v3.25.2
Investment Risks
Jul. 29, 2025
Obra Opportunistic Structured Products ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The loss of your money is a principal risk of investing in the Fund.
Obra Opportunistic Structured Products ETF | Structured Products Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Structured Products Risk. The Fund will primarily invest in structured products. The structured products may include investments in securitizations and other asset-backed securities. Among other risks, the products (i) are subject to the risks associated with the underlying assets; (ii) will often be leveraged, which will generally magnify the opportunities for gain and risk of loss; (iii) are highly complex, which may cause disputes as to their terms and impact the valuation and liquidity of such positions; and (iv) often contain significant obstacles to asserting “putback” or similar claims against the products.
Obra Opportunistic Structured Products ETF | Mortgage- and Asset-Backed Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Mortgage- and Asset-Backed Securities Risk. In addition to other risks commonly associated with investing in debt securities, MBS are subject to “prepayment risk” and “extension risk.” Prepayment risk is the risk that, when interest rates fall, certain types of obligations will be paid off by the obligor more quickly than originally anticipated, and the Fund may have to invest the proceeds in securities with lower yields. MBS are priced with an expectation of some anticipated level of prepayment of principal. Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the obligor more slowly than anticipated causing the value of these securities to fall. MBS are also subject to the risk of default on the underlying mortgages, particularly during periods of economic downturn. Reduced investor demand for mortgage loans and mortgage- related securities may adversely affect the liquidity and market value of MBS. The risks associated with investing in ABS are similar to those associated with investing in MBS. ABS also entail certain risks not presented by MBS, including the risk that in certain states it may be difficult to perfect the liens securing the collateral backing certain ABS. In addition, certain ABS are based on loans that are unsecured, which means that there is no collateral to seize if the underlying borrower defaults.
Obra Opportunistic Structured Products ETF | Below Investment Grade Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Below Investment Grade Securities Risk. The Fund may invest in securities that are rated below investment grade.  Securities in this rating category are speculative and are usually issued by companies without long track records of sales and earnings, or by those companies with questionable credit strength.  Credit risk is greater for securities rated below investment grade than for investment grade securities, which is the risk that issuers will not make payments on securities held by the Fund, resulting in losses to the Fund. Changes in economic conditions or other circumstances may have a greater effect on the ability of issuers of these securities to make principal and interest payments than they do on issuers of higher-grade securities. The retail secondary market for below investment grade securities may be less liquid than that of higher-rated securities and adverse conditions could make it difficult at times to sell certain securities or could result in lower prices.
Obra Opportunistic Structured Products ETF | Covenant-Lite Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Covenant-Lite Risk. Some of the below investment grade loans or debt obligations in which the Fund may invest or get exposure to may be “covenant-lite”, which means the loans or obligations contain fewer financial maintenance covenants than other loans or obligations (in some cases, none) and do not include terms which allow the lender to monitor the borrower’s performance and declare a default if certain criteria are breached. An investment by the Fund in a covenant-lite loan may potentially hinder the ability to reprice credit risk associated with the issuer and reduce the ability to restructure a problematic loan and mitigate potential loss. The Fund may also experience difficulty, expenses or delays in enforcing its rights on its holdings of covenant-lite loans or obligations. As a result of these risks, the Fund’s exposure to losses may be increased, which could result in an adverse impact on the Fund’s net income and NAV.
Obra Opportunistic Structured Products ETF | Credit/Default Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Credit/Default Risk. Credit risk is the risk that issuers or guarantors of debt instruments or the counterparty to a derivatives contract, repurchase agreement, or loan of portfolio securities is unable or unwilling to make timely interest and/or principal payments or otherwise honor its obligations. Changes in the financial condition of an issuer or counterparty, changes in specific economic, social or political conditions that affect a particular type of security or other instrument or an issuer, and changes in economic, social, or political conditions generally can increase the risk of default by an issuer or counterparty, which can affect a security’s or other instrument’s credit quality or value and an issuer’s or counterparty’s ability to pay interest and principal when due. Debt instruments are subject to varying degrees of credit risk, which may be reflected in credit ratings. Securities issued by the U.S. government have limited credit risk. Credit rating downgrades and defaults (failure to make interest or principal payment) may potentially reduce the Fund’s income and Share price.
Obra Opportunistic Structured Products ETF | Authorized Participant Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Authorized Participant Risk: Only an authorized participant (“Authorized Participant” or “AP”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants).
Obra Opportunistic Structured Products ETF | Small-Cap and Mid-Cap Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Small-Cap and Mid-Cap Securities Risk. The Fund may invest in securities of small-cap and mid-cap companies, which involve greater volatility than investing in larger and more established companies. Small-cap and mid-cap companies can be subject to more abrupt or erratic share price changes than larger, more established companies. Securities of these types of companies have limited market liquidity, and their prices may be more volatile.  You should expect that the value of the Shares will be more volatile than a fund that invests exclusively in large-capitalization companies.
Obra Opportunistic Structured Products ETF | Cash and Cash Equivalents Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cash and Cash Equivalents Risk. At any time, the Fund may have investments in cash or cash equivalents. When a portion of a portfolio is held in cash or cash equivalents, there is the risk that the value of the cash account, including interest, will not keep pace with inflation, thus reducing purchasing power over time.
Obra Opportunistic Structured Products ETF | U.S. Government Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
U.S. Government Securities Risk. U.S. government securities risk refers to the risk that debt securities issued or guaranteed by certain U.S. Government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. Government, and so investments in their securities or obligations issued by them involve credit risk greater than investments in other types of U.S. Government securities.
Obra Opportunistic Structured Products ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Derivatives Risk. Structured products may be linked to derivatives. Derivatives involve special risks and costs and may result in losses to the Fund. The successful use of derivatives requires sophisticated management, and, to the extent that derivatives are used, the Fund will depend on the Advisor’s ability to analyze and manage derivatives transactions. The prices of derivatives may move in unexpected ways, especially in abnormal market conditions. Some derivatives are “leveraged” or may create economic leverage for the Fund and, therefore, may magnify or otherwise increase investment losses to the Fund. The Fund's use of derivatives may also increase the amount of taxes payable by shareholders.
Other risks arise from the potential inability to terminate or sell derivatives positions. A liquid secondary market may not always exist for the Fund's derivatives positions. In fact, many over-the-counter derivative instruments will not have liquidity beyond the counterparty to the instrument. Over-the-counter derivative instruments also involve the risk that the other party will not meet its obligations to the Fund. The use of derivatives also exposes the Fund to operational issues, such as documentation and settlement issues, systems failures, inadequate control and human error.
Derivatives may also involve legal risks, such as insufficient documentation, the lack of capacity or authority of a counterparty to execute or settle a transaction, and the legality and enforceability of derivatives contracts. The U.S. Government and foreign governments have adopted (and may adopt further) regulations governing derivatives markets, including mandatory clearing of certain derivatives, margin and reporting requirements and risk exposure limitations. Regulation of derivatives may make derivatives more costly, limit their availability or utility to the Fund, or otherwise adversely affect their performance or disrupt markets.
Obra Opportunistic Structured Products ETF | Inflation-Indexed Bond Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation-Indexed Bond Risk. Inflation-indexed bonds may change in value in response to actual or anticipated changes in inflation rates in a manner unanticipated by the Fund’s portfolio management team or investors generally. Inflation-indexed bonds are subject to debt securities risks.
Obra Opportunistic Structured Products ETF | Leverage Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Leverage RiskThe use of leverage may exaggerate changes in the Share price and the return on its investments.  Accordingly, the Fund may be more volatile and all other risks, including the risk of loss of an investment, tend to be compounded or magnified.  Borrowing also leads to additional interest expense and other fees that increase the Fund’s expenses.
Obra Opportunistic Structured Products ETF | Transition from LIBOR Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Transition from LIBOR Risk. Although the London Interbank Offered Rate (“LIBOR”) is no longer published as of June 30, 2023, holding of certain of the Fund’s underlying investments may still include a LIBOR reference rate. The elimination of LIBOR and transition to other reference rates, or any other changes or reforms to the determination or supervision of reference rates, could have an adverse impact on the market for, or value of, any securities or payments linked to those reference rates, which may adversely affect Fund performance and/or NAV. Uncertainty and risk still remain regarding the willingness and ability of issuers and lenders to include revised provisions in new and existing contracts or instruments. Consequently, the transition away from LIBOR to other reference rates may still lead to increased volatility and illiquidity in markets that have historically been tied to LIBOR, fluctuations in values of LIBOR-related investments or investments in issuers that utilize LIBOR, increased difficulty in borrowing or refinancing and diminished effectiveness of hedging strategies, potentially adversely affecting Fund performance. Furthermore, the risks associated with the discontinuation of LIBOR and transition to alternative rates may be exacerbated if the work necessary to effect an orderly transition to an alternative reference rate is not completed in a timely manner. The ultimate impact of the discontinuance of LIBOR on the Fund remains uncertain and may result in losses to the Fund. The U.S. Federal Reserve, based on the recommendations of the New York Federal Reserve’s Alternative Reference Rate Committee (comprised of major derivative market participants and their regulators), has begun publishing the Secured Overnight Financing Rate (referred to as “SOFR”), which is their preferred alternative rate for U.S. dollar LIBOR. Proposals for alternative reference rates for other currencies have also been announced or have already begun publication. Markets are in the process of developing in response to these new rates. Although financial regulators and industry working groups have suggested alternative reference rates, such as the European Interbank Offer Rate, the Sterling Overnight Interbank Average Rate and SOFR, there has been no global consensus as to an alternative rate and the process for amending existing contracts or instruments to transition away from LIBOR remains incomplete.
Obra Opportunistic Structured Products ETF | Liquidity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Liquidity Risk. Liquidity risk exists when particular investments would be difficult to purchase or sell, possibly preventing the Fund from selling such illiquid securities at an advantageous time or price, or possibly requiring the Fund to dispose of other investments at unfavorable times or prices in order to satisfy its obligations.
Obra Opportunistic Structured Products ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation Risk.  Fixed income securities are subject to inflation risk.  Because inflation reduces the purchasing power of income produced by existing fixed income securities, the prices at which fixed income securities trade will be reduced to compensate for the fact that the income they produce is worth less.  This potential decrease in market value of fixed income securities would result in a loss in the value of the Fund’s portfolio.
Obra Opportunistic Structured Products ETF | Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Interest Rate Risk. As interest rates rise, the value of fixed income securities held by the Fund are likely to decrease. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. Interest rates in the United States are near historic lows, which may increase the Fund’s exposure to risks associated with rising rates. A wide variety of market factors can cause interest rates to rise, including central bank monetary policy (including the Federal Reserve ending its “quantitative easing” policy of purchasing large quantities of securities issued or guaranteed by the U.S. government), rising inflation, and changes in general economic conditions. Interest rate changes can be sudden and unpredictable. Moreover, rising interest rates may lead to decreased liquidity in the bond markets, making it more difficult for the Fund to value or sell some or all of its bond investments at any given time.
Changes in interest rates may also affect the Share price; for example, a sharp rise in interest rates could cause the Share price to fall. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. Duration is an estimate of a security’s sensitivity to changes in prevailing interest rates that is based on certain factors that may prove to be incorrect. It is therefore not an exact measurement and may not be able to reliably predict a particular security’s price sensitivity to changes in interest rates.
Obra Opportunistic Structured Products ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s portfolio securities, the Advisor will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.
Obra Opportunistic Structured Products ETF | Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Market Risk.  Market risk refers to the possibility that the value of securities held by the Fund may decline due to daily fluctuations in the market.  Market prices for securities change daily as a result of many factors, including developments affecting the condition of both individual companies and the market in general.  The price of a security may even be affected by factors unrelated to the value or condition of its issuer, including changes in interest rates, economic and political conditions, and general market conditions.  The Fund’s performance per Share will change daily in response to such factors.
Obra Opportunistic Structured Products ETF | New Advisor Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
New Advisor Risk. The Advisor has only recently begun serving as an investment advisor to ETFs. As a result, investors do not have a long-term track record of managing an ETF from which to judge the Advisor, and the Advisor may not achieve the intended result in managing the Fund and may have limited resources.
Obra Opportunistic Structured Products ETF | Limited History of Operations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Limited History of Operations Risk. The Fund has a limited history of operations. Accordingly, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such a liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.
Obra Opportunistic Structured Products ETF | ETF Structure Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
ETF Structure Risks.  The Fund is structured as an ETF and as a result is subject to the special risks, including:

o
Not Individually Redeemable.  Shares are not individually redeemable and may be redeemed by the Fund at NAV only in large blocks known as “Creation Units.”  You may incur brokerage costs purchasing enough Shares to constitute a Creation Unit.

o
Trading Issues.  An active trading market for the Shares may not be developed or maintained. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable, such as extraordinary market volatility.  There can be no assurance that Shares will continue to meet the listing requirements of the Exchange.  If the Shares are traded outside a collateralized settlement system, the number of financial institutions that can act as authorized participants that can post collateral on an agency basis is limited, which may limit the market for the Shares.

o
Cash purchases. Although the Fund does not anticipate large cash purchases or redemptions, to the extent Creation Units are purchased by APs in cash instead of in-kind, the Fund will incur certain costs such as brokerage expenses and taxable gains and losses. These costs could be imposed on the Fund and impact the Fund’s NAV if not fully offset by transaction fees paid by the APs.

o
Market Price Variance Risk.  The market prices of Shares will fluctuate in response to changes in NAV and supply and demand for Shares and will include a “bid-ask spread” charged by the exchange specialists, market makers or other participants that trade the particular security.  There may be times when the market price and the NAV vary significantly.  This means that Shares may trade at a discount to NAV.


In times of market stress, market makers may step away from their role market making in shares of ETFs and in executing trades, which can lead to differences between the market value of Shares and the Fund's NAV.

To the extent Authorized Participants exit the business or are unable to process creations or redemptions and no other Authorized Participant can step in to do so, there may be a significantly reduced trading market in the Shares, which can lead to differences between the market value of Shares and the Fund's NAV.


The market price for the Shares may deviate from the Fund's NAV, particularly during times of market stress, with the result that investors may pay significantly more or receive significantly less for Shares than the Fund's NAV, which is reflected in the bid and ask price for Shares or in the closing price.

When all or a portion of an ETFs underlying securities trade in a market that is closed when the market for the Shares is open, there may be changes from the last quote of the closed market and the quote from the Fund's domestic trading day, which could lead to differences between the market value of the Shares and the Fund's NAV.

In stressed market conditions, the market for the Shares may become less liquid in response to the deteriorating liquidity of the Fund's portfolio.  This adverse effect on the liquidity of the Shares may, in turn, lead to differences between the market value of the Shares and the Fund's NAV.

Obra Opportunistic Structured Products ETF | Cybersecurity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cybersecurity Risk. As part of its business, the Advisor processes, stores, and transmits large amounts of electronic information, including information relating to the transactions of the Fund. The Advisor and the Fund are therefore susceptible to cybersecurity risk. Cybersecurity failures or breaches of the Fund or its service providers have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties and/or reputational damage. The Fund and its shareholders could be negatively impacted as a result.
Obra Opportunistic Structured Products ETF | Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Investment Risk. Various sectors of the global financial markets have been experiencing an extended period of adverse conditions. Market uncertainty has increased dramatically, particularly in the United States and Europe, and adverse market conditions have expanded to other markets. These conditions have resulted in disruption of markets, periods of reduced liquidity, greater volatility, general volatility of spreads, an acute contraction in the availability of credit and a lack of price transparency. The long-term impact of these events is uncertain but could continue to have a material effect on general economic conditions, consumer and business confidence and market liquidity.
Economic problems in a single country are increasingly affecting other markets and economies, and a continuation of this trend could adversely affect global economic conditions and world markets. Uncertainty and volatility in the financial markets and political systems of the U.S. or any other country, may have adverse spill-over effects into the global financial markets generally.
Obra Opportunistic Structured Products ETF | Early Close/Trading Halt Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Early Close/Trading Halt Risk. An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may prevent the Fund from buying or selling certain securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and may incur substantial trading losses.
Obra High Grade Structured Products ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The loss of your money is a principal risk of investing in the Fund.
Obra High Grade Structured Products ETF | Structured Products Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Structured Products Risk. The Fund will primarily invest in structured products. The structured products may include investments in securitizations and other asset-backed securities. Among other risks, the products (i) are subject to the risks associated with the underlying assets; (ii) will often be leveraged, which will generally magnify the opportunities for gain and risk of loss; (iii) are highly complex, which may cause disputes as to their terms and impact the valuation and liquidity of such positions; and (iv) often contain significant obstacles to asserting “putback” or similar claims against the products.
Obra High Grade Structured Products ETF | Mortgage- and Asset-Backed Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Mortgage- and Asset-Backed Securities Risk. In addition to other risks commonly associated with investing in debt securities, MBS are subject to “prepayment risk” and “extension risk.” Prepayment risk is the risk that, when interest rates fall, certain types of obligations will be paid off by the obligor more quickly than originally anticipated, and the Fund may have to invest the proceeds in securities with lower yields. MBS are priced with an expectation of some anticipated level of prepayment of principal. Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the obligor more slowly than anticipated causing the value of these securities to fall. MBS are also subject to the risk of default on the underlying mortgages, particularly during periods of economic downturn. Reduced investor demand for mortgage loans and mortgage- related securities may adversely affect the liquidity and market value of MBS. The risks associated with investing in ABS are similar to those associated with investing in MBS. ABS also entail certain risks not presented by MBS, including the risk that in certain states it may be difficult to perfect the liens securing the collateral backing certain ABS. In addition, certain ABS are based on loans that are unsecured, which means that there is no collateral to seize if the underlying borrower defaults.
Obra High Grade Structured Products ETF | Covenant-Lite Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Covenant-Lite Risk. Some of the below investment grade loans or debt obligations in which the Fund may invest or get exposure to may be “covenant-lite”, which means the loans or obligations contain fewer financial maintenance covenants than other loans or obligations (in some cases, none) and do not include terms which allow the lender to monitor the borrower’s performance and declare a default if certain criteria are breached. An investment by the Fund in a covenant-lite loan may potentially hinder the ability to reprice credit risk associated with the issuer and reduce the ability to restructure a problematic loan and mitigate potential loss. The Fund may also experience difficulty, expenses or delays in enforcing its rights on its holdings of covenant-lite loans or obligations. As a result of these risks, the Fund’s exposure to losses may be increased, which could result in an adverse impact on the Fund’s net income and NAV.
Obra High Grade Structured Products ETF | Credit/Default Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Credit/Default Risk. Credit risk is the risk that issuers or guarantors of debt instruments or the counterparty to a derivatives contract, repurchase agreement, or loan of portfolio securities is unable or unwilling to make timely interest and/or principal payments or otherwise honor its obligations. Changes in the financial condition of an issuer or counterparty, changes in specific economic, social or political conditions that affect a particular type of security or other instrument or an issuer, and changes in economic, social, or political conditions generally can increase the risk of default by an issuer or counterparty, which can affect a security’s or other instrument’s credit quality or value and an issuer’s or counterparty’s ability to pay interest and principal when due. Debt instruments are subject to varying degrees of credit risk, which may be reflected in credit ratings. Securities issued by the U.S. government have limited credit risk. Credit rating downgrades and defaults (failure to make interest or principal payment) may potentially reduce the Fund’s income and Share price.
Obra High Grade Structured Products ETF | Authorized Participant Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Authorized Participant Risk: Only an authorized participant (“Authorized Participant” or “AP”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants).
Obra High Grade Structured Products ETF | Small-Cap and Mid-Cap Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Small-Cap and Mid-Cap Securities Risk. The Fund may invest in securities of small-cap and mid-cap companies, which involve greater volatility than investing in larger and more established companies. Small-cap and mid-cap companies can be subject to more abrupt or erratic share price changes than larger, more established companies. Securities of these types of companies have limited market liquidity, and their prices may be more volatile.  You should expect that the value of the Shares will be more volatile than a fund that invests exclusively in large-capitalization companies.
Obra High Grade Structured Products ETF | Cash and Cash Equivalents Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cash and Cash Equivalents Risk. At any time, the Fund may have investments in cash or cash equivalents. When a portion of a portfolio is held in cash or cash equivalents, there is the risk that the value of the cash account, including interest, will not keep pace with inflation, thus reducing purchasing power over time.
Obra High Grade Structured Products ETF | U.S. Government Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
U.S. Government Securities Risk. U.S. government securities risk refers to the risk that debt securities issued or guaranteed by certain U.S. Government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. Government, and so investments in their securities or obligations issued by them involve credit risk greater than investments in other types of U.S. Government securities.
Obra High Grade Structured Products ETF | Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Derivatives Risk. Structured products may be linked to derivatives. Derivatives involve special risks and costs and may result in losses to the Fund. The successful use of derivatives requires sophisticated management, and, to the extent that derivatives are used, the Fund will depend on the Advisor’s ability to analyze and manage derivatives transactions. The prices of derivatives may move in unexpected ways, especially in abnormal market conditions. Some derivatives are “leveraged” or may create economic leverage for the Fund and, therefore, may magnify or otherwise increase investment losses to the Fund. The Fund’s use of derivatives may also increase the amount of taxes payable by shareholders.
Other risks arise from the potential inability to terminate or sell derivatives positions. A liquid secondary market may not always exist for the Fund’s derivatives positions. In fact, many over-the-counter derivative instruments will not have liquidity beyond the counterparty to the instrument. Over-the-counter derivative instruments also involve the risk that the other party will not meet its obligations to the Fund. The use of derivatives also exposes the Fund to operational issues, such as documentation and settlement issues, systems failures, inadequate control and human error.
Derivatives may also involve legal risks, such as insufficient documentation, the lack of capacity or authority of a counterparty to execute or settle a transaction, and the legality and enforceability of derivatives contracts. The U.S. Government and foreign governments have adopted (and may adopt further) regulations governing derivatives markets, including mandatory clearing of certain derivatives, margin and reporting requirements and risk exposure limitations. Regulation of derivatives may make derivatives more costly, limit their availability or utility to the Fund, or otherwise adversely affect their performance or disrupt markets.
Obra High Grade Structured Products ETF | Inflation-Indexed Bond Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation-Indexed Bond Risk. Inflation-indexed bonds may change in value in response to actual or anticipated changes in inflation rates in a manner unanticipated by the Fund’s portfolio management team or investors generally. Inflation-indexed bonds are subject to debt securities risks.
Obra High Grade Structured Products ETF | Leverage Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Leverage RiskThe use of leverage may exaggerate changes in the Share price and the return on its investments.  Accordingly, the Fund may be more volatile and all other risks, including the risk of loss of an investment, tend to be compounded or magnified.  Borrowing also leads to additional interest expense and other fees that increase the Fund’s expenses.
Obra High Grade Structured Products ETF | Transition from LIBOR Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Transition from LIBOR Risk. Although the London Interbank Offered Rate (“LIBOR”) is no longer published as of June 30, 2023, holding of certain of the Fund’s underlying investments may still include a LIBOR reference rate. The elimination of LIBOR and transition to other reference rates, or any other changes or reforms to the determination or supervision of reference rates, could have an adverse impact on the market for, or value of, any securities or payments linked to those reference rates, which may adversely affect Fund performance and/or NAV. Uncertainty and risk still remain regarding the willingness and ability of issuers and lenders to include revised provisions in new and existing contracts or instruments. Consequently, the transition away from LIBOR to other reference rates may still lead to increased volatility and illiquidity in markets that have historically been tied to LIBOR, fluctuations in values of LIBOR-related investments or investments in issuers that utilize LIBOR, increased difficulty in borrowing or refinancing and diminished effectiveness of hedging strategies, potentially adversely affecting Fund performance. Furthermore, the risks associated with the discontinuation of LIBOR and transition to alternative rates may be exacerbated if the work necessary to effect an orderly transition to an alternative reference rate is not completed in a timely manner. The ultimate impact of the discontinuance of LIBOR on the Fund remains uncertain and may result in losses to the Fund. The U.S. Federal Reserve, based on the recommendations of the New York Federal Reserve’s Alternative Reference Rate Committee (comprised of major derivative market participants and their regulators), has begun publishing the Secured Overnight Financing Rate (referred to as “SOFR”), which is their preferred alternative rate for U.S. dollar LIBOR. Proposals for alternative reference rates for other currencies have also been announced or have already begun publication. Markets are in the process of developing in response to these new rates. Although financial regulators and industry working groups have suggested alternative reference rates, such as the European Interbank Offer Rate, the Sterling Overnight Interbank Average Rate and SOFR, there has been no global consensus as to an alternative rate and the process for amending existing contracts or instruments to transition away from LIBOR remains incomplete.
Obra High Grade Structured Products ETF | Liquidity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Liquidity Risk. Liquidity risk exists when particular investments would be difficult to purchase or sell, possibly preventing the Fund from selling such illiquid securities at an advantageous time or price, or possibly requiring the Fund to dispose of other investments at unfavorable times or prices in order to satisfy its obligations.
Obra High Grade Structured Products ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation Risk.  Fixed income securities are subject to inflation risk.  Because inflation reduces the purchasing power of income produced by existing fixed income securities, the prices at which fixed income securities trade will be reduced to compensate for the fact that the income they produce is worth less.  This potential decrease in market value of fixed income securities would result in a loss in the value of the Fund’s portfolio.
Obra High Grade Structured Products ETF | Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Interest Rate Risk. As interest rates rise, the value of fixed income securities held by the Fund are likely to decrease. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. Interest rates in the United States are near historic lows, which may increase the Fund’s exposure to risks associated with rising rates. A wide variety of market factors can cause interest rates to rise, including central bank monetary policy (including the Federal Reserve ending its “quantitative easing” policy of purchasing large quantities of securities issued or guaranteed by the U.S. government), rising inflation, and changes in general economic conditions. Interest rate changes can be sudden and unpredictable. Moreover, rising interest rates may lead to decreased liquidity in the bond markets, making it more difficult for the Fund to value or sell some or all of its bond investments at any given time.
Changes in interest rates may also affect the Share price; for example, a sharp rise in interest rates could cause the Share price to fall. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. Duration is an estimate of a security’s sensitivity to changes in prevailing interest rates that is based on certain factors that may prove to be incorrect. It is therefore not an exact measurement and may not be able to reliably predict a particular security’s price sensitivity to changes in interest rates.
Obra High Grade Structured Products ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s portfolio securities, the Advisor will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.
Obra High Grade Structured Products ETF | Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Market Risk.  Market risk refers to the possibility that the value of securities held by the Fund may decline due to daily fluctuations in the market.  Market prices for securities change daily as a result of many factors, including developments affecting the condition of both individual companies and the market in general.  The price of a security may even be affected by factors unrelated to the value or condition of its issuer, including changes in interest rates, economic and political conditions, and general market conditions.  The Fund’s performance per Share will change daily in response to such factors.
Obra High Grade Structured Products ETF | New Advisor Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
New Advisor Risk. The Advisor has only recently begun serving as an investment advisor to ETFs. As a result, investors do not have a long-term track record of managing an ETF from which to judge the Advisor, and the Advisor may not achieve the intended result in managing the Fund and may have limited resources.
Obra High Grade Structured Products ETF | Limited History of Operations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Limited History of Operations Risk. The Fund has a limited history of operations. Accordingly, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such a liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.
Obra High Grade Structured Products ETF | ETF Structure Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
ETF Structure Risks.  The Fund is structured as an ETF and as a result is subject to the special risks, including:

o
Not Individually Redeemable.  Shares are not individually redeemable and may be redeemed by the Fund at NAV only in large blocks known as “Creation Units.”  You may incur brokerage costs purchasing enough Shares to constitute a Creation Unit.

o
Trading Issues.  An active trading market for the Shares may not be developed or maintained. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable, such as extraordinary market volatility.  There can be no assurance that Shares will continue to meet the listing requirements of the Exchange.  If the Shares are traded outside a collateralized settlement system, the number of financial institutions that can act as authorized participants that can post collateral on an agency basis is limited, which may limit the market for the Shares.

o
Cash purchases. Although the Fund does not anticipate large cash purchases or redemptions, to the extent Creation Units are purchased by APs in cash instead of in-kind, the Fund will incur certain costs such as brokerage expenses and taxable gains and losses. These costs could be imposed on the Fund and impact the Fund’s NAV if not fully offset by transaction fees paid by the APs.

o
Market Price Variance Risk.  The market prices of Shares will fluctuate in response to changes in NAV and supply and demand for Shares and will include a “bid-ask spread” charged by the exchange specialists, market makers or other participants that trade the particular security.  There may be times when the market price and the NAV vary significantly.  This means that Shares may trade at a discount to NAV.


In times of market stress, market makers may step away from their role market making in shares of ETFs and in executing trades, which can lead to differences between the market value of Shares and the Fund’s NAV.

To the extent Authorized Participants exit the business or are unable to process creations or redemptions and no other Authorized Participant can step in to do so, there may be a significantly reduced trading market in the Shares, which can lead to differences between the market value of Shares and the Fund’s NAV.

The market price for the Shares may deviate from the Fund’s NAV, particularly during times of market stress, with the result that investors may pay significantly more or receive significantly less for Shares than the Fund’s NAV, which is reflected in the bid and ask price for Shares or in the closing price.

When all or a portion of an ETFs underlying securities trade in a market that is closed when the market for the Shares is open, there may be changes from the last quote of the closed market and the quote from the Fund’s domestic trading day, which could lead to differences between the market value of the Shares and the Fund’s NAV.

In stressed market conditions, the market for the Shares may become less liquid in response to the deteriorating liquidity of the Fund’s portfolio.  This adverse effect on the liquidity of the Shares may, in turn, lead to differences between the market value of the Shares and the Fund’s NAV.
Obra High Grade Structured Products ETF | Cybersecurity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cybersecurity Risk. As part of its business, the Advisor processes, stores, and transmits large amounts of electronic information, including information relating to the transactions of the Fund. The Advisor and the Fund are therefore susceptible to cybersecurity risk. Cybersecurity failures or breaches of the Fund or its service providers have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties and/or reputational damage. The Fund and its shareholders could be negatively impacted as a result.
Obra High Grade Structured Products ETF | Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Investment Risk. Various sectors of the global financial markets have been experiencing an extended period of adverse conditions. Market uncertainty has increased dramatically, particularly in the United States and Europe, and adverse market conditions have expanded to other markets. These conditions have resulted in disruption of markets, periods of reduced liquidity, greater volatility, general volatility of spreads, an acute contraction in the availability of credit and a lack of price transparency. The long-term impact of these events is uncertain but could continue to have a material effect on general economic conditions, consumer and business confidence and market liquidity.
Economic problems in a single country are increasingly affecting other markets and economies, and a continuation of this trend could adversely affect global economic conditions and world markets. Uncertainty and volatility in the financial markets and political systems of the U.S. or any other country, may have adverse spill-over effects into the global financial markets generally.
Obra High Grade Structured Products ETF | Early Close/Trading Halt Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Early Close/Trading Halt Risk. An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may prevent the Fund from buying or selling certain securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and may incur substantial trading losses.
Obra Defensive High Yield ETF | Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] The loss of your money is a principal risk of investing in the Fund.
Obra Defensive High Yield ETF | Below Investment Grade Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Below Investment Grade Securities Risk. The Fund may invest in securities that are rated below investment grade, which are also referred to as “junk”.  Securities in this rating category are speculative and are usually issued by companies without long track records of sales and earnings, or by those companies with questionable credit strength.  Credit risk is greater for securities rated below investment grade than for investment grade securities, which is the risk that issuers will not make payments on securities held by the Fund, resulting in losses to the Fund. Changes in economic conditions or other circumstances may have a greater effect on the ability of issuers of these securities to make principal and interest payments than they do on issuers of higher-grade securities. The retail secondary market for below investment grade securities may be less liquid than that of higher-rated securities and adverse conditions could make it difficult at times to sell certain securities or could result in lower prices.
Obra Defensive High Yield ETF | Credit/Default Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Credit/Default Risk. Credit risk is the risk that issuers or guarantors of debt instruments or the counterparty to a derivatives contract, repurchase agreement, or loan of portfolio securities is unable or unwilling to make timely interest and/or principal payments or otherwise honor its obligations. Changes in the financial condition of an issuer or counterparty, changes in specific economic, social or political conditions that affect a particular type of security or other instrument or an issuer, and changes in economic, social, or political conditions generally can increase the risk of default by an issuer or counterparty, which can affect a security’s or other instrument’s credit quality or value and an issuer’s or counterparty’s ability to pay interest and principal when due. Debt instruments are subject to varying degrees of credit risk, which may be reflected in credit ratings. Securities issued by the U.S. government have limited credit risk. Credit rating downgrades and defaults (failure to make interest or principal payment) may potentially reduce the Fund’s income and Share price.
Obra Defensive High Yield ETF | Authorized Participant Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Authorized Participant Risk: Only an authorized participant (“Authorized Participant” or “AP”) may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants).
Obra Defensive High Yield ETF | Cash and Cash Equivalents Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cash and Cash Equivalents Risk. At any time, the Fund may have investments in cash or cash equivalents. When a portion of a portfolio is held in cash or cash equivalents, there is the risk that the value of the cash account, including interest, will not keep pace with inflation, thus reducing purchasing power over time.
Obra Defensive High Yield ETF | U.S. Government Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
U.S. Government Securities Risk. U.S. government securities risk refers to the risk that debt securities issued or guaranteed by certain U.S. Government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. Government, and so investments in their securities or obligations issued by them involve credit risk greater than investments in other types of U.S. Government securities.
Obra Defensive High Yield ETF | Inflation-Indexed Bond Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation-Indexed Bond Risk. Inflation-indexed bonds may change in value in response to actual or anticipated changes in inflation rates in a manner unanticipated by the Fund’s portfolio management team or investors generally. Inflation-indexed bonds are subject to debt securities risks.
Obra Defensive High Yield ETF | Inflation Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Inflation Risk.  Fixed income securities are subject to inflation risk.  Because inflation reduces the purchasing power of income produced by existing fixed income securities, the prices at which fixed income securities trade will be reduced to compensate for the fact that the income they produce is worth less.  This potential decrease in market value of fixed income securities would result in a loss in the value of the Fund’s portfolio.
Obra Defensive High Yield ETF | Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Interest Rate Risk. As interest rates rise, the value of fixed income securities held by the Fund are likely to decrease. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. A wide variety of market factors can cause interest rates to rise, including central bank monetary policy, rising inflation, and changes in general economic conditions. Interest rate changes can be sudden and unpredictable. Moreover, rising interest rates may lead to decreased liquidity in the bond markets, making it more difficult for the Fund to value or sell some or all of its bond investments at any given time.
Changes in interest rates may also affect the Share price; for example, a sharp rise in interest rates could cause the Share price to fall. Securities with longer durations tend to be more sensitive to interest rate changes, making them more volatile than securities with shorter durations. Duration is an estimate of a security’s sensitivity to changes in prevailing interest rates that is based on certain factors that may prove to be incorrect. It is therefore not an exact measurement and may not be able to reliably predict a particular security’s price sensitivity to changes in interest rates.
Obra Defensive High Yield ETF | Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Management Risk. The Fund is subject to management risk because it is an actively managed portfolio. In managing the Fund’s portfolio securities, the Advisor will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.
Obra Defensive High Yield ETF | Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Market Risk.  Market risk refers to the possibility that the value of securities held by the Fund may decline due to daily fluctuations in the market.  Market prices for securities change daily as a result of many factors, including developments affecting the condition of both individual companies and the market in general.  The price of a security may even be affected by factors unrelated to the value or condition of its issuer, including changes in interest rates, economic and political conditions, and general market conditions.  The Fund’s performance per Share will change daily in response to such factors.
Obra Defensive High Yield ETF | New Advisor Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
New Advisor Risk. The Advisor has only recently begun serving as an investment advisor to ETFs. As a result, investors do not have a long-term track record of managing an ETF from which to judge the Advisor, and the Advisor may not achieve the intended result in managing the Fund and may have limited resources.
Obra Defensive High Yield ETF | Limited History of Operations Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Limited History of Operations Risk. The Fund has a limited history of operations. Accordingly, investors in the Fund bear the risk that the Fund may not be successful in implementing its investment strategy, may not employ a successful investment strategy, or may fail to attract sufficient assets under management to realize economies of scale, any of which could result in the Fund being liquidated at any time without shareholder approval and at a time that may not be favorable for all shareholders. Such a liquidation could have negative tax consequences for shareholders and will cause shareholders to incur expenses of liquidation.
Obra Defensive High Yield ETF | ETF Structure Risks [Member]  
Prospectus [Line Items]  
Risk [Text Block]
ETF Structure Risks.  The Fund is structured as an ETF and as a result is subject to the special risks, including:

o
Not Individually Redeemable.  Shares are not individually redeemable and may be redeemed by the Fund at NAV only in large blocks known as “Creation Units.”  You may incur brokerage costs purchasing enough Shares to constitute a Creation Unit.

o
Trading Issues.  An active trading market for the Shares may not be developed or maintained. Trading in Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable, such as extraordinary market volatility.  There can be no assurance that Shares will continue to meet the listing requirements of the Exchange.  If the Shares are traded outside a collateralized settlement system, the number of financial institutions that can act as authorized participants that can post collateral on an agency basis is limited, which may limit the market for the Shares.

o
Cash purchases. Although the Fund does not anticipate large cash purchases or redemptions, to the extent Creation Units are purchased by APs in cash instead of in-kind, the Fund will incur certain costs such as brokerage expenses and taxable gains and losses. These costs could be imposed on the Fund and impact the Fund’s NAV if not fully offset by transaction fees paid by the APs.

o
Market Price Variance Risk.  The market prices of Shares will fluctuate in response to changes in NAV and supply and demand for Shares and will include a “bid-ask spread” charged by the exchange specialists, market makers or other participants that trade the particular security.  There may be times when the market price and the NAV vary significantly.  This means that Shares may trade at a discount to NAV.


In times of market stress, market makers may step away from their role market making in shares of ETFs and in executing trades, which can lead to differences between the market value of Shares and the Fund's NAV.

To the extent Authorized Participants exit the business or are unable to process creations or redemptions and no other Authorized Participant can step in to do so, there may be a significantly reduced trading market in the Shares, which can lead to differences between the market value of Shares and the Fund's NAV.

The market price for the Shares may deviate from the Fund's NAV, particularly during times of market stress, with the result that investors may pay significantly more or receive significantly less for Shares than the Fund's NAV, which is reflected in the bid and ask price for Shares or in the closing price.

When all or a portion of an ETFs underlying securities trade in a market that is closed when the market for the Shares is open, there may be changes from the last quote of the closed market and the quote from the Fund's domestic trading day, which could lead to differences between the market value of the Shares and the Fund's NAV.

In stressed market conditions, the market for the Shares may become less liquid in response to the deteriorating liquidity of the Fund's portfolio.  This adverse effect on the liquidity of the Shares may, in turn, lead to differences between the market value of the Shares and the Fund's NAV.
Obra Defensive High Yield ETF | Cybersecurity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Cybersecurity Risk. As part of its business, the Advisor processes, stores, and transmits large amounts of electronic information, including information relating to the transactions of the Fund. The Advisor and the Fund are therefore susceptible to cybersecurity risk. Cybersecurity failures or breaches of the Fund or its service providers have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties and/or reputational damage. The Fund and its shareholders could be negatively impacted as a result.
Obra Defensive High Yield ETF | Investment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Investment Risk. Various sectors of the global financial markets have been experiencing an extended period of adverse conditions. Market uncertainty has increased dramatically, particularly in the United States and Europe, and adverse market conditions have expanded to other markets. These conditions have resulted in disruption of markets, periods of reduced liquidity, greater volatility, general volatility of spreads, an acute contraction in the availability of credit and a lack of price transparency. The long-term impact of these events is uncertain but could continue to have a material effect on general economic conditions, consumer and business confidence and market liquidity.
Economic problems in a single country are increasingly affecting other markets and economies, and a continuation of this trend could adversely affect global economic conditions and world markets. Uncertainty and volatility in the financial markets and political systems of the U.S. or any other country, including volatility as a result of the ongoing conflicts between Russia and Ukraine and Israel and Hamas and the rapidly evolving measures in response, may have adverse spill-over effects into the global financial markets generally.
Obra Defensive High Yield ETF | Early Close/Trading Halt Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Early Close/Trading Halt Risk. An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may prevent the Fund from buying or selling certain securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and may incur substantial trading losses.
Obra Defensive High Yield ETF | Rating Agencies Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Rating Agencies Risk. Rating agencies may fail to make timely changes in credit ratings and an issuer’s current financial condition may be better or worse than a rating indicates. In addition, rating agencies are subject to an inherent conflict of interest because they are often compensated by the same issuers whose securities they grade.
Obra Defensive High Yield ETF | Corporate Debt Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Corporate Debt Securities Risk.  Corporate debt securities are fixed income securities issued by businesses.  Notes, bonds, debentures, and commercial paper are the most prevalent types of corporate debt securities.  The credit risks of corporate debt securities vary widely among issuers.  In addition, the credit risk of an issuer’s debt security may vary based on its priority for repayment, meaning that issuers might not make payments on subordinated securities while continuing to make payments on senior securities or, in the event of bankruptcy, holders of senior securities may receive amounts otherwise payable to the holders of subordinated securities.
Obra Defensive High Yield ETF | Fixed Income Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Fixed Income Risk. When the Fund invests in fixed income securities, the value of your investment in the Fund will fluctuate with changes in interest rates. Typically, a rise in interest rates causes a decline in the value of fixed income securities owned by the Fund. In general, the market price of fixed income securities with longer maturities will increase or decrease more in response to changes in interest rates than shorter-term securities. Other risk factors include credit risk (the debtor may default), extension risk (an issuer may exercise its right to repay principal on a fixed rate obligation held by the Fund later than expected), and prepayment risk (the debtor may pay its obligation early, reducing the amount of interest payments). These risks could affect the value of a particular investment by the Fund, possibly causing the Fund's share price and total return to be reduced and fluctuate more than other types of investments.
Obra Defensive High Yield ETF | Counterparty Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block]
Counterparty Credit Risk. The stability and liquidity of many transactions depends in large part on the creditworthiness of the parties to the transactions. If a counterparty to such a transaction defaults, exercising contractual rights may involve delays or costs for the Fund. Furthermore, there is a risk that a counterparty could become the subject of insolvency proceedings, and that the recovery of securities and other assets from such counterparty will be delayed or be of a value less than the value of the securities or assets originally entrusted to such counterparty.