FACILITY ACQUISITIONS AND DISPOSITIONS (Details Narrative)					9 Months Ended
	Aug. 31, 2020 USD ($) Center	Jun. 01, 2020 USD ($) $ / shares shares	Mar. 02, 2020 USD ($)	Jan. 02, 2020 USD ($)	Sep. 30, 2020 USD ($) $ / shares	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) $ / shares
Business Acquisition [Line Items]
Goodwill acquired					$ 470,685,000		$ 441,973,000
Common stock - par value (in dollars per share) | $ / shares					$ 0.0001		$ 0.0001
Proceeds from the sale of equity interests in a joint venture					$ 0	$ 132,000
Imaging On Call
Business Acquisition [Line Items]
Proceeds from the sale of equity interests in a joint venture		$ 1,000.0
AZ Tech Radiology & Open MRI, LLC
Business Acquisition [Line Items]
Number of businesses acquired | Center	8
Purchase consideration	$ 5,500,000
Fixed assets acquired	2,500,000
Right-of-use asset required	7,600,000
Other assets acquired	100,000
Operating lease liabilities acquired	7,600,000
Goodwill acquired	$ 2,900,000
MRI at Woodbridge, LLC
Business Acquisition [Line Items]
Purchase consideration			$ 2,600,000
Fixed assets acquired			500,000
Right-of-use asset required			1,100,000
Operating lease liabilities acquired			1,100,000
Goodwill acquired			1,800,000
Intangible assets acquired			300,000
Finance lease liabilities acquired			$ 100,000
Olney Open MRI, LLC
Business Acquisition [Line Items]
Purchase consideration				$ 1,800,000
Fixed assets acquired				800,000
Right-of-use asset required				1,300,000
Operating lease liabilities acquired				1,300,000
Goodwill acquired				600,000
Intangible assets acquired				$ 300,000
DeepHealth Inc.
Business Acquisition [Line Items]
Purchase consideration		34,600,000
Goodwill acquired		$ 23,400,000
Shares issued (in shares) | shares		915,132
Common stock - par value (in dollars per share) | $ / shares		$ 16.93
Shares issued at execution (in shares) | shares		823,615
Shares issued after execution (in shares) | shares		91,517
Shares issued after acquisition, term		18 months
Fair value of shares issued at execution		$ 13,900,000
Fair value of shares issued after execution		1,500,000
Fair value of replacement awards attributable to pre-combination		2,000,000.0
Contingent consideration, fair value		17,000,000.0
Business acquisition, closing costs		$ 100,000
Contingent consideration, milestone one, shares issued (in shares) | shares		390,789
Contingent consideration, milestone two, shares issued (in shares) | shares		586,184
Contingent consideration, milestone three, shares issued (in shares) | shares		195,393
Current assets acquired		$ 100,000
Deferred tax liabilities acquired		3,500,000
Intangible assets acquired		$ 14,800,000