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Accounts Receivable | 9 Months Ended
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Jul. 31, 2012
Receivables [Abstract] |
Accounts Receivable | Accounts Receivable Accounts receivable at July 31, 2012 and October 31, 2011 consisted of the following:
| July 31, 2012 |  | October 31, 2011
U.S. Government: |  |  |
Amount billed | $ | 371 |  |  | $ | 52 |
Unbilled recoverable costs | 1,142 |  |  | 1,012 |
| 1,513 |  |  | 1,064 |
Commercial Customers: |  |  |
Amount billed | 13,381 |  |  | 10,330 |
Unbilled recoverable costs | 5,346 |  |  | 10,556 |
| 18,727 |  |  | 20,886 |
| $ | 20,240 |  |  | $ | 21,950 |
We bill customers for power plant and module kit sales based on certain milestones being reached. We bill the U.S. government for research and development contracts based on actual recoverable costs incurred, typically in the month subsequent to incurring costs. Included in Commercial Customers accounts receivable are amounts due from POSCO of $11 million and $7.1 million at July 31, 2012 and October 31, 2011, respectively. Unbilled recoverable costs relate to revenue recognized on customer contracts that have not been billed. Accounts receivable are presented net of an allowance for doubtful accounts of $0.5 million and $0.6 million at July 31, 2012 and October 31, 2011, respectively.

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5162-111524 Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Article 4 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5066-111524 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 9 + Details
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