v2.4.0.8
Long-Term Debt (Summary Of Long-Term Debt) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Aug. 14, 2013
Dec. 31, 2012
Debt Instrument [Line Items]      
Loan for electrical facilities at the Hakinson, North Dakota ethanol plant, 6%, due through 2028 $ 1,136   $ 1,170
6% senior notes due 2012 (net of unamortized discount of $8,639) 491,361 500,000  
Term loan due 2016 (effective rate of 3.71% at September 30, 2013) 150,000    
Less current maturities (48)   (46)
Total long-term debt 642,449   1,124
Interest rate   6.00%  
Effective rate 3.71%    
Loans Payable [Member]
     
Debt Instrument [Line Items]      
Interest rate 6.00%    
Senior Notes [Member]
     
Debt Instrument [Line Items]      
Interest rate 6.00%    
Unamortized discount $ 8,639