SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended		24 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue:	$ 350,044	$ 332,690	$ 1,046,185	$ 981,928
Cost of Operations	313,943	272,756	934,757	838,609
Depreciation and Amortization	29,229	24,606	85,209	71,272
Loss (Gain) on Disposal of Equipment	(247)	2,595	962	(279)
Severance	195	163	496	715
Income from Operations	6,924	32,570	24,761	71,611
COVID-19 Pandemic
Segment Reporting Information [Line Items]
Proceeds from provider relief funding		0		6,300	$ 9,100	$ 26,300	$ 35,400
Imaging Centers
Segment Reporting Information [Line Items]
Revenue:	349,144	332,194	1,043,129	981,432
Cost of Operations	307,868	271,509	917,329	834,944
Depreciation and Amortization	27,590	24,437	80,496	70,924
Loss (Gain) on Disposal of Equipment	(253)	2,595	936	(279)
Severance	187	163	488	715
Income from Operations	13,752	33,490	43,880	75,128
AI
Segment Reporting Information [Line Items]
Revenue:	900	496	3,056	496
Cost of Operations	6,075	1,247	17,428	3,665
Depreciation and Amortization	1,639	169	4,713	348
Loss (Gain) on Disposal of Equipment	6	0	26	0
Severance	8	0	8	0
Income from Operations	$ (6,828)	$ (920)	$ (19,119)	$ (3,517)