Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v3.2.0.727
Long-Term Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Sep. 30, 2014
Jul. 24, 2015
Apr. 15, 2015
Apr. 09, 2015
Mar. 31, 2015
Debt Instrument [Line Items]                  
Debt extinguishment losses $ (29,536) $ 0 $ (29,536) $ 0          
Debt Issuance Cost     12,600            
Repayments of long-term debt         $ 3,900        
Net borrowings (repayments) on inventory financing arrangements     (2,661) $ (6,294)          
Proceeds from Lines of Credit     4,900            
Repayments of Lines of Credit     (8,900)            
Letters of Credit Outstanding, Amount $ 31,600   $ 31,600            
Seven Point Three Seven Five Percentage Senior Notes Due Two Thousand Nineteen Member                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage 7.375%   7.375%            
Debt Instrument, Repurchased Face Amount $ 14,000   $ 14,000            
Debt Instrument, Repurchase Amount 14,400   14,400            
Long-term Debt                 $ 219,500
Title Eleven Bonds [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Repurchase Amount 99,900   99,900            
Debt extinguishment losses     29,000            
Redemption Premium     20,500            
Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Letters of Credit Outstanding, Amount           $ 6,500      
Sea-Vista [Member]                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Maximum Borrowing Capacity             $ 300,000    
Debt Issuance Cost     3,100            
Sea-Vista [Member] | Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Maximum Borrowing Capacity             100,000    
Line of Credit Facility, Fair Value of Amount Outstanding 30,000   30,000            
Sea-Vista [Member] | Term A-1 Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt 80,000   $ 80,000            
Debt Instrument, Unused Borrowing Capacity, Amount             80,000    
Debt Instrument, Periodic Payment, Principal     1.25%            
Repayments of long-term debt     $ 1,000            
Sea-Vista [Member] | Term A-2 Loan [Member]                  
Debt Instrument [Line Items]                  
Long-term Debt $ 25,000   $ 25,000            
Debt Instrument, Unused Borrowing Capacity, Amount             $ 120,000    
Debt Instrument, Periodic Payment, Principal     2.50%            
Sea-Vista [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Prepayment Increments     $ 1,000            
Sea-Vista [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Mandatory Prepayment Balance     75,000            
Illinois Corn Processing LLC [Member] | Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Maximum Borrowing Capacity               $ 20,000  
Debt Issuance Cost     $ 300            
Line of Credit Facility, Current Borrowing Capacity               $ 30,000  
London Interbank Offered Rate (LIBOR) [Member] | Sea-Vista [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     2.00%            
London Interbank Offered Rate (LIBOR) [Member] | Sea-Vista [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     2.75%            
London Interbank Offered Rate (LIBOR) [Member] | Illinois Corn Processing LLC [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     2.00%            
Base Rate [Member] | Sea-Vista [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     1.25%            
Base Rate [Member] | Sea-Vista [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Basis Spread on Variable Rate     1.75%