5. OTHER INVESTMENTS (Detail) - (Table 2) Investments in Continuous Unrealized Loss Position (USD $)	Jun. 30, 2013	Dec. 31, 2012
Investment in a Continuous Loss Position For Less Than Twelve Months
Fair Value	$ 8,000	$ 11,000
Unrealized Loss	(10,000)	(10,000)
Investment in a Continuous Loss Position For Less Than Twelve Months | Partnerships owning investments in technology related industries
Fair Value	8,000	11,000
Unrealized Loss	(10,000)	(10,000)
Investments in a Continuous Loss Position For More Than Twelve Months
Fair Value	602,000	846,000
Unrealized Loss	(126,000)	(123,000)
Investments in a Continuous Loss Position For More Than Twelve Months | Partnerships owning investments in technology related industries
Fair Value	370,000	374,000
Unrealized Loss	(78,000)	(69,000)
Investments in a Continuous Loss Position For More Than Twelve Months | Partnership owning diversified businesses
Fair Value		241,000
Unrealized Loss		(5,000)
Investments in a Continuous Loss Position For More Than Twelve Months | Partnership owning real estate & related
Fair Value	232,000	231,000
Unrealized Loss	(48,000)	(49,000)
Other Investment Total
Fair Value	610,000	856,000
Unrealized Loss	(136,000)	(133,000)
Other Investment Total | Partnerships owning investments in technology related industries
Fair Value	378,000	384,000
Unrealized Loss	(88,000)	(79,000)
Other Investment Total | Partnership owning diversified businesses
Fair Value		241,000
Unrealized Loss		(5,000)
Other Investment Total | Partnership owning real estate & related
Fair Value	232,000	231,000
Unrealized Loss	$ (48,000)	$ (49,000)