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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Reconciliation of Earnings (Loss) and Number of Shares Used in Calculating Diluted Earnings (Loss) Per Share
The following is a reconciliation of the earnings and number of shares used in calculating the diluted earnings per share for Common Stock and Class A Common Stock (in thousands):

 
 
Three Months Ended
September 30,
  
Nine Months Ended
September 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Numerator:
 
  
  
  
 
Common:
 
  
  
  
 
Distributed earnings
 
$
1,603
  
$
766
  
$
3,180
  
$
1,528
 
Undistributed earnings
  
6,901
   
2,134
   
16,900
   
5,552
 
Basic
  
8,504
   
2,900
   
20,080
   
7,080
 
Class A Common earnings
  
990
   
414
   
2,504
   
1,052
 
Diluted
 
$
9,494
  
$
3,314
  
$
22,584
  
$
8,132
 
 
                
Class A Common:
                
Distributed earnings
 
$
185
  
$
108
  
$
384
  
$
222
 
Undistributed earnings
  
805
   
306
   
2,120
   
830
 
 
 
$
990
  
$
414
  
$
2,504
  
$
1,052
 
Denominator:
                
Common:
                
Weighted average shares outstanding - basic
  
20,047
   
19,163
   
19,786
   
19,018
 
Assumed conversion of Class A Common Stock
  
2,455
   
2,887
   
2,606
   
2,986
 
Dilutive options, awards and common stock equivalents
  
353
   
321
   
391
   
315
 
 
                
Total weighted-average diluted Common Stock
  
22,855
   
22,371
   
22,783
   
22,319
 
 
                
Class A Common:
                
Weighted average shares outstanding
  
2,455
   
2,887
   
2,606
   
2,986
 
Antidilutive shares excluded from the denominator due to the options' exercise prices being greater than the average market price
  
—
   
291
   
—
   
292