Selected Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The tables below are the Company's selected quarterly information for the years ended December 31, 2016 and 2015 (in thousands, except number of properties and per common share or per Common Unit data):

	Quarter Ended
2016	December 31	September 30	June 30	March 31
Rental and related revenue	$204,263	$206,848	$200,520	$201,803
General contractor and service fee revenue	$20,264	$19,351	$26,044	$23,151
General Partner
Net income attributable to common shareholders	$47,755	$112,014	$109,067	$43,307
Basic income per common share	$0.13	$0.32	$0.31	$0.12
Diluted income per common share	$0.13	$0.32	$0.31	$0.12
Weighted average common shares	354,711	351,856	347,464	345,665
Weighted average common shares and potential dilutive securities	359,024	358,981	354,433	349,674
Partnership
Net income attributable to common unitholders	$48,174	$113,145	$110,168	$43,745
Basic income per Common Unit	$0.13	$0.32	$0.31	$0.12
Diluted income per Common Unit	$0.13	$0.32	$0.31	$0.12
Weighted average Common Units	358,135	355,351	350,968	349,163
Weighted average Common Units and potential dilutive securities	359,024	358,981	354,433	349,674
2015	December 31	September 30	June 30	March 31
Rental and related revenue	$198,516	$200,938	$201,996	$214,615
General contractor and service fee revenue	$23,047	$33,599	$23,901	$52,820
General Partner
Net income attributable to common shareholders	$24,252	$76,434	$449,380	$65,244
Basic income per common share	$0.07	$0.22	$1.30	$0.19
Diluted income per common share	$0.07	$0.22	$1.30	$0.19
Weighted average common shares	345,267	345,256	345,098	344,597
Weighted average common shares and potential dilutive securities	349,532	352,150	349,161	348,653
Partnership
Net income attributable to common unitholders	$24,444	$77,185	$454,142	$65,943
Basic income per Common Unit	$0.07	$0.22	$1.30	$0.19
Diluted income per Common Unit	$0.07	$0.22	$1.30	$0.19
Weighted average Common Units	348,769	348,760	348,728	348,292
Weighted average Common Units and potential dilutive securities	349,532	352,150	349,161	348,653