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Net income per share
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Net income per share
Net income per share
The Company computes basic earnings per share using the weighted average number of common shares outstanding. Diluted earnings per share amounts are calculated using the treasury stock method for equity-based compensation awards. The following is a reconciliation of the numerator and denominator in the basic and diluted net income per common share computations (in thousands, except share and per share data):
 
Three Months Ended March 31,
 
2018
 
2017
Numerator:
 

 
 

Net income
$
690

 
$
2,160

 
 
 
 
Denominator:
 

 
 

Weighted average common shares outstanding - basic
46,435,560

 
44,099,338

Diluted common equivalents from stock options
2,721,065

 
5,119,598

Diluted common equivalents from restricted stock units
127,510

 
255,485

Diluted common equivalents from restricted stock awards
18,636

 
3,453

Weighted average common shares outstanding - diluted
49,302,771

 
49,477,874

 
 
 
 
Net income per share:
 

 
 

Basic
$
0.01

 
$
0.05

Diluted
$
0.01

 
$
0.04

 
 
 
 
Anti-dilutive securities excluded from diluted EPS:
 

 
 

Options to purchase common stock
1,860,957

 
620,000

Restricted stock units
455,566

 
50,000

Restricted stock awards
263,586

 
—

Total
2,580,109

 
670,000