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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Apr. 04, 2015
Jan. 03, 2015
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 1,940us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 1,890us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Preferred stock, par value $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, par value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 100,000,000us-gaap_CommonStockSharesAuthorized 100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares outstanding 52,617,000us-gaap_CommonStockSharesOutstanding 52,594,000us-gaap_CommonStockSharesOutstanding
Treasury stock, shares 8,861,000us-gaap_TreasuryStockShares 8,611,000us-gaap_TreasuryStockShares