OTHER INVESTMENTS (Details 1) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 836,000	$ 477,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	247,000	5,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,083,000	482,000
Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(73,000)	(48,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(19,000)	(11,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(92,000)	(59,000)
Other (private banks, etc.) [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	286,000	242,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	242,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	528,000	242,000
Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(14,000)	(8,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(8,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(22,000)	(8,000)
Partnerships owning investments in technology related industries [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	5,000	5,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	5,000	5,000
Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(11,000)	(11,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(11,000)	(11,000)
Partnerships owning diversified businesses investments [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	455,000	190,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	455,000	190,000
Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(45,000)	(10,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(45,000)	(10,000)
Partnerships owning real estate and related investments [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	95,000	45,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	95,000	45,000
Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(14,000)	(30,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	$ (14,000)	$ (30,000)