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BALANCE SHEET COMPONENTS (Tables) | 3 Months Ended
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Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Components of significant balance sheet accounts | The following tables reflect the components of significant balance sheet accounts as of December 31, 2022 and October 1, 2022:
| As of
(in thousands) | December 31, 2022 |  | October 1, 2022
Short-term investments, available-for-sale (1) | $ | 245,000 |  |  | $ | 220,000 |
Inventories, net: |  |  |
Raw materials and supplies | $ | 142,520 |  |  | $ | 118,833 |
Work in process | 43,117 |  |  | 40,114 |
Finished goods | 45,118 |  |  | 45,277 |
| 230,755 |  |  | 204,224 |
Inventory reserves | (19,118) |  |  | (19,238) |
| $ | 211,637 |  |  | $ | 184,986 |
Property, plant and equipment, net: |  |  |
Land | $ | 2,182 |  |  | $ | 2,182 |
Buildings and building improvements | 22,964 |  |  | 22,783 |
Leasehold improvements | 32,784 |  |  | 32,400 |
Data processing equipment and software | 39,282 |  |  | 38,223 |
Machinery, equipment, furniture and fixtures | 93,931 |  |  | 90,151 |
Construction in progress | 37,356 |  |  | 25,004 |
| 228,499 |  |  | 210,743 |
Accumulated depreciation | (135,680) |  |  | (129,835) |
| $ | 92,819 |  |  | $ | 80,908 |
Accrued expenses and other current liabilities: |  |  |
Accrued customer obligations (2) | $ | 55,833 |  |  | $ | 58,916 |
Wages and benefits | 26,494 |  |  | 50,279 |
Dividends payable | 10,794 |  |  | 9,743 |
Commissions and professional fees | 3,435 |  |  | 5,019 |
Severance | 88 |  |  | 19 |
Other | 14,289 |  |  | 10,565 |
| $ | 110,933 |  |  | $ | 134,541 |
(1)All short-term investments were classified as available-for-sale and the fair value approximates cost basis. The Company did not recognize any realized gains or losses on the sale of investments during the three months ended December 31, 2022 and January 1, 2022. (2)Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

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