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Inventories - Components of Inventories (Short and Long Term) (Details) - USD ($) $ in Thousands | Apr. 30, 2020 | Oct. 31, 2019
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Inventory Disclosure [Abstract] |  |  |
Raw materials |  | $ 24,558 | $ 25,466
Work-in-process | [1] | 39,405 | 31,228
Inventories |  | 63,963 | 56,694
Inventories - short-term |  | (54,945) | (54,515)
Inventories - long-term | [2] | $ 9,018 | $ 2,179
[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 project asset construction or power plant orders or for use under the Company’s service agreements. Included in work-in-process as of April 30, 2020 and October 31, 2019 was $22.0 million and $23.5 million, respectively, of completed standard components and modules.
[2] | Long-term inventory includes modules that are contractually required to be segregated for use as replacement modules for specific project assets. Given that these project assets are long-term, the Company classifies the inventory as long-term regardless of the expected timing of such module replacements.

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