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Commitments and Contingencies (Details Textual) (USD $) | 3 Months Ended | 166 Months Ended | 0 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended |  |  | 3 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended |  |  |  |  | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended |
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 | Jan. 27, 2014 Manufacturing Agreement [Member] | Mar. 31, 2014 Manufacturing Agreement [Member] | Aug. 31, 2012 Rental Agreement [Member] | Mar. 31, 2014 Rental Agreement [Member] | Mar. 31, 2014 Abbott Biotherapeutics Corp [Member] Product Development and Patent License Agreement [Member] | Mar. 31, 2014 Abbott Biotherapeutics Corp [Member] After First Net Sales [Member] | Mar. 31, 2014 Abbott Biotherapeutics Corp [Member] After First Net Sales [Member] Product Development and Patent License Agreement [Member] | Mar. 31, 2014 Abbott Biotherapeutics Corp [Member] Phase I Clinical Trial of a licensed product [Member] | Dec. 31, 2012 MSKCC [Member] Clinical Trial Agreement [Member] | Mar. 27, 2012 MSKCC [Member] Clinical Trial Agreement [Member] | Mar. 31, 2014 Oak Ridge National Laboratory [Member] | Mar. 31, 2014 Oak Ridge National Laboratory [Member] 2013 [Member] | Mar. 31, 2014 Oak Ridge National Laboratory [Member] 2014 [Member] | May 16, 2013 Aptiv Solutions [Member] | Oct. 22, 2012 Aptiv Solutions [Member] | Aug. 06, 2012 Aptiv Solutions [Member] | Dec. 31, 2007 Aptiv Solutions [Member] | Mar. 31, 2014 Aptiv Solutions [Member] | Dec. 31, 2012 Aptiv Solutions [Member] | Jun. 15, 2012 Fred Hutchinson Cancer Research Center [Member] license and sponsored research agreement [Member] | Mar. 31, 2014 Fred Hutchinson Cancer Research Center [Member] license and sponsored research agreement [Member] | Mar. 31, 2013 Fred Hutchinson Cancer Research Center [Member] license and sponsored research agreement [Member] | Mar. 31, 2014 Fred Hutchinson Cancer Research Center [Member] Clinical Trial Agreement [Member] | Dec. 31, 2013 Fred Hutchinson Cancer Research Center [Member] Clinical Trial Agreement [Member] | Jul. 19, 2012 Fred Hutchinson Cancer Research Center [Member] Clinical Trial Agreement [Member] | Jun. 15, 2012 Fred Hutchinson Cancer Research Center [Member] Maximum [Member] license and sponsored research agreement [Member] | Jun. 15, 2012 Fred Hutchinson Cancer Research Center [Member] Minimum [Member] license and sponsored research agreement [Member] | Aug. 28, 2012 University of Texas M.D. Anderson Cancer Center [Member] Clinical Trial Agreement [Member] patients | Jul. 31, 2013 University of Texas M.D. Anderson Cancer Center [Member] Clinical Trial Agreement [Member] | Sep. 26, 2012 Johns Hopkins University [Member] Clinical Trial Agreement [Member] | Mar. 31, 2014 Johns Hopkins University [Member] Clinical Trial Agreement [Member] | Nov. 21, 2012 University of Pennsylvania [Member] Clinical Trial Agreement [Member] | Dec. 31, 2013 University of Pennsylvania [Member] Clinical Trial Agreement [Member]
Commitments and Contingencies (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales in milestones payment |  |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
License fee payment |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Milestones payments |  |  |  |  |  |  |  | 7,750,000 | 1,500,000 |  | 750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of royalty payment |  |  |  |  |  |  |  | Company shall pay to Abbott Biotherapeutics Corp on a country-by-country basis a royalty of 12% of net sales of all licensed products until the later of: (1) 12.5 years after the first commercial sale, or (2) when the patents expire. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Royalty payments of 2% of net sales will be due to FHCRC. |  |  |  |  |  |  |  |  |  |  |  |
Royalty of Net Sales Percentage |  |  |  |  |  |  |  | 12.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First commercial sale period |  |  |  |  |  |  |  | 12 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of radioactive material used for research and development |  |  |  |  |  |  |  |  |  |  |  |  |  | 233,100 | 300,000 | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Project estimated cost for clinical trials of drug Ac-225-HuM195 |  |  |  | 2,813,960 | 2,077,000 |  |  |  |  |  |  |  |  |  |  |  | 2,200,000 | 2,200,000 | 2,200,000 |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Down payment of project estimated cost percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Down payment for project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,900,000 | 239,000 |  | 239,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Clinical trial cost for approval of food and drug administration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23,500,000 | 13,200,000 |  |  |  |  |  |
Fund for Fred Hutchinson Cancer Research Center lab ( Per year for the first two years ) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Fund for Fred Hutchinson Cancer Research Center lab ( thereafter ) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Patients |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24 |  |  |  |  |
Amount paid to each patient after Completing clinical trial |  |  |  |  |  |  |  |  |  |  |  |  | 31,185 |  |  |  |  |  |  |  |  |  |  |  |  | 16,000 |  | 31,366 |  |  | 500,000 | 34,383 | 38,501 |  | 31,771 |
Start-up fee for clinical trial |  |  |  |  |  |  |  |  |  |  |  | 79,623 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19,749 |  |  |  | 33,946 |  | 22,847 |  | 16,000 |
Start-up due cost paid date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2013 |  |  |  |  |
Non - refundable institutional fee |  |  |  | 562,790 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,500 |  |  |  |  |
Annual pharmacy fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,025 |  |  |
Amendment processing fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |  |  |
Notice period for termination of agreement |  |  |  |  |  |  | This agreement terminates on July 6, 2014. Upon the expiration of the term, the agreement automatically renews on a month-to-month basis and requires a two month notice of termination. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent agreement termination date |  |  |  |  |  | Mar. 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rental agreement renewal description |  |  |  |  |  |  | The agreement automatically renews on a month-to-month basis and requires a two month notice of termination. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,000
Accrued fees paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,000 |
Research recorded fees | $ 2,460,968 | $ 1,085,707 | $ 31,548,346 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 37,500 | $ 37,500 |  |  |  |  |  |  |  |  |  |  |

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