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GOODWILL AND OTHER INTANGIBLE ASSETS (Details - Schedule of Goodwill) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 418,093	$ 256,776
Goodwill transferred to other assets		(1,059)
Goodwill disposed of through sale or transfer	(123)	(80)
Goodwill, impairment loss		(3,800)
Goodwill, ending balance	440,981	418,093
Imaging Services Company of New York
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		2,692
MemorialCare Medical Foundation
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		545
Womens Imaging Specialists
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		4,268
Valley Metabolic Imaging
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		1,469
Sierra Imaging Associates
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		1,147
Washington Heights Medical Management
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		2,303
Medical Arts Radiological Group, PC
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	722	41,469
Arcadia Radiology Imaging
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		2,582
Southern California Diagnostic Imaging, Inc
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		41
Orange County Diagnostics Imaging Center
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		3,618
New Jersey Imaging Network, LLC
Goodwill [Roll Forward]
Goodwill acquired through acquisitions		$ 106,122
Dignity Health
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	1
West Valley Imaging Group, LLC
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	2,490
Hudson Valley Radiology Associates
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	3,125
Kern Radiology Imaging Systems Inc.
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	10,507
Zilkha Radiology
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	2,577
Ramic Mahwah LLC
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	231
Garden State Radiology Network LLC
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	2,021
Nulogix, Inc.
Goodwill [Roll Forward]
Goodwill acquired through acquisitions	$ 1,337

X

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