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Commitments and Contingencies (Details) $ in Millions | 1 Months Ended
--- | ---
Jun. 15, 2012 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Milestone payment | $ 1
Description of royalty payment | Upon commercial sale of the drug, royalty payments of 2% of net sales will be due to FHCRC.

X
- Definition Description of royalty payment to related party. + References No definition available. + Details
Name: | atnm_DescriptionOfRoyaltyPaymentToRelatedParty
Namespace Prefix: | atnm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of milestone payment. + References No definition available. + Details
Name: | atnm_MilestonePayment
Namespace Prefix: | atnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration