Annual report pursuant to Section 13 and 15(d)

Restructuring Costs - Summary of Restructuring Charges (Details)

v2.4.1.9
Restructuring Costs - Summary of Restructuring Charges (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Jan. 03, 2015
Sep. 27, 2014
Jun. 28, 2014
Jun. 29, 2013
Mar. 30, 2013
Jan. 03, 2015
Restructuring Cost and Reserve [Line Items]            
Restructuring costs $ 102us-gaap_RestructuringCharges $ 410us-gaap_RestructuringCharges $ 625us-gaap_RestructuringCharges $ 225us-gaap_RestructuringCharges $ 498us-gaap_RestructuringCharges  
Fiscal 2014            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs           1,137us-gaap_RestructuringCharges
/ us-gaap_RestructuringPlanAxis
= prts_Restructuring2014Member
Employee severance | Fiscal 2014            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs           526us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= prts_Restructuring2014Member
Accounts receivable allowance | Fiscal 2014            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs           73us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= prts_AccountsReceivableAllowanceMember
/ us-gaap_RestructuringPlanAxis
= prts_Restructuring2014Member
Relocation costs (employee and equipment) | Fiscal 2014            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs           127us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= prts_EmployeeandEquipmentRelocationMember
/ us-gaap_RestructuringPlanAxis
= prts_Restructuring2014Member
Inventory transfers | Fiscal 2014            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs           $ 411us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= prts_InventoryTransfersMember
/ us-gaap_RestructuringPlanAxis
= prts_Restructuring2014Member