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Commitment and Contingencies Disclosure (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Limited liability project reflected on consolidated balance sheet
The total assets and liabilities of Dakota Prairie Refining reflected on the Company's Consolidated Balance Sheets at December 31 were as follows:

 
2013

 
(In thousands)

Assets
 
Current assets:
 
Cash and cash equivalents
$
4,774

Other current assets
26

Total current assets
4,800

Net property, plant and equipment
172,073

Total assets
$
176,873

Liabilities
 
Current liabilities:
 
Long-term debt due within one year
$
3,000

Accounts payable
8,904

Taxes payable
5

Accrued compensation
26

Other accrued liabilities
461

Total current liabilities
12,396

Long-term debt
72,000

Total liabilities
$
84,396