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Debt and Leases (Tables)
 12 Months Ended
Oct. 31, 2014
Debt Instrument [Line Items]  
Schedule of Debt [Table Text Block]
Debt at October 31, 2014 and 2013, consisted of the following:
 
 
2014
 
2013
Revolving credit facility
 
$
945

 
$
6,500

Senior Unsecured Convertible Notes
 
—

 
38,000

Connecticut Development Authority Note
 
3,033

 
3,246

Connecticut Clean Energy and Finance Investment Authority Note
 
6,052

 
5,744

Capitalized lease obligations
 
721

 
497

Total debt
 
$
10,751

 
$
53,987

Less: Unamortized debt discount
 
—

 
(3,106
)
 
 
10,751

 
50,881

Less: Current portion of long-term debt
 
(1,439
)
 
(6,931
)
Long-term debt
 
$
9,312

 
$
43,950
schedule of future minimum debt and lease payments [Text Block]
Aggregate annual principal payments under our loan agreements (excluding payments relating to the revolving credit facility) and capital lease obligations for the years subsequent to October 31, 2014 are as follows:
 
 
 
 
Year 1
493

Year 2
537

Year 3
351

Year 4
2,368

Year 5
5

Thereafter
6,052

 
$
9,806