Label

Element

Value

Prospectus [Line Items]

rr_ProspectusLineItems

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Defiance Israel Bond ETF (CHAI)

(the “Fund”)

February 1, 2024

Supplement to the

Prospectus, and Statement of Additional Information,

each dated December 11, 2023

Effective February 16, 2024 the Fund’s name will change to the “Defiance Israel Fixed Income ETF.” All references in the Fund’s Prospectus and Statement of Additional Information to the Fund’s previous name are replaced with the new name.

Supplement Closing [Text Block]

ck0001540305_SupplementClosing

Please retain this Supplement with your Prospectus,

and Statement of Additional Information for future reference.

Defiance Israel Bond ETF

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Defiance Israel Fixed Income ETF

Defiance Israel Bond ETF | Defiance Israel Bond ETF

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

CHAI