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SIGNIFICANT ACCOUNTING POLICIES (Details - Goodwill)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Goodwill [Roll Forward]  
Goodwill, beginning balance $ 441,973
Goodwill, ending balance 444,407
Olney Open MRI, LLC  
Goodwill [Roll Forward]  
Goodwill acquired through acquisitions 601
MRI at Woodbridge, LLC  
Goodwill [Roll Forward]  
Goodwill acquired through acquisitions $ 1,833