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5. GOODWILL AND OTHER INTANGIBLE ASSETS (Details - Schedule of Goodwill) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill, beginning balance	$ 239,408	$ 200,304
Goodwill allocated to assets held for sale	(1,126)
Adjustments to preliminary allocations of purchase price	(47)	200
Goodwill, ending balance	239,553	239,408
New Jersey Imaging Powers, Inc. [Member]
Goodwill allocated to assets held for sale		(18,833)
California Radiology [Member]
Goodwill acquired through acquisitions		2,107
New York Radiology Partners [Member]
Goodwill acquired through acquisitions		9,897
Hanford Imaging, L.P. [Member]
Goodwill acquired through acquisitions		785
Murray Hill Radiology [Member]
Goodwill acquired through acquisitions		4,123
Philip L. Chatham [Member]
Goodwill acquired through acquisitions		790
Diagnostic Imaging Group, LLC [Member]
Goodwill acquired through acquisitions		$ 40,035
Advanced Radiological Imaging [Member]
Goodwill acquired through acquisitions	1,280
Landmark Imaging [Member]
Goodwill acquired through acquisitions	$ 38

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ References

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-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 1
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