Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Impact Shares Trust I
Prospectus Date	rr_ProspectusDate	Aug. 24, 2018
Supplement to Prospectus [Text Block]	rr_SupplementToProspectusTextBlock	IMPACT SHARES TRUST I Impact Shares YWCA Women’s Empowerment ETF Ticker: WOMN – NYSE ARCA (the “Fund”) Supplement dated October 26, 2018 to the Summary Prospectus and the Prospectus for the Fund, each dated August 24, 2018, and the Statement of Additional Information (“SAI”) for Impact Shares Trust I dated September 11, 2018, each as supplemented and amended from time to time. This Supplement provides new and additional information beyond that contained in the Prospectus and should be read in conjunction with the Prospectus. The seventh paragraph in the section titled “Principal Investment Strategies” beginning on page 2 of the Summary Prospectus is hereby deleted in its entirety and replaced with the following: The Underlying Index is constructed using a rules based methodology to select companies from the Parent Index that have strong women’s empowerment practices. Morningstar, Inc. (“Morningstar” or the “Index Provider”) constructs the Underlying Index using company level indicators, scores, and indicator relevance weighting from Equileap, the Fund’s ESG research provider. The YWCA USA (“YWCA” or the “Partner Nonprofit”) has reviewed and approved the use of Equileap’s social screens (through the use of the Underlying Index) to measure the strength of women’s empowerment practices and products or services for each company within the Parent Index (a company’s “Gender Diversity Score”). After excluding those companies that Equileap determines are (i) involved in the weapons, gambling, or tobacco industries, (ii) on the Norwegian Ethics Council List¹ or (iii) that have experienced an applicable legal controversy, the 200 best scoring companies (after applying the optimized weighting methodology discussed below) are selected by Morningstar as the final underlying index components. The Underlying Index is constructed by Morningstar using an optimized weighting methodology. Under this methodology, Morningstar uses a quantitative process that is designed to determine optimal weights for securities to maximize exposure to companies with higher rankings as to women’s empowerment practices, while maintaining an Underlying Index that exhibits risk and return characteristics similar to those of the Parent Index. Morningstar determines the weighting of each security in the Underlying Index using the following variables: Gender Diversity Score, market capitalization, and maximum and minimum weightings by security and sector. Underlying Index constituents are subject to a maximum 5% per company weighting.
Impact Shares YWCA Women's Empowerment ETF
Risk/Return:	rr_RiskReturnAbstract
Supplement to Prospectus [Text Block]	rr_SupplementToProspectusTextBlock	IMPACT SHARES TRUST I Impact Shares YWCA Women’s Empowerment ETF Ticker: WOMN – NYSE ARCA (the “Fund”) Supplement dated October 26, 2018 to the Summary Prospectus and the Prospectus for the Fund, each dated August 24, 2018, and the Statement of Additional Information (“SAI”) for Impact Shares Trust I dated September 11, 2018, each as supplemented and amended from time to time. This Supplement provides new and additional information beyond that contained in the Prospectus and should be read in conjunction with the Prospectus. The seventh paragraph in the section titled “Principal Investment Strategies” beginning on page 2 of the Summary Prospectus is hereby deleted in its entirety and replaced with the following: The Underlying Index is constructed using a rules based methodology to select companies from the Parent Index that have strong women’s empowerment practices. Morningstar, Inc. (“Morningstar” or the “Index Provider”) constructs the Underlying Index using company level indicators, scores, and indicator relevance weighting from Equileap, the Fund’s ESG research provider. The YWCA USA (“YWCA” or the “Partner Nonprofit”) has reviewed and approved the use of Equileap’s social screens (through the use of the Underlying Index) to measure the strength of women’s empowerment practices and products or services for each company within the Parent Index (a company’s “Gender Diversity Score”). After excluding those companies that Equileap determines are (i) involved in the weapons, gambling, or tobacco industries, (ii) on the Norwegian Ethics Council List¹ or (iii) that have experienced an applicable legal controversy, the 200 best scoring companies (after applying the optimized weighting methodology discussed below) are selected by Morningstar as the final underlying index components. The Underlying Index is constructed by Morningstar using an optimized weighting methodology. Under this methodology, Morningstar uses a quantitative process that is designed to determine optimal weights for securities to maximize exposure to companies with higher rankings as to women’s empowerment practices, while maintaining an Underlying Index that exhibits risk and return characteristics similar to those of the Parent Index. Morningstar determines the weighting of each security in the Underlying Index using the following variables: Gender Diversity Score, market capitalization, and maximum and minimum weightings by security and sector. Underlying Index constituents are subject to a maximum 5% per company weighting.

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Impact Shares Trust I

Prospectus Date

rr_ProspectusDate

Aug. 24, 2018

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

IMPACT SHARES TRUST I

Impact Shares YWCA Women’s Empowerment ETF

Ticker: WOMN – NYSE ARCA

(the “Fund”)

Supplement dated October 26, 2018 to the Summary Prospectus and the Prospectus for the Fund, each dated August 24, 2018, and the Statement of Additional Information (“SAI”) for Impact Shares Trust I dated September 11, 2018, each as supplemented and amended from time to time.

This Supplement provides new and additional information beyond that contained in the Prospectus and should be read in conjunction with the Prospectus.

The seventh paragraph in the section titled “Principal Investment Strategies” beginning on page 2 of the Summary Prospectus is hereby deleted in its entirety and replaced with the following:

The Underlying Index is constructed using a rules based methodology to select companies from the Parent Index that have strong women’s empowerment practices. Morningstar, Inc. (“Morningstar” or the “Index Provider”) constructs the Underlying Index using company level indicators, scores, and indicator relevance weighting from Equileap, the Fund’s ESG research provider. The YWCA USA (“YWCA” or the “Partner Nonprofit”) has reviewed and approved the use of Equileap’s social screens (through the use of the Underlying Index) to measure the strength of women’s empowerment practices and products or services for each company within the Parent Index (a company’s “Gender Diversity Score”). After excluding those companies that Equileap determines are (i) involved in the weapons, gambling, or tobacco industries, (ii) on the Norwegian Ethics Council List¹ or (iii) that have experienced an applicable legal controversy, the 200 best scoring companies (after applying the optimized weighting methodology discussed below) are selected by Morningstar as the final underlying index components. The Underlying Index is constructed by Morningstar using an optimized weighting methodology. Under this methodology, Morningstar uses a quantitative process that is designed to determine optimal weights for securities to maximize exposure to companies with higher rankings as to women’s empowerment practices, while maintaining an Underlying Index that exhibits risk and return characteristics similar to those of the Parent Index. Morningstar determines the weighting of each security in the Underlying Index using the following variables: Gender Diversity Score, market capitalization, and maximum and minimum weightings by security and sector. Underlying Index constituents are subject to a maximum 5% per company weighting.

Impact Shares YWCA Women's Empowerment ETF