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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Issuance of common stock for cash, financing costs $ 585,000 $ 164,695 $ 41,838
Issuance of common stock and warrants for cash, financing costs 783,000   1,300,000
Warrants For Cash [Member]
      
Issuance of common stock and warrants for cash, financing costs     $ 314,871