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Receivables (Tables)
 3 Months Ended
Mar. 31, 2013
Receivables [Abstract]  
Schedule of Receivables
 
March 31, 2013
 
December 31, 2012
Accounts receivable
$
1,018

 
$
922

Less: allowance for doubtful accounts
(32
)
 
(37
)
Net trade receivables
986

 
885

Miscellaneous receivables
189

 
172

Receivables, net
$
1,175

 
$
1,057