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