Debt and Credit Facilities - Component of Long-term Debt (Detail) - USD ($) $ in Thousands	Jun. 29, 2025	Dec. 29, 2024
Debt Instrument [Line Items]
Total long-term debt	$ 0	$ 4,000
Revolving Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 0	$ 4,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

POTBELLY CORP 10-Q