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Debt and Finance Obligation (Tables)
 9 Months Ended
Jul. 31, 2016
Debt [Abstract]  
Schedule of Debt [Table Text Block]
Debt as of July 31, 2016 and October 31, 2015, consisted of the following:
 
 
July 31, 2016
 
October 31, 2015
Revolving credit facility
 
$
—

 
$
2,945

Connecticut Development Authority Note
 
2,647

 
2,817

Connecticut Clean Energy and Finance Investment Authority Note
 
6,052

 
6,052

NRG Energy, Inc. Loan Agreement
 
10,963

 
3,763

PNC Energy Capital, LLC Finance Obligation
 
6,770

 
—

State of Connecticut Loan
 
10,000

 
—

Hercules Loan and Security Agreement
 
15,283

 
—

Capitalized lease obligations
 
808

 
726

Total debt
 
$
52,523

 
$
16,303

Current portion of long-term debt and finance obligation
 
(13,995
)
 
(7,358
)
Long-term debt
 
$
38,528

 
$
8,945