Leases Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 54,787	$ 62,251
Accrued liabilities	14,742	13,900
Long-term operating lease liabilities	46,398	55,652
Total operating lease liabilities	61,140	69,552
Other long-lived assets, at cost	764	823
Accumulated depreciation	(483)	(391)
Other long-lived assets, net	$ 281	$ 432
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:LiabilitiesCurrentAbstract	us-gaap:LiabilitiesCurrentAbstract
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets