Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Facility operating expense	$ 1,732	$ 1,561	$ 3,358	$ 3,084
Facility lease expense	50,512	41,538	96,639	83,102
Operating lease expense	52,244	43,099	99,997	86,186
Operating lease expense adjustment	11,557	8,308	22,362	16,615
Changes in operating lease assets and liabilities for lessor capital expenditure reimbursements	0	(3,367)	(2,244)	(4,857)
Operating net cash outflows from operating leases	63,801	48,040	120,115	97,944
Depreciation and amortization	2,515	7,607	7,743	15,273
Interest expense: financing lease obligations	5,453	11,994	12,005	24,052
Financing lease expense	7,968	19,601	19,748	39,325
Operating cash outflows from financing leases	5,453	11,994	12,005	24,052
Financing cash outflows from financing leases	2,126	5,610	7,978	11,100
Changes in financing lease assets and liabilities for lessor capital expenditure reimbursement	0	(3,770)	0	(6,977)
Total net cash outflows from financing leases	$ 7,579	$ 13,834	$ 19,983	$ 28,175