Non-controlling Interests (Tables)

3 Months Ended

Mar. 31, 2016

Non-controlling Interests [Abstract]

Non-controlling Interests [Table Text Block]

The following table summarizes the effect of changes in our ownership interest in subsidiaries on the equity attributable to common shareholders for the periods indicated:

	Three Months Ended March 31,
(in thousands)	2016		2015
Net income attributable to common shareholders	$	41,730	$	115,599
Transfers from non-controlling interests:
Increase in equity for conversion of operating partnership units	134		16
Decrease in additional paid-in capital for purchase of remaining non-controlling ownership interests in two consolidated joint ventures	—		(9,480		)
Change in common equity and net transfers from non-controlling interests	$	41,864	$	106,135