Leases (Summary of Lease Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 71,163	$ 108,229
Finance lease assets	9,884	10,982
Total lease assets	81,047	119,211
Operating lease liability, current	28,971	32,207
Finance lease liability, current	4,688	4,204
Total current lease liabilities	33,659	36,411
Operating lease liability, noncurrent	72,797	105,768
Finance lease liability, noncurrent	14,443	19,031
Total noncurrent lease liabilities	87,240	124,799
Total lease liabilities	$ 120,899	$ 161,210
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net of accumulated depreciation of $403,708 and $344,906	Property and equipment, net of accumulated depreciation of $403,708 and $344,906
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of lease obligations	Current portion of lease obligations
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of lease obligations	Current portion of lease obligations
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Total noncurrent lease liabilities	Total noncurrent lease liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Total noncurrent lease liabilities	Total noncurrent lease liabilities