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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies [Abstract]  
Aggregate minimum rental commitments
The approximate aggregate minimum rental commitments at December 31, 2013, are as follows:
 
 
 
Amount
 
Year
 
 
2014
 
$
1,952
 
2015
  
1,900
 
2016
  
1,543
 
2017
  
830
 
2018
  
3
 
Total
 
$
6,228