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Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands		Oct. 31, 2017	Oct. 31, 2016
Receivables [Abstract]
Government contract receivable		$ 1,934	$ 2,463
Government contract receivable, unbilled amounts		7,352	3,068
U.S. government accounts receivable total	[1]	9,286	5,531
Contract receivable		41,073	5,411
Unbilled contracts receivable		18,162	13,651
Commercial customers accounts receivable		59,235	19,062
Accounts receivable, net		$ 68,521	$ 24,593
[1] Total U.S. government accounts receivable outstanding as of October 31, 2017 and 2016 is $3.2 million and $2.2 million, respectively.

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commercial customers accounts receivable

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U.S. government accounts receivable.

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- Definition

Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68065756&loc=d3e49354-109356

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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The amount of receivables that are derived from government contracts.

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Unbilled amounts (net of unliquidated progress payments) of government contract receivables.

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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