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Accounts Receivable (Tables) | 6 Months Ended
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Apr. 30, 2015
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | Accounts receivable as of April 30, 2015 and October 31, 2014 consisted of the following:
| April 30, 2015 |  | October 31, 2014
Advanced Technology (including U.S. Government(1)): |  |  |
Amount billed | $ | 3,411 |  |  | $ | 2,517 |
Unbilled recoverable costs | 3,389 |  |  | 2,886 |
| 6,800 |  |  | 5,403 |
Commercial Customers: |  |  |
Amount billed | 7,814 |  |  | 8,871 |
Unbilled recoverable costs | 28,907 |  |  | 50,101 |
| 36,721 |  |  | 58,972 |
Accounts receivable, net | $ | 43,521 |  |  | $ | 64,375 |
(1) | Total U.S. Government accounts receivable outstanding as of April 30, 2015 and October 31, 2014 was $3.4 million and $1.7 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://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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 + Details
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