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Accounts Receivable - Additional Information (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Allowance for Doubtful Accounts Receivable, Current	$ 79	$ 193
POSCO Energy [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable, Related Parties, Current	6,200	5,000
Accounts Payable, Related Parties, Current	32,700	0
NRG Energy, Inc. [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts Receivable, Related Parties, Current	$ 100	$ 100

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- Definition

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 for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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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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