Income per Common Share of the Trust (Tables)

6 Months Ended

Jun. 30, 2012

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, 2012					June 30, 2011
	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	$	31,110	116,683	$	0.26	$	32,717	114,623	$	0.28
Dilutive shares for long-term compensation plans	—		876			—		783
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	31,110		117,559	$	0.26	32,717		115,406	$	0.28
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	3,001		116,683	$	0.03	52,261		114,623	$	0.46
Dilutive shares for long-term compensation plans	—		876			—		783
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	3,001		117,559	$	0.03	52,261		115,406	$	0.46
Basic income per common share
Net income available to common shareholders	34,111		116,683	$	0.29	84,978		114,623	$	0.74
Dilutive shares for long-term compensation plans	—		876			—		783
Diluted income per common share
Net income available to common shareholders	$	34,111	117,559	$	0.29	$	84,978	115,406	$	0.74

	For the Six Months Ended					For the Six Months Ended
	June 30, 2012					June 30, 2011
	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	$	63,551	116,359	$	0.54	$	57,513	114,285	$	0.51
Dilutive shares for long-term compensation plans	—		806			—		802
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	63,551		117,165	$	0.54	57,513		115,087	$	0.50
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	7,649		116,359	$	0.07	56,374		114,285	$	0.49
Dilutive shares for long-term compensation plans	—		806			—		802
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	7,649		117,165	$	0.07	56,374		115,087	$	0.49
Basic income per common share
Net income available to common shareholders	71,200		116,359	$	0.61	113,887		114,285	$	1.00
Dilutive shares for long-term compensation plans	—		806			—		802
Diluted income per common share
Net income available to common shareholders	$	71,200	117,165	$	0.61	$	113,887	115,087	$	0.99