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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 164us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 223us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Common stock, par value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 75,000,000us-gaap_CommonStockSharesAuthorized 75,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 39,775,000us-gaap_CommonStockSharesIssued 39,660,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 39,775,000us-gaap_CommonStockSharesOutstanding 39,660,000us-gaap_CommonStockSharesOutstanding
Preferred stock, shares authorized 500,000us-gaap_PreferredStockSharesAuthorized 500,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding