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Debt and Leases (Tables)
 9 Months Ended
Jul. 31, 2013
Debt Instrument [Line Items]  
Schedule of Debt [Table Text Block]
At July 31, 2013 and October 31, 2012, debt consisted of the following:
 
 
July 31, 2013
 
October 31, 2012
Revolving credit facility
 
$
4,000

 
$
4,000

Senior Unsecured Convertible Notes
 
38,000

 
—

Connecticut Development Authority Note
 
3,302

 
3,466

Connecticut Clean Energy Fund Note
 
—

 
847

Connecticut Clean Energy and Finance Investment Authority Note
 
4,425

 
—

Capitalized lease obligations
 
352

 
234

Total debt
 
$
50,079

 
$
8,547

Less: Unamortized debt discount (1)
 
(3,131
)
 
—

 
 
46,948

 
8,547

Less: Current portion of long-term debt
 
(4,403
)
 
(5,161
)
Long-term debt
 
$
42,545

 
$
3,386


(1) The debt discount recorded in connection with the issuance of the Company’s unsecured convertible notes is recorded on the consolidated balance sheets as a reduction to associated debt balance. The Company amortizes the debt discount to interest expense over the term of the debt.
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 July 31, 2013 are as follows:
 
 
 
 
Year 1
$
403

Year 2
309

Year 3
277

Year 4
256

Year 5
40,410

  Thereafter
4,424

 
$
46,079