CarParts.com, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies and Nature of Operations (Policies)
Notes Tables
Notes Details

Employee Retirement Plan and Deferred Compensation Plan - Additional Information (Detail)

v2.4.1.9

Employee Retirement Plan and Deferred Compensation Plan - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Jan. 31, 2010
Compensation and Retirement Disclosure [Abstract]
Minimum service period required to cover under plan	1 month
Employer's match per dollar of participants salary	$ 0.50
Employer's match percentage of participants salary	6.00%
Contributions vest in annual installments	3 years
Discretionary contributions	256,000	266,000	324,000
Highly Compensated Employees
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Participant deferral of base salary, percentage (up to)				90.00%
Participant deferral of annual earned bonus, percentage (up to)				100.00%
Deferred compensation plan vested				100.00%
Employer contribution percentage of eligible participants eligible contribution				50.00%
Employer matching contribution, percentage of participants eligible contributions				2.00%
Increase (decrease) in deferred compensation, employee contribution	127,000	126,000
Increase (decrease) in deferred compensation, employer contribution	32,000	38,000
Increase (decrease) in deferred compensation, earnings	43,000	104,000
Increase (decrease) in deferred compensation, distributions	291,000	82,000
Gain (loss) on change in cash surrender value	22,000	73,000
Other non-current assets \| Highly Compensated Employees
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plan assets	854,000	876,000
Other non-current liabilities \| Highly Compensated Employees
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plan associated liabilities	$ 749,000	$ 838,000

- Definition

Change in cash surrender value of life insurance

+ References

No definition available.

+ Details

Name:	prts_ChangeInCashSurrenderValueOfLifeInsurance
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage of Annual Earned Bonus

+ References

No definition available.

+ Details

Name:	prts_DeferredCompensationArrangementwithIndividualCashAwardsGrantedPercentageofAnnualEarnedBonus
Namespace Prefix:	prts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Deferred Compensation Arrangement with Individual, Employer Contribution, Percentage

+ References

No definition available.

+ Details

Name:	prts_DeferredCompensationArrangementwithIndividualEmployerContributionPercentage
Namespace Prefix:	prts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Deferred Compensation Arrangement with Individual, Percentage of Eligible Participants Contribution

+ References

No definition available.

+ Details

Name:	prts_DeferredCompensationArrangementwithIndividualPercentageofEligibleParticipantsContribution
Namespace Prefix:	prts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Deferred Compensation Arrangement with Individual, Vesting Percentage

+ References

No definition available.

+ Details

Name:	prts_DeferredCompensationArrangementwithIndividualVestingPercentage
Namespace Prefix:	prts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Defined Contribution Plan, Employer Matching Contribution, Per Dollar

+ References

No definition available.

+ Details

Name:	prts_DefinedContributionPlanEmployerMatchingContributionPerDollar
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Defined Contribution Plan, Employers Matching Contribution, Annual Installment Vesting Period

+ References

No definition available.

+ Details

Name:	prts_DefinedContributionPlanEmployersMatchingContributionAnnualInstallmentVestingPeriod
Namespace Prefix:	prts_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Defined Contribution Plan, Requisite Service Period

+ References

No definition available.

+ Details

Name:	prts_DefinedContributionPlanRequisiteServicePeriod
Namespace Prefix:	prts_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Increase (Decrease) in Deferred Compensation, Distributions

+ References

No definition available.

+ Details

Name:	prts_IncreaseDecreaseinDeferredCompensationDistributions
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase (Decrease) in Deferred Compensation, Earnings

+ References

No definition available.

+ Details

Name:	prts_IncreaseDecreaseinDeferredCompensationEarnings
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase (Decrease) in Deferred Compensation, Employee Contributions

+ References

No definition available.

+ Details

Name:	prts_IncreaseDecreaseinDeferredCompensationEmployeeContributions
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase (Decrease) in Deferred Compensation, Employer Contributions

+ References

No definition available.

+ Details

Name:	prts_IncreaseDecreaseinDeferredCompensationEmployerContributions
Namespace Prefix:	prts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Commitment made to pay deferred cash remuneration expressed as a percentage of the individual's base salary.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredCompensationArrangementWithIndividualCashAwardsGrantedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable after one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prts_HighlyCompensatedEmployeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: