Income per Common Share of the Trust (Tables)

6 Months Ended

Jun. 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
	June 30, 2017					June 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	$	51,411	146,688	$	0.35	$	49,627	145,995	$	0.34
Dilutive shares for long-term compensation plans	—		820			—		740
Net income available to common shareholders - diluted	$	51,411	147,508	$	0.35	$	49,627	146,735	$	0.34
	For the Six Months Ended					For the Six Months Ended
	June 30, 2017					June 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	$	94,443	146,602	$	0.64	$	107,181	146,002	$	0.73
Dilutive shares for long-term compensation plans	—		753			—		620
Net income available to common shareholders - diluted	$	94,443	147,355	$	0.64	$	107,181	146,622	$	0.73