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BALANCE SHEET COMPONENTS (Components of significant balance sheet accounts) (Details) - USD ($) $ in Thousands | Sep. 28, 2024 | Sep. 30, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Short-term investments | $ 350,000 | $ 230,000
Inventories, net: |  |
Raw materials and supplies | 113,119 | 114,827
Work in process | 43,023 | 74,555
Finished goods | 53,378 | 49,207
Inventory, gross | 209,520 | 238,589
Inventory reserves | (31,784) | (21,285)
Inventories, net | 177,736 | 217,304
Property, plant and equipment, net: |  |
Land | 2,182 | 2,182
Buildings and building improvements | 23,951 | 23,105
Leasehold improvements | 84,738 | 82,927
Data processing equipment and software | 38,238 | 37,483
Machinery, equipment, furniture and fixtures | 106,860 | 95,692
Construction in progress | 10,062 | 11,099
Property, plant and equipment, gross | 266,031 | 252,488
Accumulated depreciation | (159,517) | (142,437)
Accumulated impairment | (41,691) | 0
Property, plant and equipment, net | 64,823 | 110,051
Accrued expenses and other current liabilities: |  |
Accrued customer obligations | 31,014 | 35,701
Wages and benefits | 31,349 | 33,096
Commissions and professional fees | 4,654 | 4,091
Dividends payable | 10,794 | 10,710
Accrued leasehold renovations | 6,476 | 11,005
Other | 6,515 | 8,402
Accrued expenses and other current liabilities | $ 90,802 | $ 103,005

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