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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Service Fee Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Revenue from External Customer [Line Items] |  |  |  |
Revenue | $ 461,142 | $ 401,968 | $ 1,352,563 | $ 1,196,247
Imaging Center Segment Revenue |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 444,775 | 389,783 | 1,305,707 | 1,161,381
Commercial insurance |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 255,375 | 218,923 | 752,514 | 652,597
Medicare |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 102,852 | 89,981 | 298,001 | 262,719
Medicaid |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 10,894 | 10,519 | 32,804 | 30,279
Workers' compensation/personal injury |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 10,232 | 9,745 | 33,088 | 34,785
Other patient revenue |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 10,607 | 10,443 | 34,524 | 30,191
Management fee revenue |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 6,242 | 3,922 | 18,255 | 12,203
Heart and lung |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 4,696 | 2,441 | 12,553 | 6,377
Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 10,314 | 3,768 | 18,918 | 14,248
Revenue under capitation arrangements |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 33,563 | 40,041 | 105,050 | 117,982
Digital Health |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | 16,367 | 12,185 | 46,856 | 34,866
Service Revenue |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue | $ 461,142 | $ 401,968 | $ 1,352,563 | $ 1,196,247

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