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Severance (Tables) | 12 Months Ended
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Sep. 30, 2023
Restructuring and Related Activities [Abstract] |
Schedule of Severance | The activity during 2021 is the result of staff reductions in our Semiconductor and Material and Substrate operations. The outstanding obligations as of and for the years ended September 30, 2023, 2022 and 2021 are as follows, in thousands:
|  | Years Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Balance at beginning of the year |  | $ | — |  |  | $ | 17 |  |  | $ | 102 |
Severance expense, net of adjustments |  |  | 665 |  |  |  | — |  |  |  | 86 |
Cash payments |  |  | (511 | ) |  |  | (17 | ) |  |  | (171 | )
Balance at the end of the year |  | $ | 154 |  |  | $ | — |  |  | $ | 17 |

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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 -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 + Details
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