Leases - Balance Sheet Classification (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Operating lease assets	$ 290,296	$ 310,238
Finance lease assets	508	906
Total leased assets	290,804	311,144
Liabilities, Current [Abstract]
Current portion of operating lease liabilities	$ 28,583	$ 23,736
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent	us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
Finance lease, current	$ 251	$ 231
Liabilities, Noncurrent [Abstract]
Operating lease liabilities, less current portion	274,155	295,636
Finance lease, non current	280	445
Total lease liabilities	303,269	320,048
Accumulated amortization	$ 471	$ 1,522
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations	us-gaap:LongTermDebtAndCapitalLeaseObligations