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5. GOODWILL AND OTHER INTANGIBLE ASSETS (Details - Schedule of Goodwill) (USD $) In Thousands, unless otherwise specified |  |  |  |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2011 Imaging On Call, LLC | Dec. 31, 2011 Stuart London, MD | Dec. 31, 2011 Diagnostic Health | Dec. 31, 2011 Hematology-Oncology | Dec. 31, 2011 Image Medical Corp. | Dec. 31, 2011 Progressive Health | Dec. 31, 2011 Presgar Imaging | Dec. 31, 2011 Radar, LLC | Dec. 31, 2012 Raven Holdings, U.S. | Dec. 31, 2011 Raven Holdings, U.S. | Dec. 31, 2012 Camarillo Imaging | Dec. 31, 2012 West Coast Radiology | Dec. 31, 2012 Advanced Medical Imaging | Dec. 31, 2012 Orthopedic Imaging | Dec. 31, 2012 Upper Chesapeake Imaging | Dec. 31, 2012 Vanowen Radiology | Dec. 31, 2012 Clinical Radiology | Dec. 31, 2012 Lenox Hill Radiology | Dec. 31, 2013 Mission Viejo, CA | Dec. 31, 2013 Lenox Hill Radiology | Dec. 31, 2013 Park West | Dec. 31, 2013 Brooklyn, NY | Dec. 31, 2013 Northfield, NJ | Dec. 31, 2013 South Valley Radiology Imaging LLC
Goodwill, beginning balance | $ 196,395 | $ 193,871 | $ 159,507 | $ 143,353 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired through acquisitions |  |  |  |  | 3,799 | 600 | 2,009 | 1,016 |  |  |  | 845 |  | 3,918 | 86 | 5,395 | 923 | 302 | 1,849 | 386 | 1,838 | 15,690 | 185 |  | 2,047 | 4,026 | (1,000) | 305
Adjustments to preliminary allocations of purchase price |  |  |  |  |  |  |  |  | 2,443 | 1,369 | 155 |  | 7,895 |  |  |  |  |  |  |  |  |  |  | (3,219) |  |  |  |
Goodwill, ending balance | 196,395 | 193,871 | 159,507 | 143,353 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes | $ 116,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- 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 -URI http://asc.fasb.org/extlink&oid=14024403&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 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + 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=14024403&loc=d3e13816-109267 + Details
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