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SEGMENT INFORMATION
 3 Months Ended
Mar. 31, 2012
SEGMENT INFORMATION [Abstract]  
SEGMENT INFORMATION
SEGMENT INFORMATION

Our reportable business segments consist of storage, transportation, and asphalt and fuels marketing. Our segments represent strategic business units that offer different services and products. We evaluate the performance of each segment based on its respective operating income, before general and administrative expenses and certain non-segmental depreciation and amortization expense. General and administrative expenses are not allocated to the operating segments since those expenses relate primarily to the overall management at the entity level. Our principal operations include terminalling and storage of petroleum products, the transportation of petroleum products and anhydrous ammonia, and petroleum refining and marketing. Intersegment revenues result from storage and throughput agreements with related parties at lease rates consistent with rates charged to third parties for storage and at pipeline tariff rates based upon the applicable published tariff.
Results of operations for the reportable segments were as follows:
 
Three Months Ended March 31,
 
2012
 
2011
 
(Thousands of Dollars)
Revenues:
 
 
 
Storage:
 
 
 
Third parties
$
127,687

 
$
125,253

Intersegment
17,045

 
11,392

Related party
697

 
130

Total storage
145,429

 
136,775

Transportation:
 
 
 
Third parties
77,761

 
73,010

Intersegment
—

 
—

Total transportation
77,761

 
73,010

Asphalt and fuels marketing:
 
 
 
Third parties
1,529,547

 
1,036,223

Intersegment
129

 
3,845

Total asphalt and fuels marketing
1,529,676

 
1,040,068

Consolidation and intersegment eliminations
(17,174
)
 
(15,237
)
Total revenues
$
1,735,692

 
$
1,234,616

 
 
 
 
Operating income:
 
 
 
Storage
$
56,147

 
$
48,696

Transportation
36,951

 
34,397

Asphalt and fuels marketing
(15,775
)
 
118

Consolidation and intersegment eliminations
(1
)
 
65

Total segment operating income
77,322

 
83,276

Less general and administrative expenses
27,187

 
25,983

Less other depreciation and amortization expense
1,814

 
1,562

Total operating income
$
48,321

 
$
55,731



Total assets by reportable segment were as follows:
 
March 31,
2012
 
December 31,
2011
 
(Thousands of Dollars)
Storage
$
2,622,491

 
$
2,597,904

Transportation
1,276,156

 
1,251,474

Asphalt and fuels marketing
1,860,324

 
1,717,960

Total segment assets
5,758,971

 
5,567,338

Other partnership assets
324,457

 
313,852

Total consolidated assets
$
6,083,428

 
$
5,881,190