Inventories
 9 Months Ended
Jul. 31, 2018
Inventory Disclosure [Abstract]  
Inventories

Note 4.  Inventories

Inventories as of July 31, 2018 and October 31, 2017 consisted of the following:

 

 

 

July 31,

 

 

October 31,

 

 

 

2018

 

 

2017

 

Raw materials

 

$

22,479

 

 

$

20,065

 

Work-in-process (1)

 

 

37,635

 

 

 

54,431

 

Inventories

 

$

60,114

 

 

$

74,496

 

 

(1)

Work-in-process includes the standard components of inventory used to build the typical modules or module components that are intended to be used in future power plant orders or to service our service agreements.  Included in work-in-process as of July 31, 2018 and October 31, 2017 was $30.0 million and $46.3 million, respectively, of completed standard components.

Raw materials consist mainly of various nickel powders and steels, various other components used in producing cell stacks and purchased components for balance of plant.  Work-in-process inventory is comprised of material, labor, and overhead costs incurred to build balance of plant components, fuel cell stacks and modules, which are subcomponents of a power plant.