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Subsequent Events (Details) (USD $) | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2011 | Dec. 21, 2012 Versa Acquisition [Member] | Jan. 31, 2013 Connecticut Clean Energy Fund [Member] | Oct. 31, 2012 Connecticut Clean Energy Fund [Member] | Oct. 31, 2011 Connecticut Clean Energy Fund [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Controlling Owners |  | 61.00% |  |  |  |  |
Common Stock, Shares, Issued |  | 185,856,123 | 138,400,497 | 3,500,000 |  |  |
Product and Service Backlog, Increase | $ 125,000,000 |  |  |  |  |  |
Product Backlog, Increase | 56,000,000 |  |  |  |  |  |
Service Backlog, Increase | 69,000,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 5.00% | 8.75% |
Line of Credit Facility, Amount Outstanding |  | 4,000,000 | 4,000,000 |  |  | 847,000 | 775,000
Notes Payable |  |  |  |  | $ 5,800,000 |  |

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