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Accounts Receivable, Net and Unbilled Receivables (Tables) | 6 Months Ended
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Apr. 30, 2020
Receivables [Abstract] |
Schedule of Accounts Receivable, Net and Unbilled Receivables | Accounts receivable, net and Unbilled receivables as of April 30, 2020 and October 31, 2019 consisted of the following:
|  | April 30, |  |  | October 31, |
|  | 2020 |  |  | 2019 |
Commercial Customers: |  |  |  |  |  |  |  |
Amount billed |  | $ | 5,632 |  |  | $ | 2,227 |
Unbilled receivables (1) |  |  | 5,820 |  |  |  | 6,139 |
|  |  | 11,452 |  |  |  | 8,366 |
Advanced Technologies (including U.S. government(2)): |  |  |  |  |  |  |  |
Amount billed |  |  | 485 |  |  |  | 1,065 |
Unbilled receivables |  |  | 1,655 |  |  |  | 1,545 |
|  |  | 2,140 |  |  |  | 2,610 |
Accounts receivable, net and unbilled receivables |  | $ | 13,592 |  |  | $ | 10,976 |
(1) | Additional long-term unbilled receivables of $4.4 million and $3.6 million are included within “Other Assets” as of April 30, 2020 and October 31, 2019, respectively.
(2) | Total U.S. government accounts receivable, including unbilled receivables, outstanding as of April 30, 2020 and October 31, 2019 were $1.4 million and $1.2 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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