FACILITY ACQUISITIONS AND ASSETS HELD FOR SALE (Details Narrative) - USD ($) $ in Thousands								1 Months Ended	9 Months Ended
	Aug. 01, 2019	Apr. 01, 2019	Mar. 01, 2019	Feb. 28, 2019	Feb. 02, 2019	Feb. 01, 2019	Apr. 12, 2018	Nov. 06, 2014	Sep. 30, 2019	Dec. 31, 2018	Oct. 06, 2014
Business Acquisition [Line Items]
Equity method investment realized gain (loss)									$ 134
Goodwill acquired									$ 439,867	$ 418,093
Kern Radiology Imaging Systems, Inc.
Business Acquisition [Line Items]
Fixed assets acquired		$ 10,100
Operating lease liabilities acquired		14,500
Other assets acquired		36
Right-of-use asset required		9,700
Goodwill acquired		10,500
Intangible assets acquired		3,400
Purchase consideration		19,300
Zilkha Radiology
Business Acquisition [Line Items]
Fixed assets acquired		2,200
Operating lease liabilities acquired		5,100
Right-of-use asset required		5,100
Goodwill acquired		2,600
Intangible assets acquired		100
Purchase consideration		4,500
Equipment indebtedness retired		$ 332
Hudson Valley Radiology Associates
Business Acquisition [Line Items]
Goodwill acquired				$ 3,100
Intangible assets acquired				340
Purchase consideration				680
Equity interest issued, value assigned				6,000
Equipment				10
West Valley Imaging Group, LLC
Business Acquisition [Line Items]
Fixed assets acquired						$ 300
Other assets acquired						7
Goodwill acquired						2,500
Payments to acquire equity method investments					$ 750
Intangible assets acquired						200
Purchase consideration						$ 3,000
Ventura County Imaging Group, LLC
Business Acquisition [Line Items]
Ownership percentage			60.00%
Payments to acquire equity method investments			$ 10,400
Dignity Health | Partnership | Ventura County Imaging Group, LLC
Business Acquisition [Line Items]
Ownership percentage			40.00%
Payments to acquire equity method investments			$ 6,100
Payments to acquire equity method investments, Assets			$ 800
Ownership percentage in exchange for assets			5.00%
Payments to acquire equity method investments, cash			$ 5,300
Ownership percentage in exchange for cash			35.00%
West Valley Imaging Group, LLC | West Valley Imaging Group, LLC
Business Acquisition [Line Items]
Noncontrolling interest, ownership percentage						25.00%
Jefferson Health
Business Acquisition [Line Items]
Ownership percentage											51.00%
Garden State Radiology Network, LLC.
Business Acquisition [Line Items]
Ownership percentage											49.00%
Equity method investment realized gain (loss)	$ (114)
Fixed assets acquired	599
Operating lease liabilities acquired	426
Other assets acquired	1
Right-of-use asset required	426
Goodwill acquired	888
Payments to acquire equity method investments								$ 2,200
New Jersey Imaging Networks
Business Acquisition [Line Items]
Fixed assets acquired	$ 1,900
Nulogix, Inc.
Business Acquisition [Line Items]
Ownership percentage	75.00%						25.00%
Equity method investment realized gain (loss)	$ (504)
Fixed assets acquired	189
Goodwill acquired	1,400
Payments to acquire equity method investments	1,500						$ 2,000
Intangible assets acquired	732
Deferred tax liability	$ 278
Ventura County Imaging Group, LLC
Business Acquisition [Line Items]
Fixed assets acquired			$ 4,300
Noncompete Agreements | Hudson Valley Radiology Associates
Business Acquisition [Line Items]
Intangible assets acquired				50
Trade Names | Hudson Valley Radiology Associates
Business Acquisition [Line Items]
Intangible assets acquired				380
Primedex Health Systems, Inc. and Radiologix | Hudson Valley Radiology Associates
Business Acquisition [Line Items]
Unfavorable lease contracts				$ 2,800