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Commitments and Contingencies (Changes in Self-insurance Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Changes in Self-insurance Liability [Roll Forward]    
Balance, beginning of period $ 563,103 $ 635,857
Reserves provided 19,966 24,121
Adjustments to previously recorded reserves (26,845) (564)
Payments, net (8,603) (6,669)
Balance, end of period $ 547,621 $ 652,745