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Accounts Receivable, Net - Additional Information (Details) - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Allowance for Doubtful Accounts Receivable, Current	$ 160	$ 79
POSCO Energy [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable, Related Parties, Current	1,600	6,200
NRG Energy, Inc. [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable, Related Parties, Current	$ 2,200	$ 100

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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