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Debt and Leases (Tables)
 12 Months Ended
Oct. 31, 2016
Debt Instrument [Line Items]  
Schedule of Debt [Table Text Block]
Debt at October 31, 2016 and 2015 consisted of the following (in thousands):
 
 
2016
 
2015
Hercules Loan and Security Agreement
 
$
20,521

 
$
—

State of Connecticut Loan
 
10,000

 
—

PNC obligation of Company's finance subsidiary
 
41,603

 
—

NRG loan agreement
 
1,755

 
3,763

Connecticut Clean Energy and Finance Investment Authority Note
 
6,050

 
6,052

Connecticut Development Authority Note
 
2,589

 
2,817

Revolving credit facility
 
—

 
2,945

Capitalized lease obligations
 
660

 
726

Total debt
 
$
83,178

 
$
16,303

Current portion of long-term debt
 
(5,275
)
 
(7,358
)
Long-term debt
 
$
77,903

 
$
8,945
schedule of future minimum debt and lease payments [Text Block]
Aggregate annual principal payments under our loan agreements and capital lease obligations for the years subsequent to October 31, 2016 are as follows (in thousands):
Year 1
$
5,275

Year 2
26,530

Year 3
3,426

Year 4
3,954

Year 5
3,743

Thereafter
40,250

 
$
83,178