OTHER INVESTMENTS (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 649,000	$ 272,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	477,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	649,000	748,000
Unrealized Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(41,000)	(28,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	(40,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(41,000)	(68,000)
Partnerships Owning Investments In Technology Related Industries [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	151,000	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	5,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	151,000	5,000
Unrealized Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(11,000)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	(12,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(11,000)	(12,000)
Partnerships Owning Diversified Businesses Investments [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	498,000	272,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	184,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	498,000	456,000
Unrealized Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(30,000)	(28,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	0	(16,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	$ (30,000)	(44,000)
Other Private Banks [Member]
Fair Value
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		288,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total		288,000
Unrealized Loss
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss		(12,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total		$ (12,000)