4. INVESTMENTS IN MARKETABLE SECURITIES (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Net Realized Loss	$ (15,000)	$ (12,000)	$ (7,000)	$ 55,000
Trading Securities, Realized Loss	29,000		52,000
Trading Securities, Realized Gain	14,000		45,000
Trading Securities, Net Unrealized Gain Loss	$ 36,000	$ 57,000	$ 61,000	$ 87,000