Income per Common Share of the Trust (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [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):

	For the Three Months Ended					For the Three Months Ended
	September 30, 2017					September 30, 2016
	Income (Numerator)		Weighted Average Shares (Denominator)	Per Share		Income (Numerator)		Weighted Average Shares (Denominator)	Per Share
Net income available to common shareholders - basic	$	59,539	146,811	$	0.41	$	54,253	146,215	$	0.37
Dilutive shares for long-term compensation plans	—		785			—		892
Net income available to common shareholders - diluted	$	59,539	147,596	$	0.40	$	54,253	147,107	$	0.37
	For the Nine Months Ended					For the Nine Months Ended
	September 30, 2017					September 30, 2016
	Income (Numerator)		Weighted Average Shares (Denominator)	Per Share		Income (Numerator)		Weighted Average Shares (Denominator)	Per Share
Net income available to common shareholders - basic	$	153,982	146,678	$	1.05	$	161,434	146,121	$	1.10
Dilutive shares for long-term compensation plans	—		752			—		667
Net income available to common shareholders - diluted	$	153,982	147,430	$	1.04	$	161,434	146,788	$	1.10