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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Apr. 03, 2015
Jan. 02, 2015
Accounts receivable, allowance for contract losses and doubtful accounts $ 3,596us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 3,386us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Common stock, par value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 100,000us-gaap_CommonStockSharesAuthorized 100,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 16,427us-gaap_CommonStockSharesIssued 16,427us-gaap_CommonStockSharesIssued
Treasury stock, shares 3,436us-gaap_TreasuryStockShares 3,556us-gaap_TreasuryStockShares