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SEGMENT REPORTING - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | $ (1,829,664) | $ (1,616,630) | $ (1,430,061)
Segment profit (loss) | 104,621 | 98,697 | 46,363
Depreciation and amortization | (137,838) | (128,391) | (115,877)
Loss on sale and disposal of equipment | (2,276) | (2,187) | (2,529)
Severance costs | (1,902) | (3,778) | (946)
Interest expense | (79,849) | (64,483) | (50,841)
Equity in earnings in these joint ventures | 14,472 | 6,427 | 10,390
Non-cash change in fair value of interest rate swaps | (8,006) | (8,185) | 39,621
Debt restructuring and extinguishment expenses | (11,292) | 0 | (731)
Other income | 24,916 | 6,354 | (1,833)
Gain on contribution of imaging centers into joint venture | 0 | 16,808 | 0
Income before income taxes | 44,862 | 38,810 | 42,969
Total revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | (1,792,319) | (1,590,564) | (1,413,419)
Digital Health |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | (37,345) | (26,066) | (16,642)
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | (1,858,025) | (1,640,140) | (1,451,477)
Other segment items | 1,583,027 | 1,400,385 | 1,264,346
Segment profit (loss) | 246,637 | 216,245 | 165,715
Operating Segments | Total revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | (1,792,319) | (1,590,564) | (1,413,419)
Other segment items | 1,542,274 | 1,381,847 | 1,246,701
Segment profit (loss) | 250,045 | 208,717 | 166,718
Operating Segments | Digital Health |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | (65,706) | (49,576) | (38,058)
Other segment items | 40,753 | 18,538 | 17,645
Segment profit (loss) | (3,408) | 7,528 | (1,003)
Elimination of intersegment revenues |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | 28,361 | 23,510 | 21,416
Elimination of intersegment revenues | Total revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | 0 | 0 | 0
Elimination of intersegment revenues | Digital Health |  |  |
Segment Reporting Information [Line Items] |  |  |
Total consolidated revenues | $ 28,361 | $ 23,510 | $ 21,416

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