5. OTHER INVESTMENTS (Detail) - (Table 1) Net Investment Income from Other Investments (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income from other investments	$ 90,000	$ 48,000
Partnership owning real estate & related
Net income from other investments	33,000
Partnership owning diversified businesses
Net income from other investments	26,000	31,000
Venture capital fund - technology
Net income from other investments
Income from investment in affiliate -T.G.I.F. Texas, Inc.
Net income from other investments	$ 31,000	$ 17,000