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Stockholders' Deficit - (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 15, 2018 | Jan. 04, 2020 | Oct. 02, 2021 | Oct. 03, 2020 | Sep. 28, 2019 | Nov. 13, 2018
Class of Stock [Line Items] |  |  |  |  |  |
Convertible preferred stock, shares issued upon conversion (in shares) |  |  |  |  |  | 799,615
Tender offer, repurchase of common stock, held as treasury stock (in shares) | 1,782,568 |  |  |  |  |
Tender offer, repurchase of common stock, held as treasury stock, cost per share (in dollars per share) | $ 28.00 |  |  |  |  |
Aggregate cost of tender offer repurchase of common stock and preferred stock, including fees and expenses | $ 50,300 |  | $ 0 | $ 0 | $ 50,370 |
Convertible Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Tender offer, repurchase of preferred stock (in shares) | 364 |  |  |  | 364 |
Tender offer, repurchase of preferred stock (in dollars per share) | $ 241.69 |  |  |  |  |
Letters of Credit | Credit Facility | Credit Agreement |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Funding received | $ 50,000 | $ 50,000 |  |  |  |

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