Revolving Line of Credit & Long Term Debt Long Term Debt (Details) (USD $)	3 Months Ended	12 Months Ended
	Apr. 30, 2012	Oct. 31, 2012	Oct. 31, 2011
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Year Two		$ 114,718
Shuttlewagon Railcar Mover Loan		497,636	0
Letters of Credit Outstanding, Amount		386,928
Revolving Line of Credit	6,000,000
Line of Credit Facility, Amount Outstanding		0
Long-term Debt		5,389,588	0
Long-term Debt, Current Maturities		(114,718)	0
Long-term Debt, Excluding Current Maturities		5,274,870	0
Letters of Credit Reduction, Amount		49,000
Long-term Debt, Maturities, Repayments of Principal in Year Three		119,233
Long-term Debt, Maturities, Repayments of Principal in Year Four		2,015,877
Long-term Debt, Maturities, Repayments of Principal in Year Five		2,128,801
Long-term Debt, Maturities, Repayments of Principal after Year Five		1,010,959
Revolving Operating Loan [Member]
Debt Instrument [Line Items]
Long-term Debt		6,000,000
Shuttlewagon Railcar Mover [Member]
Debt Instrument [Line Items]
LOC Term		5
Debt Instrument, Interest Rate, Stated Percentage		3.875%
Revolving Term Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		4,891,952	0
Long-term Debt		8,000,000
Revolving Operating Loan, Net [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 5,613,000