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Accounts Receivable, Net (Tables) | 9 Months Ended
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Jul. 31, 2018
Receivables [Abstract] |
Schedule of Accounts Receivable | Accounts receivable as of July 31, 2018 and October 31, 2017 consisted of the following:
|  | July 31, |  |  | October 31, |
|  | 2018 |  |  | 2017 |
Commercial Customers: |  |  |  |  |  |  |  |
Amount billed |  | $ | 24,196 |  |  | $ | 41,073 |
Unbilled receivables (1) |  |  | 9,512 |  |  |  | 18,162 |
|  |  | 33,708 |  |  |  | 59,235 |
Advanced Technologies (including U.S. government(2)): |  |  |  |  |  |  |  |
Amount billed |  |  | 1,208 |  |  |  | 1,934 |
Unbilled receivables |  |  | 4,514 |  |  |  | 7,352 |
|  |  | 5,722 |  |  |  | 9,286 |
Accounts receivable, net |  | $ | 39,430 |  |  | $ | 68,521 |
(1) | Additional long-term unbilled receivables of $8.9 million and $12.8 million are included within “Other Assets” as of July 31, 2018 and October 31, 2017, respectively.
(2) | Total U.S. government accounts receivable, including unbilled receivables, outstanding as of July 31, 2018 and October 31, 2017 were $2.6 million and $3.2 million, respectively.

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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