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Borrowings - Additional Information (Detail) (USD $)
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3 Months Ended |
0 Months Ended |
6 Months Ended |
18 Months Ended |
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Apr. 04, 2015
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Jul. 01, 2016
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Jan. 03, 2016
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Dec. 31, 2016
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Jun. 30, 2016
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Jan. 03, 2015
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Mar. 24, 2015
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Mar. 23, 2015
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| Line of Credit Facility [Line Items] |
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| Revolving loan payable |
$ 9,485,000us-gaap_LinesOfCreditCurrent
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$ 11,022,000us-gaap_LinesOfCreditCurrent
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| Principal payments due |
0us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal
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| Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Number of consecutive days excess availability is above required amount |
45 days
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| Event of default amount |
0us-gaap_DebtDefaultLongtermDebtAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
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| Jp Morgan Chase Bank | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Maximum borrowing capacity |
23,318,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Maximum revolving commitment upon fulfillment of certain conditions |
40,000,000prts_BorrowersRightToReviseRevolvingCommitmentsMaximumAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Line of credit facility maturity date |
Apr. 26, 2017
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| Revolving loan payable |
9,485,000us-gaap_LinesOfCreditCurrent
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Aggregate principal amount of indebtedness permitted related to capital leases |
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1,500,000prts_LineofCreditFacilityMaximumAllowedCapitalLeaseObligation
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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1,000,000prts_LineofCreditFacilityMaximumAllowedCapitalLeaseObligation
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Unused credit commitment fee |
0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Minimum availability required trigger amount (if less than) |
4,000,000prts_LineofCreditFacilityMinimumAvailabilityRequiredTriggerAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Cash dominion period exit amount of excess availability |
4,000,000prts_LineofCreditFacilityExcessAvailability
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Excess availability under credit facility |
10,833,000prts_ExcessAvailabilityUnderCreditFacility
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| Early repayment premium percentage |
0.50%prts_EarlyRepaymentofCreditAgreementPremiumRequiredofAggregateRevolvingCommitmentsMultiple
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
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| One-Month London Interbank Offered Rate (LIBOR) | Jp Morgan Chase Bank | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Applicable margin for LIBOR-based interest rate/ Applicable margin for alternate based rate |
2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_VariableRateAxis
= prts_OneMonthLondonInterbankOfferedRateLIBORMember
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| London Interbank Offered Rate (LIBOR) | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Interest rate |
2.44%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
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| LIBOR based interest rate, principal |
9,485,000prts_LiborBasedRatePrincipal
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
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| Base Rate | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Interest rate |
3.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
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| Prime based rate, principal |
0prts_PrimeBasedRatePrincipal
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
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| Base Rate | Jp Morgan Chase Bank | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Applicable margin for LIBOR-based interest rate/ Applicable margin for alternate based rate |
0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
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| Scenario, Forecast | Jp Morgan Chase Bank | Revolving Credit Facility |
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| Line of Credit Facility [Line Items] |
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| Decrease to the applicable margin (up to) |
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0.50%prts_ApplicableMarginRateIncreaseDecrease
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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| Minimum availability required trigger amount (if less than) |
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2,000,000.0prts_LineofCreditFacilityMinimumAvailabilityRequiredTriggerAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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| Limited security by foreign subsidiaries capital stock percentage |
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65.00%prts_CapitalStockPercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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| Premium required |
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0prts_EarlyRepaymentofCreditAgreementPremiumRequired
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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| Minimum availability required under availability block |
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$ 2,000,000.0prts_LineofCreditFacilityMinimumAvailabilityRequiredunderAvailabilityBlockAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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| Minimum fixed charge ratio if less than minimum excess availability |
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1.0prts_LineofCreditFacilityCovenantTermsMinimumFixedChargeCoverageRatio
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= prts_JPMorganChaseBankMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
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