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Accounts Receivable
 9 Months Ended
Sep. 30, 2013
Accounts Receivable, Net [Abstract]  
Accounts Receivable
Accounts Receivable

Accounts receivable, excluding receivables from affiliates, consisted of the following:
 
December 31,
2012
 
September 30,
2013
 
(in thousands)
Accounts receivable, trade
$
32,906

 
$
63,035

Other receivables
205

 
447

Allowance for uncollectible accounts, trade
(103
)
 
(355
)
Accounts receivable, net
$
33,008

 
$
63,127


Accounts receivable from affiliates are $59.5 million and $36.4 million as of December 31, 2012 and September 30, 2013, respectively. For additional information regarding our affiliated receivables, see Note 15.