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Common Stock and Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 27, 2025
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Options under Restated Employee Equity Incentive Plan and Equity Plan for Non-Employee Directors | Information related to stock options under the Restated Employee Equity Incentive Plan and the Equity Plan for Non-Employee Directors is summarized as follows:
|  | Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term in Years |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at December 28, 2024 |  |  | 209,794 |  |  | $ | 358.48 |  |  |  |  |  |  |
Granted |  |  | 80,195 |  |  |  | 243.63 |  |  |  |  |  |  |
Exercised |  |  | - |  |  |  | - |  |  |  |  |  |  |
Forfeited/ Expired |  |  | (80,399 | ) |  |  | 273.63 |  |  |  |  |  |  |
Outstanding at September 27, 2025 |  |  | 209,590 |  |  | $ | 347.03 |  |  |  | 4.53 |  |  | $ | 1,237 |
Exercisable at September 27, 2025 |  |  | 142,633 |  |  | $ | 348.90 |  |  |  | 3.29 |  |  | $ | 1,237 |
Vested and expected to vest at September 27, 2025 |  |  | 206,762 |  |  | $ | 351.90 |  |  |  | 4.39 |  |  | $ | 1,237 |
Weighted Average Assumptions used to Estimate Fair Value of Stock Options | Weighted average assumptions used to estimate fair values of stock options on the date of grants are as follows:
|  | 2025
Expected volatility |  | 40.5%
Risk-free interest rate |  | 4.3%
Expected dividends |  | 0%
Exercise factor |  | 2.1
Discount for post-vesting restrictions |  | 0%
Summary of Vesting Activities of Restricted Stock Units and Investment Share Program under Restated Employee Equity Incentive Plan and Restricted Stock Units under Equity Plan For Non-employee Directors | Information related to vesting activities of restricted stock units and investment share program under the Restated Employee Equity Incentive Plan and restricted stock units under the Equity Plan for Non-Employee Directors is summarized as follows:
|  | Number of Shares |  |  | Weighted Average Fair Value |
Non-vested at December 28. 2024 |  |  | 164,551 |  |  | $ | 328.88 |
Granted |  |  | 144,771 |  |  |  | 231.92 |
Vested |  |  | (46,927 | ) |  |  | 343.91 |
Forfeited |  |  | (33,249 | ) |  |  | 300.46 |
Non-vested at September 27, 2025 |  |  | 229,146 |  |  | $ | 268.67 |
Stock-Based Compensation Expense Included in Operating Expenses | The following table provides information regarding stock-based compensation expense included in operating expenses in the accompanying condensed consolidated statements of comprehensive operations:
|  | Thirteen weeks ended |  |  | Thirty-nine weeks ended |
|  | September 27, 2025 |  |  | September 28, 2024 |  |  | September 27, 2025 |  |  | September 28, 2024 |
|  | (in thousands) |  |  | (in thousands) |
Amounts included in advertising, promotional and selling expenses |  | $ | 1,687 |  |  | $ | 1,310 |  |  | $ | 5,691 |  |  | $ | 5,241 |
Amounts included in general and administrative expenses |  |  | 1,797 |  |  |  | 2,368 |  |  |  | 8,717 |  |  |  | 9,445 |
Total stock-based compensation expense |  | $ | 3,484 |  |  | $ | 3,678 |  |  | $ | 14,408 |  |  | $ | 14,686 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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