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Concentrations of Credit Risk (Details) (Cash [Member], USD $)
 9 Months Ended
Jan. 31, 2015
Cash [Member]
  
Concentration Risk [Line Items]  
Credit Risk due to Bank Failure $ 0ttlo_CreditRiskDueToBankFailure
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CashMember