Document and Entity Information |
Aug. 07, 2019 |
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| Cover [Abstract] | |
| Entity Registrant Name | G1 Therapeutics, Inc. |
| Amendment Flag | false |
| Entity Central Index Key | 0001560241 |
| Document Type | 8-K |
| Document Period End Date | Aug. 07, 2019 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38096 |
| Entity Tax Identification Number | 26-3648180 |
| Entity Address, Address Line One | 79 T.W. Alexander Drive |
| Entity Address, Address Line Two | 4501 Research Commons |
| Entity Address, Address Line Three | Suite 100 |
| Entity Address, City or Town | Research Triangle Park |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 27709 |
| City Area Code | (919) |
| Local Phone Number | 213-9835 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, $0.0001 par value |
| Trading Symbol | GTHX |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'. No definition available.
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- Definition Address Line 1 such as Attn, Building Name, Street Name No definition available.
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- Definition Indicate if registrant meets the emerging growth company criteria. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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