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Restructuring Plans (Tables) | 12 Months Ended
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Sep. 30, 2021
Restructuring And Related Activities [Abstract] |
Schedule of Restructuring Activity | The table below details the restructuring activity for the years ended September 30, 2021 and 2020. The activity during 2020 is the result of staff reductions at our Massachusetts operations as we evaluated staffing across our Semiconductor operations. The activity during 2021 relates to staff reductions in our Semiconductor and Material and Substrate operations. The outstanding obligations as of September 30, 2021 and 2020 are as follows, in thousands:
|  | Years Ended September 30, |
|  | 2021 |  |  | 2020 |
Balance at beginning of the year |  | $ | 102 |  |  | $ | 40 |
Severance expense, net of adjustments |  |  | 86 |  |  |  | 217 |
Cash payments |  |  | (171 | ) |  |  | (155 | )
Balance at the end of the year |  | $ | 17 |  |  | $ | 102 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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