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v2.4.1.9

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 28, 2014 | Dec. 29, 2013
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Deferred tax assets-current: |  |
Accrued liabilities | $ 1,047 pbpb_DeferredTaxAssetsAccruedLiabilitiesCurrent | $ 1,238 pbpb_DeferredTaxAssetsAccruedLiabilitiesCurrent
Deferred revenue on gift certificates and gift cards | 70 us-gaap_DeferredTaxAssetsDeferredIncome | 96 us-gaap_DeferredTaxAssetsDeferredIncome
Deferred tax assets-non-current: |  |
Net operating loss carryforwards | 336 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 583 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Stock-based compensation | 8,317 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 8,391 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Property and equipment depreciation | 6,760 us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | 6,415 us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Deferred rent and start-up amortization | 3,930 pbpb_DeferredTaxAssetsDeferredRentAndOther | 3,470 pbpb_DeferredTaxAssetsDeferredRentAndOther
Accrued liabilities | 345 pbpb_DeferredTaxAssetsAccruedLiabilitiesNonCurrent | 347 pbpb_DeferredTaxAssetsAccruedLiabilitiesNonCurrent
FICA and other tax credits | 116 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | 55 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Total deferred tax assets | 20,921 us-gaap_DeferredTaxAssetsGross | 20,595 us-gaap_DeferredTaxAssetsGross
Less: valuation allowance | (68)us-gaap_DeferredTaxAssetsValuationAllowance | (57)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets | 20,853 us-gaap_DeferredTaxAssetsNet | 20,538 us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities-current: |  |
Prepaids | (610)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses | (553)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Deferred tax liabilities-non-current: |  |
Intangible asset | (1,126)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets | (1,012)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Smallwares | (668)pbpb_DeferredTaxLiabilitiesSmallwares | (607)pbpb_DeferredTaxLiabilitiesSmallwares
Other timing differences | (82)us-gaap_DeferredTaxLiabilitiesOther | (288)us-gaap_DeferredTaxLiabilitiesOther
Total gross deferred tax liabilities | (2,486)us-gaap_DeferredIncomeTaxLiabilities | (2,460)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax assets (liabilities) | $ 18,367 us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 18,078 us-gaap_DeferredTaxAssetsLiabilitiesNet

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