OTHER INVESTMENTS - Summary of fair value and unrealized losses on other investments (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]
Fair Value	$ 592,000	$ 856,000
Unrealized Loss	(87,000)	(133,000)
Venture capital funds - technology and communications
Schedule of Investments [Line Items]
Fair Value	346,000	384,000
Unrealized Loss	(76,000)	(79,000)
Venture capital funds - diversified businesses
Schedule of Investments [Line Items]
Fair Value		241,000
Unrealized Loss		(5,000)
Real estate and related
Schedule of Investments [Line Items]
Fair Value	246,000	231,000
Unrealized Loss	(11,000)	(49,000)
Position of Less than 12 Months
Schedule of Investments [Line Items]
Fair Value		11,000
Unrealized Loss		(10,000)
Position of Less than 12 Months | Venture capital funds - technology and communications
Schedule of Investments [Line Items]
Fair Value		11,000
Unrealized Loss		(10,000)
Position of Greater than 12 Months
Schedule of Investments [Line Items]
Fair Value	592,000	846,000
Unrealized Loss	(87,000)	(123,000)
Position of Greater than 12 Months | Venture capital funds - technology and communications
Schedule of Investments [Line Items]
Fair Value	346,000	374,000
Unrealized Loss	(76,000)	(69,000)
Position of Greater than 12 Months | Venture capital funds - diversified businesses
Schedule of Investments [Line Items]
Fair Value		241,000
Unrealized Loss		(5,000)
Position of Greater than 12 Months | Real estate and related
Schedule of Investments [Line Items]
Fair Value	246,000	231,000
Unrealized Loss	$ (11,000)	$ (49,000)