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Earnings Per Share
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Earnings Per Share

12.       Earnings Per Share

 

Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings per share calculations for the periods indicated:

 

Year ended December 31,  2018   2017   2016 
             
Numerator:               
Net income  $50,933   $52,142   $87,472 
Denominator:               
Weighted average number of common shares outstanding – Basic   17,450,658    17,725,494    18,931,415 
Dilutive effect of options and restricted stock units outstanding under the Company’s employee compensation plans   203,973    213,596    118,100 
Weighted average number of common shares outstanding – Diluted   17,654,631    17,939,090    19,049,515 

 

The dilutive effect of outstanding options and restricted stock units is calculated using the treasury stock method. There are no anti-dilutive stock options in 2018, 2017, and 2016 because the closing price of the Company’s stock on December 31, 2018, 2017, and 2016 exceeded the strike price of all outstanding options on each of those dates.