Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details Textual)

v2.4.1.9
Related Party Transactions (Details Textual) (USD $)
0 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 6 Months Ended 0 Months Ended
Jul. 10, 2014
Mar. 24, 2014
Apr. 28, 2014
Dec. 31, 2014
Dec. 09, 2013
Aug. 07, 2012
Dec. 31, 2013
Jun. 30, 2014
Sep. 04, 2013
Jan. 31, 2014
Dec. 31, 2012
Mar. 27, 2012
Related Party Transactions (Textual)                        
Placement agent services fees $ 455,108atnm_PlacementAgentServicesFees                      
Common stock exercise price per share       $ 9.00atnm_CommonStockExercisePriceParOrStatedValuePerShare                
Amount paid to placement agent       75,000atnm_AmountPaidToPlacementAgent                
Common stock sold, Shares 157,123us-gaap_StockIssuedDuringPeriodSharesNewIssues   500us-gaap_StockIssuedDuringPeriodSharesNewIssues                  
Common stock, par value       $ 0.001us-gaap_CommonStockParOrStatedValuePerShare     $ 0.001us-gaap_CommonStockParOrStatedValuePerShare          
Aggregate offering amount of securities sold to investors   The Company will pay MLV in cash, upon the sale of common stock pursuant to the Sales Agreement, an amount equal to 3.0% of the gross proceeds from the sale of common stock. On April 28, 2014, the Company issued 500 shares and received net proceeds of $6,000 under the Sales Agreement with MLV.                    
Placement agent [Member]                        
Related Party Transactions (Textual)                        
Placement agent services fees       397,303atnm_PlacementAgentServicesFees
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
    399,103atnm_PlacementAgentServicesFees
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
         
Warrants issued to purchase common stock, shares       68,976atnm_WarrantsIssuedToPurchaseCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
    69,289atnm_WarrantsIssuedToPurchaseCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
         
Common stock exercise price per share       $ 9atnm_CommonStockExercisePriceParOrStatedValuePerShare
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
               
Description of receivables of placement agent for services         Agreement entered in on December 9, 2013 had similar terms as the 2012 agreement, including a cash fee equal to 10% of the gross proceeds raised, a non-accountable expense reimbursement equal to 2% of the gross proceeds raised and warrants to purchase shares of the Company's Common Stock
Placement agent received (a) a cash fee equal to 10% of the gross proceeds raised in the 2012 Common Stock Offering, (b) a non-accountable expense reimbursement equal to 2% of the gross proceeds raised in the 2012 Common Stock Offering, and (c) reimbursement of $100,000 for legal expenses incurred by the placement agent.
           
Description of warrants receivables by placement         Warrants to purchase shares of the Company's Common Stock in an amount equal to 10% of the shares of common stock issued or issuable The placement agent or its designees also received warrants to purchase shares of the Company's Common Stock in an amount equal to 10% of the shares of common stock issued as part of the units sold in the 2012 Common Stock Offering and the shares of Common Stock issuable upon exercise of the B warrants included in such units.            
Period of exercise of warrants       5 years   Within 6 months of the final closing of the 2012 common stock Offering            
Percentage of solicitation fee           5.00%atnm_PercentageOfSolicitationFee
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
           
Monthly fee for financial advisory services         25,000atnm_PeriodicFeeForFinancialAdvisoryServices
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
25,000atnm_PeriodicFeeForFinancialAdvisoryServices
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
           
Description of additional receivable by placement agent           The agreement also provides that (i) if the Company consummates any merger, acquisition, business combination or other transaction (other than the Share Exchange) with any party introduced to it by the placement agent, the placement agent would receive a fee equal to 10% of the aggregate consideration in such transactions, and (ii) if, within a period of 12 months after termination of the advisory services described above, the Company requires a financing or similar advisory transaction the placement agent will have the right to act as the Company's financial advisor and investment banker in such financing or transaction pursuant to a set fee schedule set forth in the August 7, 2012 engagement agreement.            
Repayment of amount paid to placement agent       25,000us-gaap_RepaymentsOfDebt
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
               
Common Stock [Member]                        
Related Party Transactions (Textual)                        
Common stock sold, Shares       2,336,658us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
    2,336,988us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
         
Common Stock [Member] | Placement agent [Member]                        
Related Party Transactions (Textual)                        
Class of Warrant or Right, Exercise Price of Warrants or Rights                   $ 6.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= atnm_PlacementAgentMember
   
Warrant [Member]                        
Related Party Transactions (Textual)                        
Warrants issued to purchase common stock, shares             122,000atnm_WarrantsIssuedToPurchaseCommonStock
/ us-gaap_StatementClassOfStockAxis
= us-gaap_WarrantMember
         
Sale of Stock, Price Per Share                   $ 9.00us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_WarrantMember
   
IPO [Member]                        
Related Party Transactions (Textual)                        
Other expenses               125,000us-gaap_OtherExpenses
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
       
Common stock sold, Shares 1,827,123us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
            1,670,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
       
Auditor Fees               72,000atnm_AuditorFees
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
       
Common stock, par value               $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
       
Sale of Stock, Price Per Share $ 7.50us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
            $ 7.50us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_IPOMember
       
MSKCC [Member]                        
Related Party Transactions (Textual)                        
Royalty description       Under the agreement, the Company shall pay to MSKCC on a country-by-country basis a royalty of 2% of net sales of all licensed products until the later of: (1) 10 years from the first commercial sale, or (2) when the patents expire.                
MSKCC [Member] | Clinical Trial Agreement [Member]                        
Related Party Transactions (Textual)                        
Maintenance fees       189,537atnm_MaintenanceFeesAndResearchPayments
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
    81,185atnm_MaintenanceFeesAndResearchPayments
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
         
Amount paid to each patient after Completing clinical trial                       31,185atnm_AmountPaidToEachPatient
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
Start-up fee for clinical trial                     79,623atnm_StartUpFeeForClinicalTrial
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
 
Other expenses       62,370us-gaap_OtherExpenses
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
    0us-gaap_OtherExpenses
/ atnm_AgreementAxis
= atnm_ClinicalTrialAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_MemorialSloanKetteringCancerCenterMember
         
SKI [Member] | License, Development and Commercialization Agreement [Member]                        
Related Party Transactions (Textual)                        
Amount owed under agreement from 2011 to 2014                 815,100atnm_OwedAmountUnderAgreementInYearTwoThousandElevenToFourteen
/ atnm_AgreementAxis
= atnm_LicenseDevelopmentAndCommercializationAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_SloanKetteringInstituteOfCancerResearchMember
     
Maintenance fees       $ 184,556atnm_MaintenanceFeesAndResearchPayments
/ atnm_AgreementAxis
= atnm_LicenseDevelopmentAndCommercializationAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_SloanKetteringInstituteOfCancerResearchMember
    $ 232,730atnm_MaintenanceFeesAndResearchPayments
/ atnm_AgreementAxis
= atnm_LicenseDevelopmentAndCommercializationAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= atnm_SloanKetteringInstituteOfCancerResearchMember