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v3.25.1

Organization and Other Matters - Additional Information (Detail) | 3 Months Ended
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Mar. 30, 2025 subsidiary joint_venture shop
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Number of shops Potbelly Corporation owns or operates | 341
Number of shops franchisees operate | 103
Number of wholly owned subsidiaries | subsidiary | 7
Number of joint ventures | joint_venture | 6
Minimum |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Ownership interest rate | 51.00%
Maximum |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Ownership interest rate | 80.00%

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