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Accounts Receivable, Net and Unbilled Receivables | 3 Months Ended
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Jan. 31, 2019
Receivables [Abstract] |
Accounts Receivable, Net and Unbilled Receivables | Note 4. Accounts Receivable, Net and Unbilled Receivables Accounts receivable, net and Unbilled receivables as of January 31, 2019 and October 31, 2018 consisted of the following:
|  | January 31, |  |  | October 31, |
|  | 2019 |  |  | 2018 |
Commercial Customers: |  |  |  |  |  |  |  |
Amount billed |  | $ | 7,809 |  |  | $ | 7,415 |
Unbilled receivables (1) |  |  | 11,194 |  |  |  | 10,632 |
|  |  | 19,003 |  |  |  | 18,047 |
Advanced Technologies (including U.S. government(2)): |  |  |  |  |  |  |  |
Amount billed |  |  | 512 |  |  |  | 1,865 |
Unbilled receivables |  |  | 1,193 |  |  |  | 3,127 |
|  |  | 1,705 |  |  |  | 4,992 |
Accounts receivable, net and unbilled receivables |  | $ | 20,708 |  |  | $ | 23,039 |
(1) | Additional long-term unbilled receivables of $17.4 million and $9.4 million are included within “Other Assets” as of January 31, 2019 and October 31, 2018, respectively.
(2) | Total U.S. government accounts receivable, including unbilled receivables, outstanding as of January 31, 2019 and October 31, 2018 were $0.8 million and $2.3 million, respectively.
The Company bills customers for power plant and power plant component sales based on certain contractual milestones being reached. The Company bills service agreements based on the contract price and billing terms of the contracts. Generally, the Company’s Advanced Technologies contracts are billed based on actual revenues recorded, typically in the subsequent month. Some Advanced Technologies contracts are billed based on contractual milestones or costs incurred. Unbilled receivables relate to revenue recognized on customer contracts that have not been billed. Accounts receivable are presented net of an allowance for doubtful accounts of $0.3 million and $0.2 million as of January 31, 2019 and October 31, 2018, respectively. Uncollectible accounts receivable are charged against the allowance for doubtful accounts when all collection efforts have failed and it is deemed unlikely that the amount will be recovered.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 Reference 2: 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(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5162-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5066-111524 Reference 6: 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(6)) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 + Details
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