Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Unaudited) (Parenthetical)

v2.4.1.9
Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Apr. 04, 2015
Jan. 03, 2015
Accounts receivable, allowances $ 38us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 41us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Common stock, par value (in dollars per share) $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 100,000,000us-gaap_CommonStockSharesAuthorized 100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 33,949,000us-gaap_CommonStockSharesIssued 33,624,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 33,949,000us-gaap_CommonStockSharesOutstanding 33,624,000us-gaap_CommonStockSharesOutstanding
Series A Convertible Preferred Stock    
Series A convertible preferred stock, par value (in dollars per share) $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
$ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
Share liquidation value (in dollars per share) $ 1.45us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
$ 1.45us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
Share aggregate value $ 6,017us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
$ 6,017us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
Series A convertible preferred stock, shares authorized (in shares) 4,150,000us-gaap_PreferredStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
4,150,000us-gaap_PreferredStockSharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
Series A convertible preferred stock, shares issued (in shares) 4,150,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
4,150,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
Series A convertible preferred stock, shares outstanding (in shares) 4,150,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember
4,150,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= prts_SeriesConvertiblePreferredStockMember