FAIR VALUE INSTRUMENTS - Summary of fair value measurement of investments on a non-recurring basis (Details 1) (USD $)	Dec. 31, 2013		Dec. 31, 2012
Total
Other investments by investment focus:
Other Investments	$ 3,304,000		$ 3,604,000
Goodwill (Bayshore)			5,628,000
Total assets			9,232,000
Total | Technology & Communication
Other investments by investment focus:
Other Investments	472,000		514,000
Total | Diversified businesses
Other investments by investment focus:
Other Investments	1,098,000		1,337,000
Total | Real estate and related
Other investments by investment focus:
Other Investments	1,409,000		1,453,000
Total | Other
Other investments by investment focus:
Other Investments	325,000		300,000
Significant Other Observable Inputs (Level 2)
Other investments by investment focus:
Other Investments	2,032,000	[1]	2,351,000	[1]
Total assets			2,351,000	[1]
Significant Other Observable Inputs (Level 2) | Technology & Communication
Other investments by investment focus:
Other Investments	472,000	[1]	514,000	[1]
Significant Other Observable Inputs (Level 2) | Diversified businesses
Other investments by investment focus:
Other Investments	1,098,000	[1]	1,337,000	[1]
Significant Other Observable Inputs (Level 2) | Real estate and related
Other investments by investment focus:
Other Investments	462,000	[1]	500,000	[1]
Significant Unobservable Inputs (Level 3)
Other investments by investment focus:
Other Investments	1,272,000	[2]	1,253,000	[2]
Goodwill (Bayshore)			5,628,000	[2]
Total assets			6,881,000	[2]
Significant Unobservable Inputs (Level 3) | Real estate and related
Other investments by investment focus:
Other Investments	947,000	[2]	953,000	[2]
Significant Unobservable Inputs (Level 3) | Other
Other investments by investment focus:
Other Investments	325,000	[2]	300,000	[2]
Total gain (losses) on Investment
Other investments by investment focus:
Other Investments	50,000		28,000
Total assets			28,000
Total gain (losses) on Investment | Technology & Communication
Other investments by investment focus:
Other Investments	50,000
Total gain (losses) on Investment | Real estate and related
Other investments by investment focus:
Other Investments			$ 28,000

[1] Other investments measured at fair value on a non recurring basis include investments in certain entities that calculate net asset value per share (or its equivalent such as member units or an ownership interest in partners' capital to which a proportionate share of net assets is attributed, "NAV"). This class primarily consists of private equity funds that have varying investment focus. These investments can never be redeemed with the funds. Instead, the nature of the investments in this class is that distributions are received through the liquidation of the underlying assets of the fund. If these investments were held it is estimated that the underlying assets of the fund would be liquidated over 5 to 10 years. As of December 31, 2013, it is probable that all of the investments in this class will be sold at an amount different from the NAV of the Company's ownership interest in partners' capital. Therefore, the fair values of the investments in this class have been estimated using recent observable information such as audited financial statements and/or statements of partners' capital obtained directly from investees on a quarterly or other regular basis. During the year ended December 31, 2013, the Company received distributions of approximately $511,000 from this type of investment primarily from investments in diversified businesses and real estate. During the year ended December 31, 2013 the Company made contributions totaling $111,000 in this type of investment. As of December 31, 2013, the amount of the Company's unfunded commitments related to the aforementioned investments is approximately $912,000.

[2] Other investments above which are measured on a nonrecurring basis using Level 3 unobservable inputs consist of investments primarily in commercial real estate in Florida through private partnerships and two investments in the stock of private banks in Florida and Texas. The Company does not know when it will have the ability to redeem the investments and has categorized them as a Level 3 fair value measurement. The Level 3 real estate and related investments of approximately $947,000 include one investment in a commercial building located near the Company's offices purchased in 2005 with a carrying value as of December 31, 2013 of $724,000. These investments are measured using primarily inputs provided by the managing member of the partnerships with whom the Company has done similar transactions in the past and is well known to management. The fair values of these real estate investments have been estimated using the net asset value of the Company's ownership interest in partners' capital. The investments in private bank stocks include a South Florida community bank in the amount of $25,000 made in December 2013, a private bank and trust located in Coral Gables, Florida in the amount of $250,000 made in 2009, and a $50,000 investment in a bank located in El Campo, Texas made in 2010. The fair values of these bank stock investments have been estimated using the cost method less distributions received and other than temporary impairments. This investment is valued using inputs provided by the management of the banks.