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Impairment of Long-Lived Assets (Tables)
3 Months Ended
Mar. 31, 2013
Impairment [Abstract]  
Details of impairment of long-lived assets by asset
 
 
Three Months Ended
 
 
April 1,
2012
Properties and intangible assets
 
$
2,883

Aircraft
 
1,628

 
 
$
4,511