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Accounts Receivable (Tables) | 3 Months Ended
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Jan. 31, 2017
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | Accounts receivable as of January 31, 2017 and October 31, 2016 consisted of the following:
| January 31, 2017 |  | October 31, 2016
Commercial Customers: |  |  |
Amount billed | $ | 6,928 |  |  | $ | 5,411 |
Unbilled recoverable costs (2) | 11,596 |  |  | 13,651 |
| 18,524 |  |  | 19,062 |
Advanced Technology (including U.S. Government(1)): |  |  |
Amount billed | 2,427 |  |  | 2,463 |
Unbilled recoverable costs | 4,668 |  |  | 3,068 |
| 7,095 |  |  | 5,531 |
Accounts receivable, net | $ | 25,619 |  |  | $ | 24,593 |
(1) | Total U.S. Government accounts receivable outstanding as of January 31, 2017 and October 31, 2016 were $2.0 million and $2.2 million, respectively.
(2) | Additional unbilled recoverable costs of $7.0 million and $5.7 million are included within long-term Other Assets as of January 31, 2017 and October 31, 2016, 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://www.xbrl.org/2003/role/presentationRef -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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