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Customer Advances In Excess Of Costs Incurred On Contracts In Progress (Tables)
 12 Months Ended
Dec. 31, 2012
Customer Advances In Excess Of Costs Incurred On Contracts In Progress [Abstract]  
Schedule Of Customer Advances
 
 
December 31,
 
 
 
2012
 
 
2011
 
Advances received
 
$
782,482
 
 
$
750,161
 
Less -
 
 
  
 
 
 
 
 
  Advances presented under long-term liabilities
 
 
156,497
 
 
 
154,696
 
  Advances deducted from inventories
 
 
  104,297
 
 
 
150,195
 
 
 
  
521,688
 
 
 
445,270
 
Less -
 
    
 
 
 
 
 
  Costs incurred on contracts in progress (See Note 5)
 
 
68,306
 
 
 
38,048
 
 
 
$
453,382
 
 
$
407,222