Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Common stock par value	$ 0.001	$ 0.001
Common stock shares authorized	300,000,000us-gaap_CommonStockSharesAuthorized	300,000,000us-gaap_CommonStockSharesAuthorized
Common stock shares issued	93,944,742us-gaap_CommonStockSharesIssued	91,441,771us-gaap_CommonStockSharesIssued
Common stock shares outstanding	93,899,968us-gaap_CommonStockSharesOutstanding	91,441,771us-gaap_CommonStockSharesOutstanding
Preferred stock par value	$ 0.001	$ 0.001
Preferred stock shares authorized	10,000,000us-gaap_PreferredStockSharesAuthorized	10,000,000us-gaap_PreferredStockSharesAuthorized

Face amount or stated value per share of common stock.

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