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ACQUISITIONS - Narrative (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 29, 2024 USD ($) | Dec. 29, 2023 USD ($) | Dec. 02, 2023 USD ($) $ / shares shares | May 31, 2023 USD ($) | Mar. 03, 2023 USD ($) | Mar. 29, 2024 USD ($) | Mar. 31, 2023 USD ($) | Mar. 29, 2024 USD ($) | Mar. 29, 2024 USD ($) | Mar. 31, 2023 USD ($) | Sep. 29, 2023 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Financing lease assets obtained in exchange for new lease liabilities |  |  |  |  |  |  |  |  | $ 0 | $ 3,821 |
Intangible Asset and Inventory Step Up Amortization |  |  |  |  |  | $ 100 |  |  |  |  |
RF Business of Wolfspeed, Inc |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase consideration | $ 75,000 | $ 75,000 | $ 75,000 |  |  |  |  |  |  |  |
Acquisition, number of shares issued (in shares) | shares |  |  | 711,528 |  |  |  |  |  |  |  |
Equity purchase consideration | 57,733 | 60,772 | $ 57,700 |  |  |  |  |  |  |  |
Percent of share consideration forfeited (as a percent) |  |  | 0.25 |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  | 300 |  |  | 7,400 | 100 |
Share price of common stock (in dollars per share) | $ / shares |  |  | $ 81.14 |  |  |  |  |  |  |  |
Cash consideration | 132,733 | 135,772 |  |  |  |  |  |  |  |  |
Intangible assets | 43,000 | 60,000 |  |  |  | 43,000 |  | $ 43,000 | 43,000 |  |
Prepayment for net assets associated with the RTP Fab Transfer | 19,950 | $ 19,450 |  |  |  | 19,950 |  | 19,950 | 19,950 |  |
Upfront payment for net assets assumed, fair value | 14,100 |  |  |  |  | 14,100 |  | 14,100 | 14,100 |  |
Acquisition revenue recognized |  |  |  |  |  | 35,700 |  |  | 41,900 |  |
Pro forma revenue |  |  |  |  |  | 181,234 | $ 205,610 |  | 365,219 | 428,060 |
Pro forma net loss |  |  |  |  |  | (15,222) | 1,566 |  | (1,297) | 32,842 |
Measurement adjustments, Equity purchase consideration |  |  |  |  |  |  |  | (3,039) |  |  |
Measurement adjustment, Intangibles |  |  |  |  |  |  |  | 17,000 |  |  |
Measurement adjustment, inventory |  |  |  |  |  |  |  | 6,358 |  |  |
RF Business of Wolfspeed, Inc | Acquisition-related Costs |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  | 300 | 3,100 |  | 15,800 | 42,000 |
RF Business of Wolfspeed, Inc | Technology |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 21,500 |  |  |  |  | $ 21,500 |  | $ 21,500 | $ 21,500 |  |
Useful life of intangible assets (in years) | 4 years 9 months 18 days |  |  |  |  | 4 years 9 months 18 days |  | 4 years 9 months 18 days | 4 years 9 months 18 days |  |
RF Business of Wolfspeed, Inc | Customer relationships |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 7,000 |  |  |  |  | $ 7,000 |  | $ 7,000 | $ 7,000 |  |
Useful life of intangible assets (in years) | 8 years 9 months 18 days |  |  |  |  | 8 years 9 months 18 days |  | 8 years 9 months 18 days | 8 years 9 months 18 days |  |
RF Business of Wolfspeed, Inc | Favorable Contracts |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 14,500 |  |  |  |  | $ 14,500 |  | $ 14,500 | $ 14,500 |  |
Useful life of intangible assets (in years) | 2 years |  |  |  |  | 2 years |  | 2 years | 2 years |  |
OMMIC SAS |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  | $ 900 |  | $ 300 | 1,600 |
Cash consideration |  |  |  | $ 36,900 |  |  |  |  |  |  |
Intangible assets | $ 5,966 |  |  |  |  | $ 5,966 |  | $ 5,966 | 5,966 |  |
Financing lease assets obtained in exchange for new lease liabilities |  |  |  |  |  |  |  |  | 24,700 |  |
OMMIC SAS | Technology |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | 4,900 |  |  |  |  | 4,900 |  | 4,900 | 4,900 |  |
OMMIC SAS | Customer relationships |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 1,100 |  |  |  |  | $ 1,100 |  | $ 1,100 | $ 1,100 |  |
Useful life of intangible assets (in years) | 8 years 3 months 18 days |  |  |  |  | 8 years 3 months 18 days |  | 8 years 3 months 18 days | 8 years 3 months 18 days |  |
Linearizer Technology, Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  | $ 1,900 |
Cash consideration |  |  |  |  | $ 51,400 |  |  |  |  |  |
Intangible assets | $ 29,600 |  |  |  |  | $ 29,600 |  | $ 29,600 | $ 29,600 |  | $ 29,600
Measurement adjustment, inventory |  |  |  |  |  |  |  | 1,407 |  |  |
Linearizer Technology, Inc. | Technology |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 7,100 |  |  |  |  | $ 7,100 |  | $ 7,100 | $ 7,100 |  |
Useful life of intangible assets (in years) | 7 years 7 months 6 days |  |  |  |  | 7 years 7 months 6 days |  | 7 years 7 months 6 days | 7 years 7 months 6 days |  |
Linearizer Technology, Inc. | Customer relationships |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 20,700 |  |  |  |  | $ 20,700 |  | $ 20,700 | $ 20,700 |  |
Useful life of intangible assets (in years) | 8 years 7 months 6 days |  |  |  |  | 8 years 7 months 6 days |  | 8 years 7 months 6 days | 8 years 7 months 6 days |  |
Linearizer Technology, Inc. | Trade Names |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 1,800 |  |  |  |  | $ 1,800 |  | $ 1,800 | $ 1,800 |  |
Useful life of intangible assets (in years) | 7 years 7 months 6 days |  |  |  |  | 7 years 7 months 6 days |  | 7 years 7 months 6 days | 7 years 7 months 6 days |  |

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