Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 27, 2025	Sep. 28, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0	0
2003 Plan \| Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	19,700,000
Shares reserved for outstanding equity awards (in shares)	0
Shares reserved for future awards (in shares)	11,000,000.0
2003 Plan \| Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	5,800,000
Shares reserved for outstanding equity awards (in shares)	2,000,000.0
Shares reserved for future awards (in shares)	4,600,000
2003 Plan \| Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	500,000,000
Shares reserved for outstanding equity awards (in shares)	2,000,000.0
Shares reserved for future awards (in shares)	500,000
Director Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0
Director Plan \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares maximum value	$ 120

Share based compensation arrangement by share based payment award common stock reserved for future issuance.

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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Aggregate Intrinsic Value

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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