Summary of Significant Accounting Policies - Schedule of Variable Interest Entities (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024 USD ($) variableInterestEntity	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) variableInterestEntity	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) variableInterestEntity
Accounting Policies [Abstract]
Number of Consolidated Variable Interest Entities | variableInterestEntity		9		9		9
Variable Interest Entity [Line Items]
Total assets	[1]	$ 4,608,691		$ 4,608,691		$ 4,731,558
Current installments of long-term debt	[1]	10,725		10,725		18,605
Accounts payable	[1]	371,098		371,098		474,543
Accrued salaries and benefits	[1]	248,358		248,358		267,685
Other accrued expenses and liabilities	[1]	278,378		278,378		233,271
Total current liabilities	[1]	908,559		908,559		994,104
Long-term debt, less current maturities	[1]	1,081,963		1,081,963		1,168,253
Self-insured liabilities	[1]	240,618		240,618		243,552
Other long-term liabilities	[1]	58,931		58,931		76,002
Total liabilities	[1]	3,446,034		3,446,034		3,649,242
Income before income taxes		82,183	$ 67,817	138,747	$ 96,818
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Total assets		1,200,000		1,200,000		1,200,000
Current installments of long-term debt		2,328		2,328		2,386
Accounts payable		80,319		80,319		103,274
Accrued salaries and benefits		36,828		36,828		34,730
Other accrued expenses and liabilities		61,233		61,233		53,684
Total current liabilities		180,708		180,708		194,074
Long-term debt, less current maturities		6,842		6,842		8,044
Self-insured liabilities		659		659		651
Other long-term liabilities		5,359		5,359		5,437
Total liabilities		317,062		317,062		337,782
Income before income taxes		76,700	$ 72,200	138,400	$ 138,100
Nonrelated Party
Variable Interest Entity [Line Items]
Long-term operating lease liability	[1]	230,047		230,047		235,241
Nonrelated Party | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Long-term operating lease liability		114,021		114,021		120,056
Related Party
Variable Interest Entity [Line Items]
Long-term operating lease liability	[1]	925,916		925,916		932,090
Related Party | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Long-term operating lease liability		$ 9,473		$ 9,473		$ 9,520

[1] As of June 30, 2024 and December 31, 2023, the unaudited condensed consolidated balance sheet included total liabilities of consolidated variable interest entities of $317.1 million and $337.8 million, respectively. Refer to Note 2, Summary of Significant Accounting Policies, for further discussion.