REVENUE AND ACCOUNTS RECEIVABLE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 1,221,414	$ 1,030,574	$ 2,388,454	$ 2,035,059
Total Medicaid and Medicare
Disaggregation of Revenue [Line Items]
Revenue	852,172	733,598	1,663,314	1,452,653
Medicaid
Disaggregation of Revenue [Line Items]
Revenue	485,848	411,760	939,688	801,923
Medicare
Disaggregation of Revenue [Line Items]
Revenue	291,117	258,869	578,868	524,452
Medicaid — skilled
Disaggregation of Revenue [Line Items]
Revenue	75,207	62,969	144,758	126,278
Managed care
Disaggregation of Revenue [Line Items]
Revenue	229,495	191,022	456,712	379,126
Private and other
Disaggregation of Revenue [Line Items]
Revenue	$ 139,747	$ 105,954	$ 268,428	$ 203,280
Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%	100.00%
Revenue \| Customer Concentration Risk \| Total Medicaid and Medicare
Disaggregation of Revenue [Line Items]
% of Revenue	69.80%	71.20%	69.60%	71.40%
Revenue \| Customer Concentration Risk \| Medicaid
Disaggregation of Revenue [Line Items]
% of Revenue	39.80%	40.00%	39.30%	39.40%
Revenue \| Customer Concentration Risk \| Medicare
Disaggregation of Revenue [Line Items]
% of Revenue	23.80%	25.10%	24.20%	25.80%
Revenue \| Customer Concentration Risk \| Medicaid — skilled
Disaggregation of Revenue [Line Items]
% of Revenue	6.20%	6.10%	6.10%	6.20%
Revenue \| Customer Concentration Risk \| Managed care
Disaggregation of Revenue [Line Items]
% of Revenue	18.80%	18.50%	19.10%	18.60%
Revenue \| Customer Concentration Risk \| Private and other
Disaggregation of Revenue [Line Items]
% of Revenue	11.40%	10.30%	11.30%	10.00%