Organization, Basis of Presentation and Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Schedule of earnings per common share

The Company's earnings per common share are determined as follows (dollars in thousands, except per share data):

	For the three months ended
	3/31/2017			3/31/2016
Basic and diluted shares outstanding
Weighted average common shares - basic	137,068,874			136,785,880
Weighted average DownREIT units outstanding	7,500			7,500
Effect of dilutive securities	454,868			589,664
Weighted average common shares - diluted	137,531,242			137,383,044
Calculation of Earnings per Share - basic
Net income attributable to common stockholders	$	235,875		$	237,931
Net income allocated to unvested restricted shares	(652		)	(632		)
Net income attributable to common stockholders, adjusted	$	235,223		$	237,299
Weighted average common shares - basic	137,068,874			136,785,880
Earnings per common share - basic	$	1.72		$	1.73
Calculation of Earnings per Share - diluted
Net income attributable to common stockholders	$	235,875		$	237,931
Add: noncontrolling interests of DownREIT unitholders in consolidated partnerships	11			10
Adjusted net income attributable to common stockholders	$	235,886		$	237,941
Weighted average common shares - diluted	137,531,242			137,383,044
Earnings per common share - diluted	$	1.72		$	1.73