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Consolidated Statements of Changes in Shareholders Equity (Parenthetical) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2014
Statements Of Changes In Shareholders' Equity [Abstract]    
Net of offering costs $ 902,158us-gaap_OtherOwnershipInterestsOfferingCosts $ 344,808us-gaap_OtherOwnershipInterestsOfferingCosts
Issuance of common stock, net of costs $ 71,949us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts