Annual report pursuant to Section 13 and 15(d)

AutoMD (Details)

v2.4.1.9
AutoMD (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended 0 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Oct. 08, 2014
Noncontrolling Interest [Line Items]        
Issuance of shares $ 5,665us-gaap_StockIssuedDuringPeriodValueNewIssues $ 1,991us-gaap_StockIssuedDuringPeriodValueNewIssues    
Deferred tax liability as a result of transaction 1,335us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates 0us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates    
Proceeds from sale of equity in subsidiary 7,000us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries 0us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries 0us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries  
AutoMD        
Noncontrolling Interest [Line Items]        
Common stock issued       7,000,000us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Percentage ownership after issuance of shares       64.10%us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Deferred tax liability as a result of transaction 1,335us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
     
Purchase Agreement | AutoMD        
Noncontrolling Interest [Line Items]        
Common stock issued       7,000,000us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Purchase price of shares issued       1.00us-gaap_SaleOfStockPricePerShare
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Percentage ownership after issuance of shares       64.10%us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Issuance of shares       2,534us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Increase in Company's interest       3,847us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Deferred tax liability as a result of transaction       1,313us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Number of shares the Company may be required to purchase       2,000,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Share price       1.00us-gaap_SharePrice
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Period following closing date the Company is subject to stock repurchase       2 years
Proceeds from sale of equity in subsidiary       7,000us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Annual interest rate in event of default of agreement terms       10.00%prts_RelatedPartyTransactionEventofDefaultPercentageInterestRate
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Purchase Agreement | Directors | AutoMD        
Noncontrolling Interest [Line Items]        
Number of board members affiliated with the transaction       2prts_NumberofBoardMembersAffiliatedwithTransaction
/ us-gaap_RelatedPartyTransactionAxis
= prts_CommonStockPurchaseAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Investor Rights Agreement | AutoMD        
Noncontrolling Interest [Line Items]        
Share price       1.00us-gaap_SharePrice
/ us-gaap_RelatedPartyTransactionAxis
= prts_InvestorRightsAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Minimum ownership percentage required by the Company in agreement       50.00%prts_NoncontrollingInterestMinimumRequiredOwnershipPercentagebyParent
/ us-gaap_RelatedPartyTransactionAxis
= prts_InvestorRightsAgreementMember
/ us-gaap_StatementBusinessSegmentsAxis
= prts_AutoMdMember
Number of days written notice in event of default of agreement terms       30 days