Leases - Operating and Finance Lease Right-of-use-assets and Related Lease Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Leases
Operating lease assets	$ 30,391	$ 30,716
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Operating lease assets	Operating lease assets
Finance lease assets	$ 15,668	$ 16,632
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Finance lease assets	Finance lease assets
Total leased assets	$ 46,059	$ 47,348
Operating liabilities current	$ 5,217	$ 4,978
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Finance liabilities current	$ 1,399	$ 1,511
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Finance liabilities current	Finance liabilities current
Operating liabilities noncurrent	$ 25,290	$ 25,724
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Finance liabilities noncurrent	$ 42,671	$ 43,674
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Finance liabilities noncurrent	Finance liabilities noncurrent
Total lease liabilities	$ 74,577	$ 75,887
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
Finance lease, accumulated depreciation	$ 47,200	$ 46,400
Prepaid financing costs	$ 500	$ 600