Debt and Leases (Details) (USD $)	6 Months Ended									3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 12, 2013	Oct. 31, 2012	Apr. 30, 2013 Connecticut Clean Energy Fund [Member]	Jan. 31, 2013 Connecticut Clean Energy Fund [Member]	Oct. 31, 2012 Connecticut Clean Energy Fund [Member]	Apr. 30, 2013 Connecticut Development Authority Note [Member]	Oct. 31, 2012 Connecticut Development Authority Note [Member]	Apr. 30, 2013 Connecticut Clean Energy and Finance Investment Authority [Member]	Mar. 05, 2013 Connecticut Clean Energy and Finance Investment Authority [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 4,000,000			$ 4,000,000	$ 0	$ 900,000	$ 847,000	$ 3,376,000	$ 3,466,000	$ 3,505,000
Capital Lease Obligations	373,000			234,000
Long-term Debt	11,254,000			8,547,000
Long-term Debt, Current Maturities	(4,410,000)			(5,161,000)
Long-term Debt, Excluding Current Maturities	6,844,000			3,386,000
Line of Credit Facility, Maximum Borrowing Capacity	8,000,000		5,000,000								5,900,000
Proceeds from Notes Payable										2,600,000
Proceeds from debt	$ 2,625,000	$ 0
Debt Instrument, Interest Rate, Stated Percentage											5.00%