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Commitments And Contingencies (Tables)
 12 Months Ended
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Rental Payments Under All Non-Cancelable Operating Leases
 
Office
Space
 
Transportation
Equipment
 
Terminals and
Tanks
 
Total
2013
$
1,006

 
$
12,273

 
$
6,006

 
$
19,285

2014
1,219

 
13,965

 
6,129

 
21,313

2015
1,207

 
12,166

 
2,571

 
15,944

2016
1,173

 
8,488

 
2,374

 
12,035

2017
1,029

 
6,236

 
2,374

 
9,639

2018 and thereafter
5,169

 
13,431

 
24,545

 
43,145

Total minimum lease obligations
$
10,803

 
$
66,559

 
$
43,999

 
$
121,361
Total Operating Lease Expense
Year Ended December 31, 2012
$
21,624

Year Ended December 31, 2011
$
18,331

Year Ended December 31, 2010
$
15,692