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Common Stock Options (Details) (USD $)
3 Months Ended 12 Months Ended
Apr. 15, 2015
Dec. 31, 2014
Dec. 31, 2013
Number Outstanding      
Outstanding at Beginning of Period 152,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 304,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Granted        
Forfeited   (152,500)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod   
Exercised        
Outstanding at End of Period   152,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 304,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Exercisable   52,000QTXB_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisable  
Weighted Average Exercise Price Per Share      
Outstanding $ 1.34QTXB_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice2 $ 0.91QTXB_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice2  
Granted $ 0.04us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice      
Forfeited   $ (0.47)us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice   
Exercised        
Outstanding   $ 1.34QTXB_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice2 $ 0.91QTXB_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice2
Weighted average exercise price, Exercisable   $ 1.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice