Leases (Summary of Lease Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease asset	$ 101,811	$ 108,229
Finance lease asset	10,708	10,982
Total lease assets	112,519	119,211
Operating lease liability, current	31,584	32,207
Finance lease liability, current	4,083	4,204
Total lease liabilities, current	35,667	36,411
Operating lease liability, noncurrent	98,190	105,768
Finance lease liability, noncurrent	18,190	19,031
Total lease liabilities, noncurrent	116,380	124,799
Total lease liabilities	$ 152,047	$ 161,210
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net of accumulated depreciation of $361,215 and $344,906	Property and equipment, net of accumulated depreciation of $361,215 and $344,906
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Operating and Finance Lease, Liability, Current	Operating and Finance Lease, Liability, Current
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Operating and Finance Lease, Liability, Current	Operating and Finance Lease, Liability, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Total lease liabilities, noncurrent	Total lease liabilities, noncurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Total lease liabilities, noncurrent	Total lease liabilities, noncurrent