OBLIGATION UNDER CAPITAL LEASE (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
OBLIGATION UNDER CAPITAL LEASE [Abstract]
Equipment financed term	7 years
Equipment capitalized	$ 3,742,000
Monthly payment for capital lease	63,000
Implicit interest rate (in hundredths)	11.00%
Capital Lease Obligations [Abstract]
Capital lease- Gamma Knife	2,271,000	2,702,000
Less current portion	(2,271,000)	(539,000)
Capital lease obligations, noncurrent	0	2,163,000
Capital Leased Assets [Line Items]
Capitalized costs	3,742,000
Future Payments on Lease [Abstract]
2013	2,271,000
Less interest	0
Present value of net minimum obligation	2,271,000
PERFEXION Gamma Knife [Member]
OBLIGATION UNDER CAPITAL LEASE [Abstract]
Equipment capitalized		3,742,000
Capital Leased Assets [Line Items]
Capitalized costs		3,742,000
Less - accumulated depreciation		(1,406,000)
Capitalized lease equipment and improvements- reported as property and equipment - net		$ 2,336,000