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FAIR VALUE MEASUREMENTS (Details 1) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Measurement Changes In Level 3 Instruments [Line Items]    
Balance at January $ 64,529us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue $ 2,479,098us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Interest accrued on face value of 5% Notes 930,701tgtx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityInterestAccruedIncludedInEarnings 886,382tgtx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityInterestAccruedIncludedInEarnings
Change in fair value of Level 3 liabilities (720,040)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease (3,300,951)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Balance at December $ 275,190us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue $ 64,529us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue