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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Reconciliation of Amounts Used in Calculating Basic and Diluted Net Income (Loss) Per Share
The following is a reconciliation of the amounts used in calculating basic and diluted net income per share (in thousands, except share and per share data):
 
For the three months ended
 
For the nine months ended
 
September 30,
 
September 30,
 
2017
 
2016
 
2017
 
2016
Numerator:
 
 
 
 
 
 
 
Net income attributable to common shareholders
$
14,392

 
$
13,355

 
$
24,055

 
$
28,823

Dividends paid on unvested shares and units
(64
)
 
(48
)
 
(171
)
 
(141
)
Undistributed earnings allocated to unvested shares and units
—

 
—

 
—

 
—

Net income attributable to common shareholders
$
14,328

 
$
13,307

 
$
23,884

 
$
28,682

Denominator:
 
 
 
 
 
 
 
Weighted average number of common shares - basic
39,298,974

 
38,307,382

 
38,731,900

 
38,293,704

Unvested shares
251,520

 
260,080

 
228,555

 
226,985

Weighted average number of common shares - diluted
39,550,494

 
38,567,462

 
38,960,455

 
38,520,689

Basic income per Common Share:
 
 
 
 
 
 
 
Net income attributable to common shareholders per weighted average basic common share
$
0.36

 
$
0.35

 
$
0.62

 
$
0.75

Diluted income per Common Share:
 
 
 
 
 
 
 
Net income attributable to common shareholders per weighted average diluted common share
$
0.36

 
$
0.35

 
$
0.61

 
$
0.74