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9. Net Loss per Common Share (Details)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Basic and diluted weighted average common stock shares outstanding 12,100,588us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 5,568,802us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Common stock options    
Potentially dilutive securities excluded from loss per share computations:    
Shares 1,368,528us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
1,370,465us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
Common stock purchase warrants    
Potentially dilutive securities excluded from loss per share computations:    
Shares 7,428,141us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember
7,428,141us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember