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PROPERTY AND EQUIPMENT (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 100,702,000	$ 100,157,000
Accumulated depreciation	(54,008,000)	(51,666,000)
Net property and equipment	46,694,000	48,491,000
Medical equipment and facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	94,031,000	95,923,000
Accumulated depreciation	(20,292,000)	(16,777,000)
Office equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	589,000	576,000
Deposits and construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,832,000	1,658,000
Deposits towards purchase of proton beam systems [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,250,000	$ 2,000,000

X

- Definition

The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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