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Net Income Per Common Share
 6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Net Income per Common Share
Net Income (Loss) per Common Share
  
The components of basic and diluted net income (loss) per share were as follows (in thousands, except per share amounts):
 
Three Months Ended
 
Six Months Ended
 
June 30,
2018
 
July 1,
2017
 
June 30,
2018
 
July 1,
2017
Net income (loss)
$
3,744

 
$
(778
)
 
$
24,292

 
$
23,683

 
 
 
 
 
 
 
 
Reconciliation of weighted-average shares outstanding:
 
 
 

 
 
 
 
Basic weighted-average shares outstanding
36,138

 
41,716

 
37,191

 
42,233

Dilutive effect of stock-based awards
706

 
—

 
905

 
847

Diluted weighted-average shares outstanding
36,844

 
41,716

 
38,096

 
43,080

 
 
 
 
 
 
 
 
Net income (loss) per share – basic
$
0.10

 
$
(0.02
)
 
$
0.65

 
$
0.56

Net income (loss) per share – diluted
$
0.10

 
$
(0.02
)
 
$
0.64

 
$
0.55


For the three months ended June 30, 2018 and the six months ended June 30, 2018 and July 1, 2017, anti-dilutive stock-based awards excluded from the diluted net income per share calculations were immaterial. For the three months ended July 1, 2017, potentially dilutive stock-based awards have been excluded from the calculation of diluted weighted-average shares outstanding, as their inclusion would have had an anti-dilutive effect on our net loss per diluted share.