Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Condensed Consolidated Balance Sheets
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	85,000,000us-gaap_CommonStockSharesAuthorized	47,500,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	32,992,178us-gaap_CommonStockSharesIssued	32,931,092us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	32,922,178us-gaap_CommonStockSharesOutstanding	32,931,092us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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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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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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