SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 461,142	$ 401,968	$ 1,352,563	$ 1,196,247
Cost of Operations	391,800	341,635	1,169,113	1,038,647
Total depreciation and amortization	34,979	32,210	101,822	95,705
Gain on contribution of imaging centers into joint venture:	0	(16,808)	0	(16,808)
Total loss on disposal of equipment	148	527	735	1,183
Severance	304	1,153	797	3,157
Income (Loss) from Operations	33,911	43,251	80,096	74,363
Imaging Center
Segment Reporting Information [Line Items]
Total revenue	444,775	389,783	1,305,707	1,161,381
Cost of Operations	374,789	334,580	1,120,542	1,008,814
Total depreciation and amortization	32,032	30,221	94,095	89,743
Gain on contribution of imaging centers into joint venture:	0	(16,808)	0	(16,808)
Total loss on disposal of equipment	153	524	739	1,185
Severance	271	1,141	720	1,417
Income (Loss) from Operations	37,530	40,125	89,611	77,030
Digital Health
Segment Reporting Information [Line Items]
Total revenue	16,367	12,185	46,856	34,866
Cost of Operations	17,011	7,055	48,571	29,833
Total depreciation and amortization	2,947	1,989	7,727	5,962
Gain on contribution of imaging centers into joint venture:	0	0	0	0
Total loss on disposal of equipment	(5)	3	(4)	(2)
Severance	33	12	77	1,740
Income (Loss) from Operations	(3,619)	3,126	(9,515)	(2,667)
Third Party
Segment Reporting Information [Line Items]
Total revenue	461,142	401,968	1,352,563	1,196,247
Intersegment
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Operating Segments | Imaging Center
Segment Reporting Information [Line Items]
Total revenue	452,368	395,613	1,325,825	1,178,873
Operating Segments | Digital Health
Segment Reporting Information [Line Items]
Total revenue	16,367	12,185	46,856	34,866
Operating Segments | Third Party | Imaging Center
Segment Reporting Information [Line Items]
Total revenue	452,368	395,613	1,325,825	1,178,873
Operating Segments | Third Party | Digital Health
Segment Reporting Information [Line Items]
Total revenue	8,774	6,355	26,738	17,374
Operating Segments | Intersegment | Imaging Center
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Operating Segments | Intersegment | Digital Health
Segment Reporting Information [Line Items]
Total revenue	7,593	5,830	20,118	17,492
Intersegment Eliminations
Segment Reporting Information [Line Items]
Total revenue	(7,593)	(5,830)	(20,118)	(17,492)
Intersegment Eliminations | Third Party
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Intersegment Eliminations | Intersegment
Segment Reporting Information [Line Items]
Total revenue	$ (7,593)	$ (5,830)	$ (20,118)	$ (17,492)