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STOCKHOLDERS' EQUITY (Details 2) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Statement of Stockholders' Equity [Abstract] |  |
Warrants, Outstanding at Beginning Balance | 913,379 | 1,186,749
Warrants, Issued | 0 | 0
Warrants, Exercised | (887,585) | (273,370)
Warrants, Expired | (25,794) | 0
Warrants, Outstanding at Ending Balance | 0 | 913,379
Weighted - average exercise price of Warrants, Outstanding at Beginning Balance | $ 2.41 | $ 2.37
Weighted - average exercise price of Warrants, Issued | 0.00 | 0.00
Weighted - average exercise price of Warrants, Exercised | 2.41 | 2.26
Weighted - average exercise price of Warrants, Expired | 0.00 | 2.25
Weighted - average exercise price of Warrants, Outstanding at Ending Balance | $ 0.00 | $ 2.41
Aggregate Intrinsic Value of Warrants, Outstanding at Beginning Balance | $ 1,961,403 | $ 11,341,452
Aggregate Intrinsic Value of Warrants, Outstanding at Ending Balance | $ 0 | $ 1,961,403

X
- Definition Reflects the aggregate intrinsic value of warrants outstanding. + References No definition available. + Details
Name: | tgtx_WarrantOrRightAggregateIntrinsicValue
Namespace Prefix: | tgtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reflects the number of warrants exercised during the period. + References No definition available. + Details
Name: | tgtx_WarrantOrRightExercised
Namespace Prefix: | tgtx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the weighted average exercise price of warrants Exercised. + References No definition available. + Details
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Namespace Prefix: | tgtx_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the number of warrants expired during the period. + References No definition available. + Details
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Namespace Prefix: | tgtx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the weighted average exercise price of warrants Expired. + References No definition available. + Details
Name: | tgtx_WarrantOrRightExpiredWeightedAverageExercisePrice
Namespace Prefix: | tgtx_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the number of warrants issued during the period. + References No definition available. + Details
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Namespace Prefix: | tgtx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | tgtx_
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Balance Type: | na
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- Definition Reflects the weighted average exercise price of warrants outstanding. + References No definition available. + Details
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Namespace Prefix: | tgtx_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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