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Net Income Per Share:
 6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Net Income Per Share [Text Block]
Net Income Per Share
 
Net income per share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share is computed by dividing net income by the weighted average number of common shares outstanding plus dilutive securities. Dilutive securities are outstanding common stock options and restricted stock units(excluding stock options with an exercise price in excess of the average market value for the period), less the number of shares that could have been purchased with the proceeds from the exercise of the options, using the treasury stock method. Options that are anti-dilutive because their exercise price exceeded the average market price of the common stock for the period approximated 33,000 for the three months ended June 30, 2015 and 266,000 for the three months ended June 30, 2014. Options that are anti-dilutive because their exercise price exceeded the average market price of the common stock for the period approximated 16,000 for the six months ended June 30, 2015 and 235,000 for the six months ended June 30, 2014.
 
The following table presents the calculation of net earnings per common share (“EPS”) — basic and diluted.
 
 
Three months ended June 30,
 
Six months ended June 30,
 
2015
 
2014
 
2015
 
2014
Net income
$
13,570

 
$
5,878

 
$
23,256

 
$
12,535

Weighted average number of common shares outstanding (for basic calculation)
15,781

 
15,242

 
15,738

 
15,170

Dilutive securities
571

 
120

 
564

 
269

Weighted average common and common equivalent shares outstanding (for diluted calculation)
16,352

 
15,362

 
16,302


15,439

EPS — basic
$
0.86

 
$
0.39

 
$
1.48

 
$
0.83

EPS — diluted
$
0.83

 
$
0.38

 
$
1.43

 
$
0.81