Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2014

Unrealized Gain (Loss) on Investments [Abstract]

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

(Amounts in thousands)		As of June 30, 2014						As of December 31, 2013
				GAAP		Unrealized				GAAP		Unrealized
		Fair Value		Cost		Gain		Fair Value		Cost		Gain
Equity securities:
	Lexington Realty Trust	$	203,344	$	72,549	$	130,795	$	188,567	$	72,549	$	116,018
	Other		3,573		56		3,517		3,350		59		3,291
		$	206,917	$	72,605	$	134,312	$	191,917	$	72,608	$	119,309