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Earnings per Share
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
We calculate basic earnings per share by dividing net income by the weighted average number of common shares outstanding, excluding unvested restricted shares. We calculate diluted earnings per share by dividing net income by the weighted average number of common shares outstanding plus the dilutive effect of outstanding share-based awards, including restricted stock awards, restricted stock units, performance shares, and stock options. Antidilutive or out-of-the-money common stock equivalents excluded from the diluted earnings per share calculation for the quarter and year-to-date during fiscal 2017 include all outstanding options and performance shares; and, additionally, for year-to-date only, an immaterial number of restricted stock units.
The following table shows the computation of basic and diluted earnings per share (in thousands, except per share data):
 
Three months ended
 
Nine months ended
 
September 30, 2017
 
October 1, 2016
 
September 30, 2017
 
October 1, 2016
Net income
$
5,686

 
$
15,008

 
$
9,508

 
$
5,720

 
 
 
 
 
 
 
 
Basic weighted shares outstanding
9,079

 
8,900

 
9,033

 
8,891

Dilutive effect of share-based awards
164

 
30

 
152

 
72

Diluted weighted average shares outstanding
9,243

 
8,930

 
9,185

 
8,963

 
 
 
 
 
 
 
 
Basic earnings per share
$
0.63

 
$
1.69

 
$
1.05

 
$
0.64

Diluted earnings per share
$
0.62

 
$
1.68

 
$
1.04

 
$
0.64