Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

+ References+ Details

This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized.

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- Definition

The entire disclosure for investments accounted for under the cost-method. The carrying amount of such investments may be adjusted, for example, distributions in excess of cost (return of capital) or for other-than-temporary impairments. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries in which the entity does not have the ability to exercise significant influence.

+ References+ Details

- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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+ Details

- Definition

The net cash paid (received) associated with the acquisition or disposal of all investments, including securities and other assets.

+ References+ Details

5. Other Investments (Detail) (USD $)	12 Months Ended					12 Months Ended									12 Months Ended
5. Other Investments (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 HMG/Courtland Properties, Inc. [Member] Other Investments [Member]	Dec. 31, 2011 HMG/Courtland Properties, Inc. [Member] T.G.I.F. Texas, Inc. [Member]	Dec. 31, 2012 Other Investments [Member]	Dec. 31, 2012 T.G.I.F. Texas, Inc. [Member]	Dec. 31, 2011 T.G.I.F. Texas, Inc. [Member]	Dec. 31, 2012 Contributions [Member]	Dec. 31, 2011 Distributions [Member]	Dec. 31, 2011 T.G.I.F. Texas, Inc. [Member]	Dec. 31, 2010 T.G.I.F. Texas, Inc. [Member]	Dec. 31, 2010 Partnership Investing in Technology and Communication Businesses [Member]	Dec. 31, 2012 Partnership Investing in Technology and Communication Businesses [Member]	Dec. 31, 2011 Partnership Investing in Technology and Communication Businesses [Member]	Dec. 31, 2011 Partnership Operating and Leasing Executive Suites, Miami, FL [Member]
Noncontrolling Interest, Ownership Percentage by Parent			3.00%	49.00%
Cost-method Investments, Description [Text Block]	30
Cost Method Investments	$ 3,604,000	$ 3,745,000											$ 514,000	$ 478,000	$ 120,000
Commitments and Contingencies					975,000
Payments for (Proceeds from) Investments								244,000	(211,000)
Impaired Financing Receivable, Recorded Investment								662,000
Investment Income, Dividend						196,000	168,000			168,000	196,000
Other than Temporary Impairment Losses, Investments	$ 27,666	$ 86,707										$ 28,000			$ 84,000