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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Summary of concentrations of net accounts receivable with customers    
Subtotal $ 1,372us-gaap_AccountsReceivableGross $ 645us-gaap_AccountsReceivableGross
Allowance for doubtful accounts (390)us-gaap_AllowanceForDoubtfulAccountsReceivable   
Accounts receivable, net 982us-gaap_AccountsReceivableNetCurrent 645us-gaap_AccountsReceivableNetCurrent
Maximum Human Performance [Member]    
Summary of concentrations of net accounts receivable with customers    
Subtotal    645us-gaap_AccountsReceivableGross
/ us-gaap_ConcentrationRiskByTypeAxis
= atth_MaximumHumanPerformanceMember
Cenegenics [Member]    
Summary of concentrations of net accounts receivable with customers    
Subtotal $ 1,372us-gaap_AccountsReceivableGross
/ us-gaap_ConcentrationRiskByTypeAxis
= atth_CenegenicsMember