Leases and Leases Commitments - Schedule of Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
2019 (excluding three months ended March 31, 2019)	$ 23,739
2020	27,865
2021	26,545
2022	26,296
2023	26,280
2024	26,352
Thereafter	37,710
Total lease payments	194,787
Less: interest	(51,737)
Operating lease liabilities	143,050
Amounts recognized in unaudited Condensed Consolidated Balance Sheet:
Accrued liabilities	$ 29,334
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesMember
Other liabilities	$ 113,716
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesMember
Total operating lease liability	$ 143,050