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SIGNIFICANT ACCOUNTING POLICIES - Narrative 4 (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 01, 2025 USD ($)	Sep. 30, 2025 USD ($) security jointVenture	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) security jointVenture	Sep. 30, 2024 USD ($)	Jun. 12, 2025 USD ($)	Dec. 31, 2024 USD ($)	Apr. 01, 2024 USD ($)
Schedule of Significant Accounting Policies [Line Items]
Number of securities without readily determinable fair value | security		4		4
Book value of RadNet joint venture interests		$ 9,300		$ 9,300
Number of unconsolidated joint ventures | jointVenture		12		12
Management service fees		$ 6,500	$ 5,900	$ 19,100	$ 17,800
Current portion		25,454		25,454			$ 24,692
Long term portion of debt obligations		1,070,886		1,070,886			$ 991,574
Promissory Note
Schedule of Significant Accounting Policies [Line Items]
Debt instrument face value						$ 17,000		$ 6,300
Debt instrument, periodic payment	$ 900
Basis spread on variable rate	2.00%
Current portion		11,300		11,300
Long term portion of debt obligations		$ 2,800		$ 2,800		$ 5,700
Dignity Health | Minimum | Joint Venture | Glendale Advanced Imaging
Schedule of Significant Accounting Policies [Line Items]
Variable interest entity, ownership percentage				35.00%
Dignity Health | Maximum | Joint Venture | Glendale Advanced Imaging
Schedule of Significant Accounting Policies [Line Items]
Variable interest entity, ownership percentage				55.00%

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