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Debt and Leases (Tables)
 6 Months Ended
Apr. 30, 2014
Debt Instrument [Line Items]  
Schedule of Debt [Table Text Block]
At April 30, 2014 and October 31, 2013, debt consisted of the following:
 
 
April 30, 2014
 
October 31, 2013
Revolving credit facility
 
$
945

 
$
6,500

Senior Unsecured Convertible Notes
 
1,000

 
38,000

Connecticut Development Authority Note
 
3,138

 
3,246

Connecticut Clean Energy and Finance Investment Authority Note
 
6,051

 
5,744

Capitalized lease obligations
 
596

 
497

Total debt
 
$
11,730

 
$
53,987

Less: Unamortized debt discount
 
(73
)
 
(3,106
)
 
 
11,657

 
50,881

Less: Current portion of long-term debt
 
(1,346
)
 
(6,931
)
Long-term debt
 
$
10,311

 
$
43,950
Schedule of future minimum debt and lease payments [Text Block]
Aggregate annual principal payments under our loan agreements and capital lease obligations, excluding payments relating to the revolving credit facility, for the years subsequent to April 30, 2014 are as follows:
 
 
 
 
Year 1
$
401

Year 2
430

Year 3
397

Year 4
2,494

Year 5
1,012

  Thereafter
6,051

 
$
10,785