PROPERTY AND EQUIPMENT (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 96,608,000	$ 95,180,000
Accumulated depreciation	(46,572,000)	(43,799,000)
Net property and equipment	50,036,000	51,381,000
Medical Equipment and Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	82,151,000	86,712,000
Accumulated depreciation	(11,269,000)	(9,858,000)
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	721,000	749,000
Deposits and Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	8,736,000	4,719,000
Deposits Towards Purchase of Proton Beam Systems [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 5,000,000	$ 3,000,000