S000021242 [Member] Investment Risks - NexPoint Event Driven Fund |
Jun. 30, 2026 |
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| Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk is the risk that stock prices will fall over short or long periods of time. In addition, common stocks represent a share of ownership in a company, and rank after bonds and preferred stock in their claim on the company’s assets in the event of bankruptcy. In addition to these risks, preferred stock and convertible securities are also subject to the risk that issuers will not make payments on securities held by the Fund, which could result in losses to the Fund. The credit quality of preferred stock and convertible securities held by the Fund may be lowered if an issuer’s financial condition changes, leading to greater volatility in the price of the security.
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| Special Purpose Acquisition Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Special Purpose Acquisition Companies Risk is the risk that the Fund may invest in stock of, warrants to purchase stock of, and other interests in special purpose acquisition companies or similar special purpose entities that pool funds to seek potential acquisition opportunities (collectively,“SPACs”). Because SPACs and similar entities have no operating history or ongoing business other than seeking acquisitions, the value of their securities is particularly dependent on the ability of the entity’s management to identify and complete a profitable acquisition. Some SPACs may pursue acquisitions only within certain industries or regions, which may increase the volatility of their prices. In addition, these securities, which are typically traded in the over‑the‑counter market, may be considered illiquid and/or may be subject to restrictions on resale. An investment in a SPAC is subject to a variety of risks, including that (i) a significant portion of the monies raised by the SPAC for the purpose of identifying and effecting an acquisition or merger may be expended during the search for a target transaction; (ii) an attractive acquisition or merger target may not be identified at all and the SPAC will be required to return any remaining monies to shareholders; (iii) any proposed merger or acquisition may be unable to obtain the requisite approval, if any, of SPAC shareholders; (iv) an acquisition or merger once effected may prove unsuccessful and an investment in the SPAC may lose value; (v) the warrants or other rights with respect to the SPAC held by the Fund may expire worthless or may be repurchased or retired by the SPAC at an unfavorable price; (vi) the Fund will be delayed in receiving any redemption or liquidation proceeds from a SPAC to which it is entitled; (vii) an investment in a SPAC may be diluted by additional later offerings of interests in the SPAC or by other investors exercising existing rights to purchase shares of the SPAC; (viii) no or only a thinly traded market for shares of or interests in a SPAC may develop, leaving the Fund unable to sell its interest in a SPAC or to sell its interest only at a price below what the Fund believes is the SPAC interest’s intrinsic value; and (ix) the values of investments in SPACs may be highly volatile and may depreciate significantly over time.
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| Senior Loans Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Senior Loans Risk. The Fund’s investments in senior loans are typically below investment grade and are considered speculative because of the credit risk of their issuers. As with any debt instrument, senior loans are generally subject to the risk of price declines and to increases in interest rates, particularly long-term rates. Senior loans are also subject to the risk that, as interest rates rise, the cost of borrowing increases, which may increase the risk of default. In addition, the interest rates of floating rate loans typically only adjust to changes in short-term interest rates; long-term interest rates can vary dramatically from short-term interest rates. Therefore, senior loans may not mitigate price declines in a rising long-term interest rate environment. The secondary market for loans is generally less liquid than the market for higher grade debt. Less liquidity in the secondary trading market could adversely affect the price at which the Fund could sell a loan, and could adversely affect the Fund’s income. The volume and frequency of secondary market trading in such loans varies significantly over time and among loans. Although senior loans in which the Fund will invest will often be secured by collateral, there can be no assurance that liquidation of such collateral would satisfy the borrower’s obligation in the event of a default or that such collateral could be readily liquidated.
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| Communication Services Sector Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Communication Services Sector Risk is the risk that the Fund’s performance depends in part on the overall condition of the communication services sector and is susceptible to economic, political and regulatory risks and other occurrences associated with that sector. Communication services companies, which may include telecommunications, media, entertainment, and interactive media and services companies, may be significantly affected by rapid technological change and product obsolescence, intense competition, changing consumer preferences and discretionary spending, cyclical advertising revenues, and extensive government regulation (including licensing, spectrum allocation, content, privacy and data security requirements). Many of these companies require substantial capital expenditures and carry high levels of debt. They may also be subject to industry consolidation, intellectual property and other litigation, and cybersecurity incidents.
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| Convertible Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Convertible Securities Risk is the risk that the market value of convertible securities may fluctuate due to changes in, among other things, interest rates; other economic conditions; industry fundamentals; market sentiment; the issuer’s operating results, financial statements, and credit ratings; and the market value of the underlying common or preferred stock.
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| Counterparty Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Counterparty Risk is the risk that a counterparty (the other party to a transaction or an agreement or the party with whom the Fund executes transactions) to a transaction with the Fund may be unable or unwilling to make timely principal, interest or settlement payments, or otherwise honor its obligations.
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| Credit Risks [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Credit Risk is the risk that the issuers of certain securities or the counterparties of a derivatives contract or repurchase contract might be unable or unwilling (or perceived as being unable or unwilling) to make interest and/or principal payments when due, or to otherwise honor its obligations. Debt securities are subject to the risk of non‑payment of scheduled interest and/or principal. Non‑payment would result in a reduction of income to the Fund, a reduction in the value of the obligation experiencing non‑payment and a potential decrease in the net asset value (“NAV”) of the Fund.
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| Currency Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Currency Risk is the risk that fluctuations in exchange rates will adversely affect the value of the Fund’s foreign currency holdings and investments denominated in foreign currencies.
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| Debt Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Debt Securities Risk is the risk associated with the fact that the value of debt securities typically changes in response to various factors, including, by way of example, market-related factors (such as changes in interest rates or changes in the risk appetite of investors generally) and changes in the actual or perceived ability of the issuer (or of issuers generally) to meet its (or their) obligations. During periods of rising interest rates, debt securities generally decline in value. Conversely, during periods of falling interest rates, debt securities generally rise in value. This kind of market risk is generally greater for funds investing in debt securities with longer maturities.
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| Derivatives Risks [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Derivatives Risk is a combination of several risks, including the risks that: (1) an investment in a derivative instrument may not correlate well with the performance of the securities or asset class to which the Fund seeks exposure, (2) derivative contracts, including options, may expire worthless and the use of derivatives may result in losses to the Fund, (3) a derivative instrument entailing leverage may result in a loss greater than the principal amount invested, (4) derivatives not traded on an exchange may be subject to credit risk, for example, if the counterparty does not meet its obligations (see also “Counterparty Risk”), and (5) derivatives not traded on an exchange may be subject to liquidity risk and the related risk that the instrument is difficult or impossible to value accurately. In addition, changes in laws or regulations may make the use of derivatives more costly, may limit the availability of derivatives, or may otherwise adversely affect the use, value or performance of derivatives. The Fund’s ability to pursue its investment strategy, including its strategy of investing in certain derivative instruments, may be limited to or adversely affected by the Fund’s intention to qualify as a regulated investment company, and its strategy may bear adversely on its ability to so qualify.
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| Distressed and Defaulted Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Distressed and Defaulted Securities Risk: The Fund may invest in the securities of financially distressed and bankrupt issuers, including debt obligations that are in covenant or payment default. Such investments generally trade significantly below par and are considered speculative. The repayment of defaulted obligations is subject to significant uncertainties. Defaulted obligations might be repaid only after lengthy workout or bankruptcy proceedings, during which the issuer might not make any interest or other payments. Typically such workout or bankruptcy proceedings result in only partial recovery of cash payments or an exchange of the defaulted obligation for other debt or equity securities of the issuer or its affiliates, which may in turn be illiquid or speculative.
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| Exchange Traded Funds ETF Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Exchange-Traded Funds (“ETF”) Risk is the risk that the price movement of an ETF may not exactly track the underlying index and may result in a loss. In addition, shareholders bear both their proportionate share of the Fund’s expenses and indirectly bear similar expenses of the underlying investment company when the Fund invests in shares of another investment company.
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| Fixed Income Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Fixed Income Market Risk is the risk that fixed income markets may, in response to governmental intervention, economic or market developments (including potentially a reduction in the number of broker-dealers willing to engage in market-making activity), or other factors, experience periods of increased volatility and reduced liquidity. During those periods, the Fund may experience increased levels of shareholder redemptions, and may have to sell securities at times when it would otherwise not do so, and at unfavorable prices. Fixed income securities may be difficult to value during such periods.
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| Hedging Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Hedging Risk is the risk that, although intended to limit or reduce investment risk, hedging strategies may also limit or reduce the potential for profit. There is no assurance that hedging strategies will be successful.
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| High Yield Debt Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | High Yield Debt Securities Risk is the risk that below investment grade securities or unrated securities of similar credit quality (commonly known as “high yield securities” or “junk securities”) are more likely to default than higher rated securities. The Fund’s ability to invest in high-yield debt securities generally subjects the Fund to greater risk than securities with higher ratings. Such securities are regarded by the rating organizations as predominantly speculative with respect to capacity to pay interest and repay principal in accordance with the terms of the obligation. The market value of these securities is generally more sensitive to corporate developments and economic conditions and can be volatile. Market conditions can diminish liquidity and make accurate valuations difficult to obtain.
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| Illiquid and Restricted Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Illiquid and Restricted Securities Risk is the risk that the Adviser may not be able to sell illiquid or restricted securities, such as securities issued pursuant to Rule 144A of the Securities Act of 1933, at the price it would like or may have to sell them at a loss. Securities of non‑U.S. issuers, and emerging or developing markets securities in particular, are subject to greater liquidity risk.
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| Industrials Sector Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Industrials Sector Risk is the risk that the Fund’s performance depends in part on the overall condition of the industrials sector and is susceptible to economic, political and regulatory risks and other occurrences associated with that sector. Industrials companies, which may include aerospace and defense, construction and engineering, machinery, electrical equipment, commercial services and transportation companies, may be significantly affected by general economic cycles, supply chain disruptions, fluctuations in commodity and input costs, labor costs, interest rates, tariffs and trade policy, changes in government spending, and environmental and other regulation and liability. They may also be affected by product liability claims and technological change.
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| Industry Focus Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Industry Focus Risk is the risk that the Fund may be particularly susceptible to economic, political or regulatory events affecting those industries in which the Fund focuses its investments. Because the Fund currently focuses its investments in the communication services and industrials sectors, the Fund’s performance largely depends on the overall condition of these sectors and the Fund is susceptible to economic, political and regulatory risks or other occurrences associated with these sectors.
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| Interest Rate Risks [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Interest Rate Risk is the risk that fixed income securities will decline in value because of changes in interest rates. When interest rates decline, the value of fixed rate securities already held by the Fund can be expected to rise. Conversely, when interest rates rise, the value of existing fixed rate portfolio securities can be expected to decline. A fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration.
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| Leverage Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Leverage Risk. The Fund may use leverage in its investment program, including the use of borrowed funds and investments in certain types of options, such as puts, calls and warrants, which may be purchased for a fraction of the price of the underlying securities. While such strategies and techniques increase the opportunity to achieve higher returns on the amounts invested, they also increase the risk of loss. To the extent the Fund purchases securities with borrowed funds, its net assets will tend to increase or decrease at a greater rate than if borrowed funds are not used. If the interest expense on borrowings were to exceed the net return on the portfolio securities purchased with borrowed funds, the Fund’s use of leverage would result in a lower rate of return than if the Fund was not leveraged.
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| Liquidity Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Liquidity Risk is the risk that low trading volume, lack of a market maker, large position size, or legal restrictions (including daily price fluctuation limits or “circuit breakers”) limits or prevents the Fund from selling particular securities or unwinding derivative positions at desirable prices. At times, a major portion of any portfolio security may be held by relatively few institutional purchasers. Even if the Fund considers such securities liquid because of the availability of an institutional market, such securities may become difficult to value or sell in adverse market or economic conditions.
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| Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk is the risk associated with the fact that the Fund relies on the Adviser’s ability to achieve its investment objective. The Adviser may be incorrect in its assessment of the intrinsic value of the companies whose securities the Fund holds, which may result in a decline in the value of Fund shares and failure to achieve its investment objective. The Fund’s portfolio managers use qualitative analyses and/or models. Any imperfections or limitations in such analyses and models could affect the ability of the portfolio managers to implement strategies.
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| Mid Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Mid‑Cap Company Risk is the risk that investing in securities of mid‑cap companies may entail greater risks than investments in larger, more established companies. Mid‑cap companies tend to have more narrow product lines, more limited financial resources and a more limited trading market for their stocks, as compared with larger companies. As a result, their stock prices may decline significantly as market conditions change.
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| MLP Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | MLP Risk is the risk of investing in MLP units, which involves some risks that differ from an investment in the equity securities of a company. The Fund may invest in MLP units. Holders of MLP units have limited control and voting rights on matters affecting the partnership. Holders of units issued by an MLP are exposed to a remote possibility of liability for all of the obligations of that MLP in certain instances. Holders of MLP units are also exposed to the risk that they will be required to repay amounts to the MLP that are wrongfully distributed to them. Additionally, a sustained reduced demand for crude oil, natural gas and refined petroleum products could adversely affect MLP revenues and cash flows and changes in the regulatory environment could adversely affect the profitability of MLPs. Investments in MLP units also present special tax risks. See “MLP Tax Risk” below.
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| MLP Tax Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | MLP Tax Risk is the risk that the MLPs in which the Fund invests will fail to be treated as partnerships for U.S. federal income tax purposes. If an MLP does not meet current legal requirements to maintain its partnership status, or if it is unable to do so because of tax or other law changes, it would be treated as a corporation for U.S. federal income tax purposes. In that case, the MLP would be obligated to pay U.S. federal income tax (as well as state and local taxes) at the entity level on its taxable income and distributions received by the Fund would be characterized as dividend income to the extent of the MLP’s current and accumulated earnings and profits for federal tax purposes. The classification of an MLP as a corporation for U.S. federal income tax purposes could have the effect of reducing the amount of cash available for distribution by the MLP and the value of the Fund’s investment in any such MLP. As a result, the value of the Fund’s shares and the cash available for distribution to Fund shareholders could be reduced.
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| Operational and Technology Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Operational and Technology Risk is the risk that cyber-attacks, disruptions, or failures that affect the Fund’s service providers, counterparties, market participants, or issuers of securities held by the Fund may adversely affect the Fund and its shareholders, including by causing losses for the Fund or impairing Fund operations.
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| Options Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Options Risk is the risk associated with investments in options. Options, such as covered calls and covered puts, are subject to the risk that significant differences between the securities and options markets could result in an imperfect correlation between these markets.
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| Other Investment Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Other Investment Companies Risk is the risk that when the Fund invests a portion of its assets in investment companies, including open‑end funds, closed‑end funds, ETFs and other types of investment companies, those assets will be subject to the risks of the purchased investment companies’ portfolio securities, and a shareholder in the Fund will bear not only his or her proportionate share of the Fund’s expenses, but also indirectly the expenses of the purchased investment companies. Risks associated with investments in closed‑end funds also generally include market risk, leverage risk, risk of market price discount from NAV, risk of anti-takeover provisions and non‑diversification.
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| Portfolio Turnover Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Portfolio Turnover Risk is the risk that the Fund’s high portfolio turnover will increase the Fund’s transaction costs and may result in increased realization of net short-term capital gains (which are taxable to shareholders as ordinary income when distributed to them), higher taxable distributions and lower after‑tax performance. During the last two fiscal years, the Fund experienced a high portfolio turnover rate.
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| Prepayment Risks [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Prepayment Risk is the risk that during periods of falling interest rates, issuers of debt securities may repay higher rate securities before their maturity dates. This may cause the Fund to lose potential price appreciation and to be forced to reinvest the unanticipated proceeds at lower interest rates. This may adversely affect the NAV of the Fund’s shares.
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| Risk of Substantial Redemptions [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Risk of Substantial Redemptions is the risk that if substantial numbers of shares in the Fund were to be redeemed at the same time or at approximately the same time, the Fund might be required to liquidate a significant portion of its investment portfolio quickly to meet the redemptions. The Fund might be forced to sell portfolio securities at prices or at times when it would otherwise not have sold them.
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| Securities Lending Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Securities Lending Risk. The Fund may make secured loans of its portfolio securities. Any decline in the value of a portfolio security that occurs while the security is out on loan is borne by the Fund, and will adversely affect performance. Also, there may be delays in recovery of securities loaned, losses in the investment of collateral, and loss of rights in the collateral should the borrower of the securities fail financially while holding the security.
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| Securities Market and Selection Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Securities Market and Selection Risk is the risk that the value of securities owned by the Fund may go up or down, sometimes rapidly or unpredictably, due to factors affecting particular companies or the securities markets generally. A general downturn in the securities market may cause multiple asset classes to decline in value simultaneously. Many factors can affect this value and you may lose money by investing in the Fund. The value of a security or other asset may decline due to changes in general market conditions, economic trends or events that are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. Local, regional or global events such as war, acts of terrorism, the spread of infectious illness or other public health issues like pandemics or epidemics, recessions, or other events could have a significant impact on the Fund and its investments. Selection risk is the risk that the securities selected by Fund management will underperform the markets, the relevant indices or the securities selected by other funds with similar investment objectives and investment strategies. This means you may lose money.
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| Short Sales Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Short Sales Risk is the risk of loss associated with any appreciation on the price of a security borrowed in connection with a short sale. The Fund may engage in short sales that are not made “against‑the‑box,” which means that the Fund may sell short securities even when they are not actually owned or otherwise covered at all times during the period the short position is open. Short sales that are not made “against‑the‑box” involve unlimited loss potential since the market price of securities sold short may continuously increase.
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| Small Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small‑Cap Company Risk is the risk that investing in the securities of small‑cap companies either directly or indirectly through investments in ETFs, closed‑end funds or mutual funds may pose greater market and liquidity risks than larger, more established companies, because of limited product lines and/or operating history, limited financial resources, limited trading markets, and the potential lack of management depth. In addition, the securities of such companies are typically more volatile than securities of larger capitalization companies.
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| Special Situations Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Special Situations Risk is the risk that the Fund may seek to benefit from “special situations,” such as mergers, acquisitions, consolidations, bankruptcies, liquidations, reorganizations, recapitalizations, spin-offs, divestitures, restructurings, tender or exchange offers or other unusual events expected to affect a particular issuer. Investing in special situations carries the risk that certain of such situations may not happen as anticipated or the market may react differently than expected to such situations. The securities of companies involved in special situations may be more volatile than other securities, may at times be illiquid, or may be difficult to value. Certain special situations carry the additional risks inherent in difficult corporate transitions and the securities of such companies may be more likely to lose value than the securities of more stable companies.
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| Swaps Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Swaps Risk involves both the risks associated with an investment in the underlying investments or instruments (including equity investments) and counterparty risk. In a standard over‑the‑counter (“OTC”) swap transaction, two parties agree to exchange the returns, differentials in rates of return or some other amount calculated based on the “notional amount” of predetermined investments or instruments, which may be adjusted for an interest factor. Swaps can involve greater risks than direct investments in securities, because swaps may be leveraged and OTC swaps are subject to counterparty risk (e.g., the risk of a counterparty’s defaulting on the obligation or bankruptcy), credit risk and pricing risk (i.e., swaps may be difficult to value). Swaps may also be considered illiquid. Certain swap transactions, including certain classes of interest rate swaps and credit default swaps, may be subject to mandatory clearing and exchange trading, although the swaps in which the Fund will invest are not currently subject to mandatory clearing and exchange trading. The use of swaps is a highly specialized activity which involves investment techniques, risk analyses and tax planning different from those associated with ordinary portfolio securities transactions. The value of swaps, like many other derivatives, may move in unexpected ways and may result in losses for the Fund.
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| Tax Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Tax Risk is the risk that the U.S. income tax rules may be uncertain when applied to specific arbitrage transactions, including identifying deferred losses from wash sales or realized gains from constructive sales, among other issues. Such uncertainty may cause the Fund to be exposed to unexpected tax liability.
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| Non U S Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non‑U.S. Securities Risk is the risk associated with investing in non‑U.S. issuers. Investments in securities of non‑U.S. issuers involve certain risks not involved in domestic investments (for example, fluctuations in foreign exchange rates (for non‑U.S. securities not denominated in U.S. dollars); future foreign economic, financial, political and social developments; nationalization; exploration or confiscatory taxation; smaller markets; different trading and settlement practices; less governmental supervision; and different accounting, auditing and financial recordkeeping standards and requirements) that may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies. In addition, certain investments in non‑U.S. securities may be subject to foreign withholding and other taxes on interest, dividends, capital gains or other income or proceeds. Those taxes will reduce the Fund’s yield on any such securities. See the “Taxation” section below.
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| Merger Arbitrage and Event Driven Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Merger Arbitrage and Event-Driven Risk is the risk that the Adviser’s evaluation of the outcome of a proposed event, whether it be a merger, reorganization, regulatory issue or other event, will prove incorrect and that the Fund’s return on the investment will be negative. Even if the Adviser’s judgment regarding the likelihood of a specific outcome proves correct, the expected event may be delayed or completed on terms other than those originally proposed, which may cause the Fund to lose money. The Fund’s expected gain on an individual arbitrage investment is normally considerably smaller than the possible loss should the transaction be unexpectedly terminated. The Fund’s principal investment strategies are not specifically designed to benefit from general appreciation in the equity markets or general improvement in the economic conditions in the global economy. Accordingly, the Fund may underperform the broad equity markets under certain market conditions, such as during periods when there has been rapid appreciation in the equity markets. The Fund may also underperform the broad equity markets if it holds a significant portion of its assets in cash and money market instruments for an extended period of time due to a lack of merger arbitrage opportunities.
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| Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | When you sell Fund shares, they may be worth less than what you paid for them. Consequently, you can lose money by investing in the Fund. |
| Risk Not Insured Depository Institution [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. |
| Risk Nondiversified Status [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non‑Diversification Risk is the risk that an investment in the Fund could fluctuate in value more than an investment in a diversified fund. As a non‑diversified fund for purposes of the 1940 Act, the Fund may invest a larger portion of its assets in the securities of fewer issuers than a diversified fund. The Fund’s investment in fewer issuers may result in the Fund’s shares being more sensitive to the economic results of those issuers. An investment in the Fund could fluctuate in value more than an investment in a diversified fund.
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