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INVESTMENT IN EQUITY SECURITIES (Details Textual) (USD $)	12 Months Ended			0 Months Ended		1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2012	Sep. 05, 2007 Series B Convertible Preferred Stock [Member]	Apr. 10, 2006 Series B Convertible Preferred Stock [Member]	Jan. 31, 2012 Mevion Medical Systems Inc [Member]	Oct. 31, 2008 Mevion Medical Systems Inc [Member]	Jun. 30, 2013 Mevion Medical Systems Inc [Member]	Sep. 05, 2007 Mevion Medical Systems Inc [Member]	Apr. 10, 2006 Mevion Medical Systems Inc [Member]
Schedule of Cost-method Investments [Line Items]
Cost Method Investments	$ 2,701,000	$ 2,687,000				$ 45,000,000		$ 55,000,000	$ 617,000	$ 2,000,000
Conversion of Stock, Shares Issued				588,000	2,353,000
Proceeds from Sale of Other Investments							65,000,000
Stockholders Equity, Reverse Stock Split	In mid-2011, Mevion performed a reverse stock split of all shares in which 100 shares were converted to one share.
Initially Funded Percentage						55.00%
Remaining Funded Percentage						45.00%
Additional Cost Method Investments			70,000
Investment Percentage In Common Stock	0.77%
Unrealized Gain on Investments	$ 2,400,000

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Percentage of initially funded for accelerate the manufacturing and worldwide deployment of the Mevion.

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Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

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Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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