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PROPERTY AND EQUIPMENT (Details Textual) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016
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Property, Plant and Equipment [Line Items] |  |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | $ 51,666,000 | $ 53,549,000
Property, Plant and Equipment, Net, Total | 48,491,000 | 51,331,000
Construction in Progress, Gross | 1,658,000 |
Medical Equipment and Facilities [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Capital Leased Assets, Gross | 44,758,000 | 43,703,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | 16,777,000 | $ 16,642,000
Radiation Oncology Physician Group [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Long Term Purchase Commitment Deposits For Assets | 400,000 |
Three Mevion S250 Proton Beam Radiation Therapy [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Long Term Purchase Commitment Deposits For Assets | 2,000,000 |
Gamma Knife Units [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Net, Total | $ 729,000 |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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