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Earnings per share of QTS Realty Trust, Inc. (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings per Share [Abstract]  
Summary of Basic and Diluted Earnings Per Share

The computation of basic and diluted net income per share is as follows (in thousands, except per share data, and unaudited):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Six Months Ended

 

 

June 30,

 

June 30,

 

    

2017

    

2016

    

2017

    

2016

Numerator:

 

 

 

 

 

 

 

 

 

 

 

 

Net income available to common stockholders - basic

 

$

4,040

 

$

5,100

 

$

8,917

 

$

10,989

Effect of net income attributable to noncontrolling interests and income allocated to participating securities

 

 

356

 

 

707

 

 

814

 

 

1,677

Net income available to common stockholders

 

$

4,396

 

$

5,807

 

$

9,731

 

$

12,666

Denominator:

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average shares outstanding - basic

 

 

47,666

 

 

47,783

 

 

47,562

 

 

44,538

Effect of Class A and Class RS partnership units 

 

 

6,783

 

 

6,794

 

 

6,783

 

 

6,797

Effect of Class O units and options to purchase Class A common stock and restricted Class A common stock on an "as if" converted basis *

 

 

1,009

 

 

998

 

 

991

 

 

939

Weighted average shares outstanding - diluted

 

 

55,458

 

 

55,575

 

 

55,336

 

 

52,274

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic net income per share

 

$
0.08

 

$
0.11

 

$
0.18

 

$
0.25

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted net income per share

 

$
0.08

 

$
0.10

 

$
0.17

 

$
0.24

 

*

The Class A units, Class RS units and Class O units represent limited partnership interests in the Operating Partnership, and are described in more detail in Note 8.