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v2.4.1.9

Derivatives (Details) (USD $) | 3 Months Ended
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Mar. 31, 2015
Schedule of derivative warrant instruments activity |
Beginning balance, Shares subject to warrants | 1,649,329 atnm_DerivativeWarrantsUnits
Transfer from liability to equity classification | $ (21,960)atnm_TransferFromLiabilityClassificationToEquityClassification
Ending Balance, Shares subject to warrants | 1,627,369 atnm_DerivativeWarrantsUnits
Beginning balance, Fair Value | 6,709,911 us-gaap_DerivativeFairValueOfDerivativeNet
Transfer from liability classification to equity classification, Fair Value | (48,691)atnm_FairValueOfTransferFromLiabilityClassificationToEquityClassification
Change in fair value | (4,796,378)atnm_ChangeInFairValueOfDerivativeWarrants
Balance, Fair Value | $ 1,864,842 us-gaap_DerivativeFairValueOfDerivativeNet

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