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Earnings per Common Share
9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings per Common Share
Earnings per Common Share
Basic earnings per share are based on the weighted average number of shares of common stock outstanding. Diluted earnings per share are based upon the weighted average number of shares of common stock outstanding plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method.
The following table reconciles the number of common shares used in calculating the basic and diluted net earnings per share:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Basic average common shares outstanding1
16,457,991

 
16,844,920

 
16,466,325

 
17,141,329

Incremental shares due to:
 
 
 
 
 
 
 
Restricted stock units
42,122

 
54,796

 
37,021

 
35,853

Performance shares
50,506

 
104,476

 
42,914

 
74,604

Stock options
16,265

 
55,466

 
26,347

 
1,148

Diluted average common shares outstanding
16,566,884

 
17,059,658

 
16,572,607

 
17,252,934

 
 
 
 
 
 
 
 
Basic net earnings per common share
$
0.05

 
$
0.05

 
$
1.00

 
$
2.35

Diluted net earnings per common share
0.05

 
0.05

 
0.99

 
2.33

 
 
 
 
 
 
 
 
Anti-dilutive shares excluded from calculation
468,624

 
5,783

 
525,655

 
502,293

1 
Basic average common shares outstanding include restricted stock awards that are fully vested, but are deferred for future issuance.