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Business Segments (Tables) | 12 Months Ended
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Sep. 30, 2017
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | Information concerning our business segments is as follows:
| Years Ended September 30,
| 2017 |  | 2016 |  | 2015
| (dollars in thousands)
Net revenue: |  |  |  |  |
Solar* | $ | 87,031 |  |  | $ | 60,946 |  |  | $ | 56,689 |
Semiconductor | 67,237 |  |  | 50,637 |  |  | 37,250 |
Polishing | 10,248 |  |  | 8,725 |  |  | 10,944 |
| $ | 164,516 |  |  | $ | 120,308 |  |  | $ | 104,883 |
Operating income (loss): |  |  |  |  |
Solar* | $ | 6,060 |  |  | $ | (6,696 | ) |  | $ | (5,056 | )
Semiconductor | 9,538 |  |  | 3,904 |  |  | (1,268 | )
Polishing | 2,617 |  |  | 1,588 |  |  | 2,250 |
Non-segment related | (7,790 | ) |  | (6,704 | ) |  | (9,447 | )
| $ | 10,425 |  |  | $ | (7,908 | ) |  | $ | (13,521 | )
* The financial statement of business units included in the Solar segment include some sales of equipment and parts to the semiconductor, silicon wafer and MEMS industries, comprising less than 25% of the Solar segment revenue
| Years Ended September 30,
| 2017 |  | 2016 |  | 2015
| (dollars in thousands)
Capital expenditures: |  |  |  |  |
Solar | $ | 1,008 |  |  | $ | 235 |  |  | $ | 411 |
Semiconductor | 236 |  |  | 692 |  |  | 136 |
Polishing | 12 |  |  | 51 |  |  | 63 |
| $ | 1,256 |  |  | $ | 978 |  |  | $ | 610 |
Depreciation and amortization expense: |  |  |  |  |
Solar | $ | 1,544 |  |  | $ | 2,014 |  |  | $ | 2,940 |
Semiconductor | 876 |  |  | 870 |  |  | 318 |
Polishing | 73 |  |  | 90 |  |  | 99 |
| $ | 2,493 |  |  | $ | 2,974 |  |  | $ | 3,357 |
| September 30, 2017 |  | September 30, 2016
| (dollars in thousands)
Identifiable assets: |  |  |
Solar | $ | 97,999 |  |  | $ | 42,962 |
Semiconductor | 57,177 |  |  | 51,985 |
Polishing | 5,078 |  |  | 4,819 |
Non-segment related | 31,369 |  |  | 18,664 |
| $ | 191,623 |  |  | $ | 118,430 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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