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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Jan. 03, 2015
Dec. 28, 2013
Statement Of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 223us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 207us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Convertible preferred stock, par value $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Convertible preferred stock, shares authorized 2,000,000us-gaap_PreferredStockSharesAuthorized 2,000,000us-gaap_PreferredStockSharesAuthorized
Convertible preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Common stock, par value $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 30,000,000us-gaap_CommonStockSharesAuthorized 30,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 9,786,695us-gaap_CommonStockSharesIssued 9,899,483us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 9,786,695us-gaap_CommonStockSharesOutstanding 9,899,483us-gaap_CommonStockSharesOutstanding