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1. Organization and Significant Accounting Policies - Potentially dilutive securities (Details)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Basic and diluted weighted average common stock shares outstanding 10,447,030us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 5,007,999us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Common stock options    
Potentially dilutive securities excluded from loss per share computations:    
Shares 1,390,770us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
1,417,309us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
Warrants    
Potentially dilutive securities excluded from loss per share computations:    
Shares 7,428,141us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember
517,858us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember