Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	150,000us-gaap_CommonStockSharesAuthorized	150,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	38,832us-gaap_CommonStockSharesIssued	38,291us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	38,832us-gaap_CommonStockSharesOutstanding	38,291us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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