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Property, Plant and Equipment (Tables)
 12 Months Ended
Oct. 31, 2015
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment [Table Text Block]
Property, plant and equipment at October 31, 2015 and 2014 consisted of the following (in thousands):
 
2015
 
2014
 
Estimated Useful Life
 
Land
 
$
524

 
$
524

 
—
 
Building and improvements
 
9,263

 
9,117

 
10-26 years
 
Machinery, equipment and software
 
83,578

 
75,084

 
3-8 years
 
Furniture and fixtures
 
3,137

 
2,955

 
10 years
 
Power plants for use under PPAs
 
—

 
996

 
3-10 years
 
Construction in progress
 
9,948

 
10,534

 
—
 
 
 
106,450

 
99,210

 
 
 
Accumulated depreciation
 
(77,448
)
 
(73,385
)
 
 
 
Property, plant and equipment, net
 
$
29,002

 
$
25,825