PROPERTY AND EQUIPMENT (Details Textual) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
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