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Selected Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2014
Selected Quarterly Financial Data (Unaudited) [Abstract]  
Selected Quarterly Financial Data (Unaudited)
19.            Selected Quarterly Financial Data (Unaudited)

Quarterly results for the year ended December 31, 2014 and 2013 are summarized as follows:

         
         
  
2014
 
   
First
  
Second
  
Third
  
Fourth
 
   
Quarter
  
Quarter
  
Quarter
  
Quarter
 
         
Net sales
 
$
82,646
  
$
99,439
  
$
156,341
  
$
148,650
 
                 
Cost of sales
  
68,576
   
81,493
   
128,250
   
120,781
 
                 
Net earnings
  
2,503
   
3,065
   
1,507
   
2,020
 
                 
Net earnings per share:
                
Class A common share - basic and diluted
 
$
0.20
  
$
0.25
  
$
0.12
  
$
0.16
 
Class B common share - basic and diluted
 
$
0.22
  
$
0.27
  
$
0.13
  
$
0.17
 
                                                   
 2013
   
First
  
Second
  
Third
  
Fourth
 
   
Quarter
  
Quarter
  
Quarter
  
Quarter
 
                 
Net sales
 
$
63,028
  
$
93,981
  
$
101,164
  
$
91,016
 
                 
Cost of sales
  
53,932
   
78,724
   
81,136
   
73,160
 
                 
Net (loss) earnings
  
(558
)
  
1,689
   
7,380
   
7,397
 
                 
(Loss) earnings per share:
                
Class A common share - basic and diluted
 
$
(0.05
)
 
$
0.14
  
$
0.62
  
$
0.61
 
Class B common share - basic and diluted
 
$
(0.05
)
 
$
0.15
  
$
0.65
  
$
0.65