Income per Common Share of the Trust (Tables)

6 Months Ended

Jun. 30, 2013

Income per Common Share of the Trust [Abstract]

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

	For the Three Months Ended					For the Three Months Ended
	June 30, 2013					June 30, 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	$	33,362	120,081	$	0.27	$	29,449	116,683	$	0.25
Dilutive shares for long-term compensation plans	—		830			—		876
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	$	33,362	120,911	$	0.27	$	29,449	117,559	$	0.25
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	$	6,747	120,081	$	0.06	$	4,662	116,683	$	0.04
Dilutive shares for long-term compensation plans	—		830			—		876
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	$	6,747	120,911	$	0.06	$	4,662	117,559	$	0.04
Basic income per common share
Net income available to common shareholders	$	40,109	120,081	$	0.33	$	34,111	116,683	$	0.29
Dilutive shares for long-term compensation plans	—		830			—		876
Diluted income per common share
Net income available to common shareholders	$	40,109	120,911	$	0.33	$	34,111	117,559	$	0.29

	For the Six Months Ended					For the Six Months Ended
	June 30, 2013					June 30, 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	$	62,762	119,416	$	0.53	$	60,786	116,359	$	0.52
Dilutive shares for long-term compensation plans	—		813			—		806
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	62,762		120,229	$	0.53	60,786		117,165	$	0.52
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	48,586		119,416	$	0.40	10,414		116,359	$	0.09
Dilutive shares for long-term compensation plans	—		813			—		806
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	48,586		120,229	$	0.40	10,414		117,165	$	0.09
Basic income per common share
Net income available to common shareholders	111,348		119,416	$	0.93	71,200		116,359	$	0.61
Dilutive shares for long-term compensation plans	—		813			—		806
Diluted income per common share
Net income available to common shareholders	$	111,348	120,229	$	0.93	$	71,200	117,165	$	0.61