v3.7.0.1
Net Income (Loss) Per Common Share (Tables)
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Schedule of Weighted-Average Number of Common Shares
The following table shows the calculation of the diluted weighted-average number of common shares outstanding:
 
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
 
2017
 
2016
 
2017
 
2016
Weighted-average number of common shares outstanding — basic
 
60,273,980

 
58,710,321

 
59,893,356

 
58,662,100

Total dilutive effect of outstanding share-based payments
 

 
933,629

 

 
975,752

Weighted-average number of common shares outstanding — diluted
 
60,273,980

 
59,643,950

 
59,893,356

 
59,637,852

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following potentially dilutive share-based payments were not included in the diluted net income (loss) per common share calculations as the impact would have been antidilutive for the periods presented:
 
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
 
2017
 
2016
 
2017
 
2016
Stock options
 
5,238,465

 
7,376,383

 
5,633,489

 
7,358,351

Restricted stock units
 
1,484,597

 
2,315,818

 
1,877,066

 
2,274,574

Performance awards of restricted stock units
 
2,781,424

 
3,614,784

 
2,758,462

 
3,631,937

Shares to be purchased under employee stock purchase plan
 
12,562

 
12,537

 
6,316

 
6,303