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COMMITMENTS AND CONTINGENCIES (Details 1) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Research and Development Arrangement, Contract to Perform for Others [Line Items]    
Research and development expenses $ 227,996us-gaap_OtherResearchAndDevelopmentExpense $ 214,301us-gaap_OtherResearchAndDevelopmentExpense
General and administrative expenses 149,174us-gaap_OtherGeneralAndAdministrativeExpense 121,201us-gaap_OtherGeneralAndAdministrativeExpense
Total rent expense $ 377,170atos_OtherResearchAndDevelopmentAndGeneralAndAdministrationExpenses $ 335,502atos_OtherResearchAndDevelopmentAndGeneralAndAdministrationExpenses