Income Per Share and Partnership Unit (Tables)
6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Reconciliation of the Numerator and Denominator Used in the Computation of Basic and Diluted Income Per Share
The table below is a reconciliation of the numerator and denominator used in the computation of basic and diluted net income per share and unit computed using the two-class method (dollars in thousands):
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2018
 
2017
 
2018
 
2017
Basic and diluted income:
 
 
 
 
 
 
 
Income (loss) from continuing operations
$
24,817

 
$
3,773

 
$
62,895

 
$
(3,097
)
Less: income attributable to unvested restricted stock
(345
)
 
(183
)
 
(728
)
 
(417
)
Less: dividends paid to preferred stockholders
(2,588
)
 

 
(5,176
)
 

Income (loss) used in basic and diluted income (loss) per share from continuing operations
21,884

 
3,590

 
56,991

 
(3,514
)
(Loss) income used in basic and diluted (loss) income per share from discontinued operations
(7,653
)
 
19,433

 
(15,013
)
 
39,132

Net income attributable to common stockholders used in basic and diluted income per share
$
14,231

 
$
23,023

 
$
41,978

 
$
35,618

 
 
 
 
 
 
 
 
Basic weighted average shares of common stock outstanding:
 
 
 
 
 
 
 
Weighted average shares of common stock outstanding
430,140,787

 
480,251,922

 
438,266,822

 
481,992,408

Less: Unvested weighted average shares of restricted stock
(2,006,547
)
 
(1,149,654
)
 
(1,808,234
)
 
(1,147,357
)
Weighted average shares of common stock outstanding used in basic income per share
428,134,240

 
479,102,268

 
436,458,588

 
480,845,051

Net income per share attributable to common stockholders - basic:
 
 
 
 
 
 
 
Continuing operations
$
0.05

 
$
0.01

 
$
0.13

 
$
(0.01
)
Discontinued operations
(0.02
)
 
0.04

 
(0.03
)
 
0.08

Net income per share attributable to common stockholders - basic
$
0.03

 
$
0.05

 
$
0.10

 
$
0.07

 
 
 
 
 
 
 
 
Dilutive weighted average shares of common stock outstanding: (1)
 
 
 
 
 
 
 
Unvested performance shares
884,694

 

 
557,563

 

Weighted average shares of common stock outstanding used in diluted income per share
429,018,934

 
479,102,268

 
437,016,151

 
480,845,051

Net income per share attributable to common stockholders - diluted
 
 
 
 
 
 
 
Continuing operations
$
0.05

 
$
0.01

 
$
0.13

 
$
(0.01
)
Discontinued operations
(0.02
)
 
0.04

 
(0.03
)
 
0.08

Net income per share attributable to common stockholders - diluted
$
0.03

 
$
0.05

 
$
0.10

 
$
0.07

 
 
 
 
 
 
 
 
Potentially dilutive shares of common stock
 
 
 
 
 
 
 
Unvested shares of restricted stock
424,536

 

 
338,981

 
48,491

Total
424,536

 

 
338,981

 
48,491


(1)  Assumes the most dilutive issuance of potentially issuable shares between the two-class and treasury stock method unless the result would be anti-dilutive.