Income per Common Share of the Trust (Tables)

12 Months Ended

Dec. 31, 2013

Income per Common Share of the Trust [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted income per common share of the Trust (in thousands except per share amounts):

	2013					2012
	Income (Numerator)		Weighted Average Shares (Denominator)	Per Share		Income (Numerator)		Weighted Average Shares (Denominator)	Per Share
Basic income from continuing operations
Income from continuing operations net of noncontrolling interest	$	91,274	130,180	$	0.70	$	88,008	116,863	$	0.75
Dilutive shares for long-term compensation plans	—		729			—		831
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	91,274		130,909	$	0.70	88,008		117,694	$	0.75
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	118,464		130,180	$	0.91	49,428		116,863	$	0.43
Dilutive shares for long-term compensation plans	—		729			—		831
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	118,464		130,909	$	0.90	49,428		117,694	$	0.42
Basic income per common share
Net income available to common shareholders	209,738		130,180	$	1.61	137,436		116,863	$	1.18
Dilutive shares for long-term compensation plans	—		729			—		831
Diluted income per common share
Net income available to common shareholders	$	209,738	130,909	$	1.60	$	137,436	117,694	$	1.17

	2011
	Income (Numerator)		Weighted Average Shares (Denominator)	Per Share
Basic income from continuing operations
Income from continuing operations net of noncontrolling interest	$	81,392	114,755	$	0.71
Dilutive shares for long-term compensation plans	—		748
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	81,392		115,503	$	0.70
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	102,607		114,755	$	0.89
Dilutive shares for long-term compensation plans	—		748
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	102,607		115,503	$	0.89
Basic income per common share
Net income available to common shareholders	183,999		114,755	$	1.60
Dilutive shares for long-term compensation plans	—		748
Diluted income per common share
Net income available to common shareholders	$	183,999	115,503	$	1.59