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Net Income per Share
 12 Months Ended
Dec. 31, 2017
Net Income per Share [Abstract]  
Net Income per Share

(9)  Net Income per Share  

We compute net income per share using the two-class method, which is an allocation formula that determines net income per share for common stock and participating securities, which for us are our outstanding RSUs. 

The following table (in thousands, except per share amounts) sets forth the computation of net income per share:





 

 

 

 

 

 

 

 

 



 

2017

 

2016

 

2015

Numerator:

 

 

 

 

 

 

 

 

 

Net income

 

$

 33,076 

 

$

 12,510 

 

$

 20,132 

Less earnings allocated to RSUs

 

 

 (1,028)

 

 

 (305)

 

 

 (450)

Net income allocated to common shareholders

 

$

 32,048 

 

$

 12,205 

 

$

 19,682 



 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

Denominator:

 

 

 

 

 

 

 

 

 

Weighted average number of common shares outstanding

 

 

 29,661 

 

 

 29,260 

 

 

 29,031 



 

 

 

 

 

 

 

 

 

Net income per share:

 

 

 

 

 

 

 

 

 

Basic and diluted

 

$

 1.08 

 

$

 0.42 

 

$

 0.68