Knollbrook Disciplined International Equity ETF S000109335 Member Knollbrook Global Secured Options ETF S000109336 Member Knollbrook Disciplined International Equity ETF C000280443 Member Knollbrook Global Secured Options ETF C000280444 Member Absence of Active Market [Member] Absence Of Active Market Member Shares May Trade at Prices Other than NAV [Member] Shares May Trade At Prices Other Than NAVMember Authorized Participants Risk [Member] Authorized Participants Risk Member Cash Transactions Risk [Member] Cash Transactions Risk Member Market Risk [Member] Market Risk Member Options Risk [Member] Options Risk Member FLEX Options Risk [Member] FLEXOptions Risk Member Frequent Trading Risk [Member] Frequent Trading Risk Member Investment Style Risk [Member] Investment Style Risk Member ADR/Foreign Investment Risk [Member] ADRForeign Investment Risk Member Emerging Markets Risk [Member] Emerging Markets Risk Member Liquidity Risk [Member] Liquidity Risk Member Value Style Risk [Member] Value Style Risk Member Large Shareholder and Large-Scale Redemption Risk [Member] Large Shareholder And Large Scale Redemption Risk Member Exchange-Traded Funds [Member] Exchange Traded Fund Member Stock Selection Model Risk [Member] Stock Selection Model Risk Member MSCI World ex-USA Index (reflects no deduction for fees, expenses or taxes) index_ MSCI_ World_ex USA_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member Morningstar Foreign Large Value Average index_ Morningstar_ Foreign_ Large_ Value_ Average Member MSCI ACWI Index (reflects no deduction for fees, expenses or taxes) index_ MSCI_ ACWI_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member