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REVENUE (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 29, 2024 | Mar. 31, 2023 | Mar. 29, 2024 | Mar. 31, 2023 | Sep. 29, 2023
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | $ 181,234 | $ 169,406 | $ 338,382 | $ 349,510 |
Contract liabilities | 5,214 |  | 5,214 |  | $ 2,762
Increase (decrease) in contract with customer liability |  |  | 2,452 |  |
Amounts included in contract liabilities at the beginning of the period | 100 |  | $ 2,500 |  |
Net change in contract liabilities (percentage) |  |  | 89.00% |  |
Industrial & Defense |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 43,147 | 38,324 |  |  |
Data Center |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 47,200 | 53,888 |  |  |
Telecom |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 90,887 | 77,194 |  |  |
United States |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 80,161 | 82,835 | $ 149,806 | 171,423 |
China |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 46,190 | 33,325 | 82,538 | 74,481 |
Asia Pacific, excluding China |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 26,663 | 28,008 | 40,671 | 49,542 |
Other Countries |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | $ 28,220 | $ 25,238 | 65,367 | 54,064 |
Industrial & Defense |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue |  |  | 92,659 | 79,810 |
Data Center |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue |  |  | 77,838 | 115,337 |
Telecom |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue |  |  | $ 167,885 | $ 154,363 |

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