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Net Income Per Share:
 9 Months Ended
Sep. 30, 2013
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. There were no anti-dilutive options for the three months ended September 30, 2013 and September 30, 2012, respectively. Options that are anti-dilutive because their exercise price exceeded the average market price of the common stock for the period approximated 8,000 and 5,000 for the nine months ended September 30, 2013 and September 30, 2012, respectively.
 
The following table presents the calculation of net earnings per common share (“EPS”) — basic and diluted.
 
 
Three months ended September 30,
 
Nine months ended September 30,
 
2013
 
2012
 
2013
 
2012
Net income
$
11,034

 
$
12,188

 
$
27,086

 
$
28,938

Weighted average number of common shares outstanding (for basic calculation)
14,684

 
14,321

 
14,603

 
14,153

Dilutive securities
640

 
505

 
536

 
460

Weighted average common and common equivalent shares outstanding (for diluted calculation)
15,324

 
14,826

 
15,139

 
14,613

EPS — basic
$
0.75

 
$
0.85

 
$
1.85

 
$
2.04

EPS — diluted
$
0.72

 
$
0.82

 
$
1.79

 
$
1.98