GOODWILL AND OTHER INTANGIBLE ASSETS (Details - Schedule of Goodwill) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 513,820	$ 472,879
Additions	169,248	40,864
Measurement period and other adjustments	41	77
Disposals	(4,200)
Currency translation	(1,244)
Goodwill, ending balance	677,665	513,820
Imaging Centers
Goodwill [Roll Forward]
Goodwill, beginning balance	489,210	448,269
Additions	120,551	40,864
Measurement period and other adjustments	(106)	77
Disposals	(4,200)
Currency translation	1,028
Goodwill, ending balance	606,483	489,210
AI
Goodwill [Roll Forward]
Goodwill, beginning balance	24,610	24,610
Additions	48,697	0
Measurement period and other adjustments	147	0
Disposals	0
Currency translation	(2,272)
Goodwill, ending balance	$ 71,182	$ 24,610