7. Fair Value Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Fair value measurement at reporting date using
	Total December 31,		Quoted Prices  in Active Markets for  Identical Assets		Significant Other Observable Inputs		Significant Unobservable  Inputs
Description	2012		(Level 1)		(Level 2)		(Level 3)
Assets:
Cash equivalents:
Time deposits	$	54,000		—	$	54,000		—
Money market mutual funds		783,000	$	783,000		—		—
Marketable securities:
Corporate debt securities		662,000		—		662,000		—
Marketable equity securities		1,497,000		1,497,000		—		—
Total assets	$	2,996,000	$	2,280,000	$	716,000	$	—
Liabilities:
Interest rate swap contract		1,965,000		—		1,965,000		—
Total liabilities	$	1,965,000		—	$	1,965,000		—

	Fair value measurement at reporting date using
	Total December 31,		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	2011		(Level 1)		(Level 2)		(Level 3)
Assets:
Cash equivalents:
Time deposits	$	54,000		—	$	54,000		—
Money market mutual funds		1,537,000	$	1,537,000		—		—
Marketable securities:
Corporate debt securities		885,000		—		885,000		—
Marketable equity securities		1,134,000		1,134,000		—		—
Total assets	$	3,610,000	$	2,671,000	$	939,000	$	—
Liabilities:
Interest rate swap contract		1,975,000		—		1,975,000		—
Total liabilities	$	1,975,000		—	$	1,975,000		—

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]

	Fair value measurement at reporting date using
	Total December 31,		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs		Total losses for year ended
Description	2012		(Level 1)		(Level 2) (a)		(Level 3) (b)		12/31/2012
Assets:
Other investments by investment focus:
Technology & Communication	$	514,000	$	—	$	514,000	$	—	$	—
Diversified businesses		1,337,000		—		1,337,000		—		—
Real estate and related		1,453,000		—		500,000		953,000		28,000
Other		300,000		—		—		300,000		—
	$	3,604,000	$	—	$	2,351,000	$	1,253,000	$	28,000
Goodwill (Bayshore)		5,628,000						5,628,000		—
Total assets	$	9,232,000	$	—	$	2,351,000	$	6,881,000	$	28,000

	Fair value measurement at reporting date using
	Total December 31,		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs		Total losses for year ended
Description	2011		(Level 1)		(Level 2) (a)		(Level 3) (b)		12/31/2011
Assets:
Other investments by investment focus:
Technology & Communication	$	478,000	$	—	$	478,000	$	—	$	2,000
Diversified businesses		1,445,000		—		1,445,000		—		—
Real estate and related		1,523,000		—		542,000		981,000		84,000
Other		300,000		—		—		300,000		—
	$	3,746,000	$	—	$	2,465,000	$	1,281,000	$	86,000
Goodwill (Bayshore)		5,628,000						5,628,000		—
Total assets	$	9,374,000	$	—	$	2,465,000	$	6,909,000	$	86,000

Fair Value, Investment Roll-foward within Level 3 [Table Text Block]

	Level 3 Investments:
Balance at January 1, 2012	$	1,281,000
Additional investment in limited partnership		—
Other than temporary impairment loss		(28,000	)
Transfers from Level 2		—
Balance at December 31, 2012	$	1,253,000