Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2014

Unrealized Gain (Loss) on Investments [Abstract]

Unrealized Gain (Loss) on Investments [Table Text Block]

(Amounts in thousands)		As of September 30, 2014						As of December 31, 2013
				GAAP		Unrealized				GAAP		Unrealized
		Fair Value		Cost		Gain		Fair Value		Cost		Gain
Equity securities:
	Lexington Realty Trust	$	180,811	$	72,549	$	108,262	$	188,567	$	72,549	$	116,018
	Other		3,343		57		3,286		3,350		59		3,291
		$	184,154	$	72,606	$	111,548	$	191,917	$	72,608	$	119,309