SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Revenue	$ 401,968	$ 350,044	$ 1,196,247	$ 1,046,185
Cost of Operations	341,635	313,943	1,038,647	934,757
Depreciation and Amortization	32,210	29,229	95,705	85,209
(Gain) on contribution of imaging centers into joint venture	(16,808)	0	(16,808)	0
(Gain) Loss on Disposal of Equipment	527	(247)	1,183	962
Severance	1,153	195	3,157	496
Income (Loss) from Operations	43,251	6,924	74,363	24,761
Imaging Centers
Segment Reporting Information [Line Items]
Revenue	399,081	349,144	1,188,849	1,043,129
Cost of Operations	339,102	307,868	1,022,310	917,329
Depreciation and Amortization	30,379	27,590	90,204	80,496
(Gain) on contribution of imaging centers into joint venture	(16,808)	0	(16,808)	0
(Gain) Loss on Disposal of Equipment	524	(253)	1,185	936
Severance	1,141	187	1,417	488
Income (Loss) from Operations	44,743	13,752	90,541	43,880
AI
Segment Reporting Information [Line Items]
Revenue	2,887	900	7,398	3,056
Cost of Operations	2,533	6,075	16,337	17,428
Depreciation and Amortization	1,831	1,639	5,501	4,713
(Gain) on contribution of imaging centers into joint venture	0	0	0	0
(Gain) Loss on Disposal of Equipment	3	6	(2)	26
Severance	12	8	1,740	8
Income (Loss) from Operations	$ (1,492)	$ (6,828)	$ (16,178)	$ (19,119)