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DEBT - Convertible Notes Classification (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 27, 2023 | Dec. 28, 2022 | Dec. 29, 2021 | Sep. 27, 2023 | Jun. 28, 2023 | Mar. 29, 2023 | Sep. 28, 2022 | Jun. 29, 2022 | Mar. 30, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amortization expense on Convertible Notes | $ 1,047 | $ 1,047 | $ 867 |  |  |  |  |  |
Long-term debt | 245,636 | 244,589 |  | $ 245,375 | $ 245,113 | $ 244,851 | $ 244,328 | $ 244,066 | $ 243,804
0% Convertible Senior Notes Due 2028 | Senior Notes | Private Placement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amortization expense on Convertible Notes | 1,047 | 1,047 |  |  |  |  |  |  |
Convertible Notes | 250,000 | 250,000 |  |  |  |  |  |  |
Discount and debt issuance costs, net of amortization | (4,364) | (5,411) |  |  |  |  |  |  |
Long-term debt | $ 245,636 | $ 244,589 |  |  |  |  |  |  |

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