease liabilities | 234,303 |
Finance Leases: |  |
Other noncurrent assets | 1,341 |
Accrued expenses and other current liabilities | $ 521 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccruedLiabilitiesAndOtherLiabilities |
Other long-term liabilities | $ 798 |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesNoncurrent |
Weighted Average Remaining Lease Term: |  |
Operating leases | 6 years |
Finance leases | 3 years |
Weighted Average Discount Rate: |  |
Operating leases | 4.50% |
Finance leases | 4.50% |

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