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PROPERTY AND EQUIPMENT (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Net property and equipment | $ 41,480 | $ 46,694
Construction in progress | 1,965 |
Medical Equipment and Facilities |  |
Property, Plant and Equipment [Line Items] |  |
Cost of capital leased assets | 46,642 | 46,559
Associated accumulated depreciation of capital leased assets | 23,782 | $ 20,292
Gamma Knife Units |  |
Property, Plant and Equipment [Line Items] |  |
Net property and equipment | 943 |
Three Mevion S250 Proton Beam Radiation Therapy |  |
Property, Plant and Equipment [Line Items] |  |
Long term purchase commitment deposits for assets | 2,250 |
Radiation Oncology Physician Group |  |
Property, Plant and Equipment [Line Items] |  |
Long term purchase commitment deposits for assets | $ 400 |

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