Subsequent Event (Details) (AgStar Financial Services, PCA [Member], USD $)
12 Months Ended 3 Months Ended
Oct. 31, 2014
Jan. 31, 2015
Subsequent Event [Line Items]    
Debt Instrument, Annual Capital Expenditure Limit $ 2,000,000  
Revolving Credit Facility [Member]    
Subsequent Event [Line Items]    
Debt Instrument, Annual Capital Expenditure Limit   $ 2,000,000