v3.26.1
Revenue - Schedule of Revenue Attributed to Each Category (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Revenue $ 865,839 $ 869,232 $ 1,694,641 $ 1,639,737
U.S. Facilities [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 865,839 869,232 1,694,641 1,639,737
U.S. Facilities [Member] | Acute Inpatient Psychiatric Facilities [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 494,570 495,401 965,223 907,633
U.S. Facilities [Member] | Specialty Treatment Facilities [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 133,515 145,755 261,631 282,729
U.S. Facilities [Member] | Comprehensive Treatment Centers [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 141,180 141,522 281,592 278,507
U.S. Facilities [Member] | Residential Treatment Centers [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 96,574 $ 86,554 $ 186,195 $ 170,868