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Inventories | 12 Months Ended
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Oct. 31, 2017
Inventory Disclosure [Abstract] |
Inventories | Note 4. Inventories Inventories as of October 31, 2017 and 2016 consisted of the following (in thousands):
|  | 2017 |  |  | 2016 |
Raw materials |  | $ | 20,065 |  |  | $ | 25,286 |
Work-in-process (1) |  |  | 54,431 |  |  |  | 48,520 |
Inventories |  | $ | 74,496 |  |  | $ | 73,806 |
(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 October 31, 2017 and 2016 is $46.3 million and $40.6 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 fuel cell stacks and modules, which are subcomponents of a power plant. Raw materials and work in process are net of a valuation allowance of approximately $0.2 million and $0.8 million as of October 31, 2017 and 2016, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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