v3.26.1
GOODWILL AND INTANGIBLE ASSETS - Intangible assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Intangible Assets      
Amortizable intangible assets - Gross carrying amount $ 1,392,575   $ 1,392,575
Amortizable intangible assets - Accumulated amortization (764,400)   (748,238)
Amortizable intangible assets - Net carrying amount 628,175   644,337
Non-amortizable intangible assets 559,900   559,900
Total intangibles, Gross 1,952,475   1,952,475
Total intangibles, net 1,188,075   1,204,237
Aggregate amortization of intangible assets 16,200 $ 19,700  
Trade names      
Intangible Assets      
Non-amortizable intangible assets 540,300   540,300
Certificates of need      
Intangible Assets      
Non-amortizable intangible assets 19,600   19,600
Customer relationships      
Intangible Assets      
Amortizable intangible assets - Gross carrying amount 1,220,060   1,220,060
Amortizable intangible assets - Accumulated amortization (618,865)   (604,508)
Amortizable intangible assets - Net carrying amount 601,195   615,552
Membership lists      
Intangible Assets      
Amortizable intangible assets - Gross carrying amount 92,000   92,000
Amortizable intangible assets - Accumulated amortization (67,006)   (65,473)
Amortizable intangible assets - Net carrying amount 24,994   26,527
Trade names      
Intangible Assets      
Amortizable intangible assets - Gross carrying amount 73,318   73,318
Amortizable intangible assets - Accumulated amortization (71,552)   (71,302)
Amortizable intangible assets - Net carrying amount 1,766   2,016
Non-compete and other      
Intangible Assets      
Amortizable intangible assets - Gross carrying amount 7,197   7,197
Amortizable intangible assets - Accumulated amortization (6,977)   (6,955)
Amortizable intangible assets - Net carrying amount $ 220   $ 242