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Business Segments (Tables) | 12 Months Ended
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Sep. 30, 2021
Segment Reporting [Abstract] |
Schedule of Business Segment Information | Information concerning our business segments is as follows (in thousands):
|  | Years Ended September 30, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Net revenue: |  |  |  |  |  |  |  |  |
Semiconductor |  | $ | 72,086 |  |  | $ | 54,516 |  |  | $ | 66,455 |
Material and Substrate |  |  | 13,119 |  |  |  | 10,304 |  |  |  | 13,682 |
Non-segment related |  |  | — |  |  |  | 643 |  |  |  | 4,898 |
|  | $ | 85,205 |  |  | $ | 65,463 |  |  | $ | 85,035 |
Operating income (loss): |  |  |  |  |  |  |  |  |
Semiconductor |  | $ | 8,585 |  |  | $ | 4,168 |  |  | $ | 8,744 |
Material and Substrate |  |  | 278 |  |  |  | 684 |  |  |  | 3,641 |
Non-segment related |  |  | (5,138 | ) |  |  | (5,337 | ) |  |  | (7,469 | )
|  | $ | 3,725 |  |  | $ | (485 | ) |  | $ | 4,916 |
|  | Years Ended September 30, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Capital expenditures: |  |  |  |  |  |  |  |  |
Semiconductor |  | $ | 2,264 |  |  | $ | 912 |  |  | $ | 379 |
Material and Substrate |  |  | 695 |  |  |  | 1,724 |  |  |  | 171 |
Non-segment related |  |  | 53 |  |  |  | 39 |  |  |  | 33 |
|  | $ | 3,012 |  |  | $ | 2,675 |  |  | $ | 583 |
Depreciation and amortization expense: |  |  |  |  |  |  |  |  |
Semiconductor |  | $ | 905 |  |  | $ | 821 |  |  | $ | 828 |
Material and Substrate |  |  | 438 |  |  |  | 197 |  |  |  | 136 |
Non-segment related |  |  | 55 |  |  |  | 60 |  |  |  | 161 |
|  | $ | 1,398 |  |  | $ | 1,078 |  |  | $ | 1,125 |
|  | September 30, 2021 |  |  | September 30, 2020 |
Identifiable assets: |  |  |  |  |  |
Semiconductor |  | $ | 70,631 |  |  | $ | 51,648 |
Material and Substrate |  |  | 19,541 |  |  |  | 12,717 |
Non-segment related* |  |  | 26,741 |  |  |  | 37,733 |
|  | $ | 116,913 |  |  | $ | 102,098 |
* Non-segment related assets include cash, property and other assets.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 + Details
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