| N-2 - USD ($) | 3 Months Ended | |||||||||||||
| Jul. 11, 2024 | May 31, 2024 | May 31, 2024 | Feb. 29, 2024 | Nov. 30, 2023 | Aug. 31, 2023 | May 31, 2023 | Feb. 28, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | May 31, 2022 | Feb. 28, 2022 | Nov. 30, 2021 | ||
| Cover [Abstract] | ||||||||||||||
| Entity Central Index Key | 0000810943 | |||||||||||||
| Amendment Flag | false | |||||||||||||
| Document Type | 424B3 | |||||||||||||
| Entity Registrant Name | HIGH INCOME SECURITIES FUND | |||||||||||||
| Fee Table [Abstract] | ||||||||||||||
| Shareholder Transaction Expenses [Table Text Block] | Shareholder Transaction Expenses Sales load None Offering expenses (1) 0.09% Dividend Reinvestment and Cash Purchase Plan Fees None (1) Assuming the Fund will have 35,060,927 Shares outstanding if fully subscribed and Offering expenses to be paid by the Fund are estimated to be approximately $117,000 or approximately $0.003 per Share. | |||||||||||||
| Sales Load [Percent] | 0% | |||||||||||||
| Dividend Reinvestment and Cash Purchase Fees | $ 0 | |||||||||||||
| Other Transaction Expenses [Abstract] | ||||||||||||||
| Other Transaction Expenses [Percent] | [1] | 0.09% | ||||||||||||
| Annual Expenses [Table Text Block] | Annual Expenses (as a percentage of net assets attributable to the Shares) Management fees (2) 0.00% Interest Payments on Borrowed Funds None Other expenses (2)(3) 0.95% Acquired Fund fees and expenses (4) 3.82% Total Annual Expenses 4.77% (2) The Fund does not pay a management fee. The Fund’s assets are managed by the Investment Committee. The members of the Investment Committee are compensated by the Fund (on an annual basis paid monthly in advance) as follows: $150,000 each for Messrs. Goldstein and Dakos and $75,000 for Mr. Das. This compensation is included in “Other Expenses.” (3) “Other Expenses” are based on estimated amounts for the current fiscal year. (4) The Fund invests in other closed-end investment companies and ETFs (collectively, the “Acquired Funds”). The Shareholders indirectly bear a pro rata portion of the fees and expenses of the Acquired Funds in which the Fund invests. Acquired Fund fees and expenses are based on estimated amounts for the current fiscal year. | |||||||||||||
| Management Fees [Percent] | [2] | 0% | ||||||||||||
| Interest Expenses on Borrowings [Percent] | 0% | |||||||||||||
| Acquired Fund Fees and Expenses [Percent] | [3] | 3.82% | ||||||||||||
| Other Annual Expenses [Abstract] | ||||||||||||||
| Other Annual Expenses [Percent] | [2],[4] | 0.95% | ||||||||||||
| Total Annual Expenses [Percent] | 4.77% | |||||||||||||
| Expense Example [Table Text Block] | Example (5) The following example illustrates the hypothetical expenses (including estimated expenses with respect to year 1 of this Offering of approximately $117,000) that you would pay on a $1,000 investment in the Shares, assuming (i) annual expenses of 4.77 1 Year 3 Years 5 Years 10 Years You would pay the following expenses on a $1,000 investment, assuming a 5% annual return $49 $144 $241 $483 (5) The example assumes that the estimated “Other Expenses” set forth in the Annual Expenses table remain the same each year and that all dividends and distributions are reinvested at NAV. Actual expenses may be greater or less than those assumed. The example further assumes that the Fund uses no leverage, as currently intended, and the Fund does not intend to utilize any leverage within one year from the effective date of this Registration Statement. Moreover, the Fund’s actual rate of return will vary and may be greater or less than the hypothetical 5% annual return. | |||||||||||||
| Expense Example, Year 01 | $ 49 | |||||||||||||
| Expense Example, Years 1 to 3 | 144 | |||||||||||||
| Expense Example, Years 1 to 5 | 241 | |||||||||||||
| Expense Example, Years 1 to 10 | $ 483 | |||||||||||||
| Purpose of Fee Table , Note [Text Block] | The purpose of the above table is to help a Shareholder understand the fees and expenses that such Shareholder would bear directly or indirectly. The example should not be considered a representation of actual future expenses. Actual expenses may be higher or lower than those shown. | |||||||||||||
| Other Transaction Fees, Note [Text Block] | Assuming the Fund will have 35,060,927 Shares outstanding if fully subscribed and Offering expenses to be paid by the Fund are estimated to be approximately $117,000 or approximately $0.003 per Share. | |||||||||||||
| Other Expenses, Note [Text Block] | “Other Expenses” are based on estimated amounts for the current fiscal year. | |||||||||||||
| Management Fee not based on Net Assets, Note [Text Block] | The Fund does not pay a management fee. The Fund’s assets are managed by the Investment Committee. The members of the Investment Committee are compensated by the Fund (on an annual basis paid monthly in advance) as follows: $150,000 each for Messrs. Goldstein and Dakos and $75,000 for Mr. Das. This compensation is included in “Other Expenses.” | |||||||||||||
| Acquired Fund Fees and Expenses, Note [Text Block] | The Fund invests in other closed-end investment companies and ETFs (collectively, the “Acquired Funds”). The Shareholders indirectly bear a pro rata portion of the fees and expenses of the Acquired Funds in which the Fund invests. Acquired Fund fees and expenses are based on estimated amounts for the current fiscal year. | |||||||||||||
| Acquired Fund Fees Estimated, Note [Text Block] | Acquired Fund fees and expenses are based on estimated amounts for the current fiscal year. | |||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Investment Objectives and Practices [Text Block] | The disclosure below describes the Fund’s current Investment Objective and Investment Strategies. As noted earlier, at a meeting on June 14, 2024, the Board approved an investment advisory agreement (the “Advisory Agreement”) between the Fund and Bulldog Investors, LLP (“Bulldog”) whereby Bulldog will provide investment management services to the Fund. At its June 14, 2024 meeting, the Board also approved changes to the Fund’s investment strategies and fundamental policies in order to expand the types of investments the Fund can make and increase the Fund’s flexibility to pursue investment opportunities (the “Investment Changes”). The Board did not consider the conversion of the Fund to an open-end mutual fund as part of the Investment Changes. The Advisory Agreement and the Investment Changes will not take effect unless and until they are approved by the Fund’s shareholders. Investment Objective The Fund’s current investment objective is to seek to provide high current income as a primary objective and capital appreciation as a secondary objective. There can be no assurance that the Fund’s objective will be achieved. Investment Strategies The Investment Committee currently manages the Fund’s assets with a focus on discounted securities of income-oriented closed-end investment companies and business development companies. The Fund’s objective is pursued by primarily investing, under normal circumstances, at least 80% of its net assets in fixed income securities, including debt instruments, convertible securities and preferred stocks. The Fund also invests in high-yielding non-convertible securities with the potential for capital appreciation. The primary focus of the investment strategy is to acquire discounted securities of income-oriented closed-end investment companies and business development companies. In addition, units or common shares issued by special purpose acquisition companies (SPACs) may comprise up to 20% of the Fund’s portfolio. The Fund may hold fixed income securities with any maturity or duration. The Fund may, from time to time, take temporary defensive positions that are inconsistent with the Fund’s principal investment strategies in attempting to respond to adverse market, economic, political or other conditions. During such times, the Fund may temporarily invest up to 100% of its assets in cash or cash equivalents, including money market instruments, prime commercial paper, repurchase agreements, Treasury bills and other short-term obligations of the U.S. Government, its agencies or instrumentalities. In these and in other cases, the Fund may not achieve its investment objective. The Investment Committee may invest the Fund’s cash balances in any investments it deems appropriate, subject to the restrictions set forth in below under “Fundamental Investment Restrictions” and as permitted under the 1940 Act, including investments in repurchase agreements, money market funds, additional repurchase agreements, U.S. Treasury and U.S. agency securities, municipal bonds and bank accounts. Any income earned from such investments will ordinarily be reinvested by the Fund in accordance with its investment program. Many of the considerations entering into the Investment Committee’s recommendations and decisions are subjective. Portfolio Investments Other Closed-End Investment Companies (including BDCs) The Fund may invest without limitation in other closed-end investment companies, provided that the Fund limits its investment in securities issued by other investment companies so that, unless legally permissible, not more than 3% of the outstanding voting stock of any one investment company will be owned by the Fund. There can be no assurance that the investment objective of any investment company in which the Fund invests will be achieved. Closed-end investment companies are subject to the risks of investing in the underlying securities. The Fund, as a holder of the securities of the closed-end investment company, will bear its pro rata portion of the closed-end investment company’s expenses, including advisory fees. These expenses are in addition to the direct expenses of the Fund’s own operations. The closed end investment companies in which the Fund invests hold fixed income securities. The Fund “looks through” to these investments in determining whether at least 80% of the Fund’s investments are comprised of fixed income securities. Special Purpose Acquisition Companies The Fund may invest in stocks, warrants, and other securities of special purpose acquisition companies or similar special purpose entities that pool funds to seek potential acquisition opportunities (“SPACs”). Unless and until an acquisition meeting the SPAC’s requirements is completed, a SPAC generally invests its assets (less a portion retained to cover expenses) in U.S. Government securities, money market securities and cash. If an acquisition that meets the requirements for the SPAC is not completed within a pre-established period of time, the invested funds are returned to the entity’s shareholders. 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, be subject to restrictions on resale and/or may trade at a discount. Common Stocks The Fund will invest in common stocks. Common stocks represent an ownership interest in an issuer. While offering greater potential for long-term growth, common stocks are more volatile and riskier than some other forms of investment. Common stock prices fluctuate for many reasons, including adverse events, such as an unfavorable earnings report, changes in investors’ perceptions of the financial condition of an issuer or the general condition of the relevant stock market, or when political or economic events affecting the issuers occur. In addition, common stock prices may be sensitive to rising interest rates as the costs of capital rise and borrowing costs increase. Preferred Stocks The Fund may invest in preferred stocks. Preferred stock, like common stock, represents an equity ownership in an issuer. Generally, preferred stock has a priority of claim over common stock in dividend payments and upon liquidation of the issuer. Unlike common stock, preferred stock does not usually have voting rights. Preferred stock in some instances is convertible into common stock. Although they are equity securities, preferred stocks have characteristics of both debt and common stock. Like debt, their promised income is contractually fixed. Like common stock, they do not have rights to precipitate bankruptcy proceedings or collection activities in the event of missed payments. Other equity characteristics are their subordinated position in an issuer’s capital structure and that their quality and value are heavily dependent on the profitability of the issuer rather than on any legal claims to specific assets or cash flows. Distributions on preferred stock must be declared by the board of directors and may be subject to deferral, and thus they may not be automatically payable. Income payments on preferred stocks may be cumulative, causing dividends and distributions to accrue even if not declared by the company’s board or otherwise made payable, or they may be non-cumulative, so that skipped dividends and distributions do not continue to accrue. There is no assurance that dividends on preferred stocks in which the Fund invests will be declared or otherwise made payable. The Fund may invest in non-cumulative preferred stock, although the Investment Committee may consider, among other factors, their non-cumulative nature in making any decision to purchase or sell such securities. Shares of preferred stock have a liquidation value that generally equals the original purchase price at the date of issuance. The market values of preferred stock may be affected by favorable and unfavorable changes impacting the issuers’ industries or sectors, including companies in the utilities and financial services sectors, which are prominent issuers of preferred stock. They may also be affected by actual and anticipated changes or ambiguities in the tax status of the security and by actual and anticipated changes or ambiguities in tax laws, such as changes in corporate and individual income tax rates, and in the dividends received deduction for corporate taxpayers or the lower rates applicable to certain dividends. Because the claim on an issuer’s earnings represented by preferred stock may become onerous when interest rates fall below the rate payable on the stock or for other reasons, the issuer may redeem preferred stock, generally after an initial period of call protection in which the stock is not redeemable. Thus, in declining interest rate environments in particular, the Fund’s holdings of higher dividend-paying preferred stocks may be reduced and the Fund may be unable to acquire securities paying comparable rates with the redemption proceeds. Warrants The Fund may invest in equity and index warrants of domestic and international issuers. Equity warrants are securities that give the holder the right, but not the obligation, to subscribe for equity issues of the issuing company or a related company at a fixed price either on a certain date or during a set period. Changes in the value of a warrant do not necessarily correspond to changes in the value of its underlying security. The price of a warrant may be more volatile than the price of its underlying security, and a warrant may offer greater potential for capital appreciation as well as capital loss. Warrants do not entitle a holder to dividends or voting rights with respect to the underlying security and do not represent any rights in the assets of the issuing company. A warrant ceases to have value if it is not exercised prior to its expiration date. These factors can make warrants more speculative than other types of investments. The sale of a warrant results in a long or short-term capital gain or loss depending on the period for which the warrant is held. Corporate Bonds, Government Debt Securities and Other Debt Securities The Fund may invest in corporate bonds, debentures and other debt securities or in investment companies which hold such instruments. Bonds and other debt securities generally are issued by corporations and other issuers to borrow money from investors. The issuer pays the investor a fixed rate of interest and normally must repay the amount borrowed on or before maturity. Certain debt securities are “perpetual” in that they have no maturity date. The Fund will invest in government debt securities, including those of emerging market issuers or of other non-U.S. issuers. These securities may be U.S. dollar-denominated or non-U.S. dollar-denominated and include: (a) debt obligations issued or guaranteed by foreign national, provincial, state, municipal or other governments with taxing authority or by their agencies or instrumentalities; and (b) debt obligations of supranational entities. Government debt securities include: debt securities issued or guaranteed by governments, government agencies or instrumentalities and political subdivisions; debt securities issued by government owned, controlled or sponsored entities; interests in entities organized and operated for the purpose of restructuring the investment characteristics issued by the above noted issuers; or debt securities issued by supranational entities such as the World Bank or the European Union. The Fund may also invest in securities denominated in currencies of emerging market countries. Emerging market debt securities generally are rated in the lower rating categories of recognized credit rating agencies or are unrated and considered to be of comparable quality to lower rated debt securities. Convertible Securities The Fund may invest in convertible securities. Convertible securities include fixed income securities that may be exchanged or converted into a predetermined number of shares of the issuer’s underlying common stock at the option of the holder during a specified period. Convertible securities may take the form of convertible preferred stock, convertible bonds or debentures, units consisting of “usable” bonds and warrants or a combination of the features of several of these securities. The investment characteristics of each convertible security vary widely, which allows convertible securities to be employed for a variety of investment strategies. The Fund will exchange or convert convertible securities into shares of underlying common stock when, in the opinion of the Investment Committee, the investment characteristics of the underlying common shares will assist the Fund in achieving its investment objective. The Fund may also elect to hold or trade convertible securities. In selecting convertible securities, the Investment Committee evaluates the investment characteristics of the convertible security as a fixed income instrument, and the investment potential of the underlying equity security for capital appreciation. In evaluating these matters with respect to a particular convertible security, the Investment Committee considers numerous factors, including the economic and political outlook, the value of the security relative to other investment alternatives, trends in the determinants of the issuer’s profits, and the issuer’s management capability and practices. Other Securities Although it has no current intention to do so to any material extent, the Fund may determine to invest the Fund’s assets in some or all of the following securities. Illiquid Securities Illiquid securities are securities that are not readily marketable. Illiquid securities include securities that have legal or contractual restrictions on resale, and repurchase agreements maturing in more than seven days. Illiquid securities involve the risk that the securities will not be able to be sold at the time desired or at prices approximating the value at which the Fund is carrying the securities. Where registration is required to sell a security, the Fund may be obligated to pay all or part of the registration expenses, and a considerable period may elapse between the decision to sell and the time the Fund may be permitted to sell a security under an effective registration statement. If, during such a period, adverse market conditions were to develop, the Fund might obtain a less favorable price than prevailed when it decided to sell. The Fund may invest up to 10% of the value of its net assets in illiquid securities. Restricted securities for which no market exists and other illiquid investments are valued at fair value as determined in accordance with procedures approved and periodically reviewed by the Board of Trustees. The Fund does not consider its investments in SPACs to be illiquid because they are publicly traded securities. Rule 144A Securities The Fund may invest in restricted securities that are eligible for resale pursuant to Rule 144A under the Securities Act of 1933, as amended, (the “1933 Act”). Generally, Rule 144A establishes a safe harbor from the registration requirements of the 1933 Act for resale by large institutional investors of securities that are not publicly traded. The Investment Committee determines the liquidity of the Rule 144A securities according to guidelines adopted by the Board of Trustees. The Board of Trustees monitors the application of those guidelines and procedures. Securities eligible for resale pursuant to Rule 144A, which are determined to be liquid, are not subject to the Fund’s 10% limit on investments in illiquid securities. | |||||||||||||
| Risk Factors [Table Text Block] | An investment in the Fund is not guaranteed to achieve its investment objective; is not a deposit with a bank; is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any other government agency; and is subject to investment risks. The value of the Fund’s investments will increase or decrease based on changes in the prices of the investments it holds. You could lose money by investing in the Fund. By itself, the Fund does not constitute a balanced investment program. You should consider carefully the following principal and non-principal risks before investing in the Fund. There may be additional risks that the Fund does not currently foresee or consider material. You may wish to consult with your legal or tax advisors, before deciding whether to invest in the Fund. This section describes the risk factors associated with investment in the Fund specifically, as well as those factors generally associated with investment in an investment company with investment objectives, investment policies, capital structure or trading markets similar to the Fund’s. Each risk summarized below is a risk of investing in the Fund and different risks may be more significant at different times depending upon market conditions or other factors. The Fund may invest in securities of other investment companies (“underlying funds”). The Fund may be subject to the risks of the securities and other instruments described below through its own direct investments and indirectly through investments in the underlying funds. Risks Related to this Offering Decline in Trading Price: Value versus Subscription Price. Termination of Offering. Rejection of Exercise of Subscription Rights. Discount to Net Asset Value $7.55 $6.82 9.67% Dilution of Ownership . As a result of the terms of this offer, Shareholders who do not fully exercise their Rights will own, upon completion of this offer, a smaller proportional interest in the Fund than they owned prior to the offer. Dilution to NAV Principal Risks Closed-End Investment Company Risk. Special Purpose Acquisition Companies Risk. Management Risk. Market Risk. Local, state, regional, national or global events such as war, acts of terrorism, the spread of infectious illness or other public health issues, recessions, or other events could have a significant impact on the Fund and its investments and could result in decreases to the Fund’s net asset value. Political, geopolitical, natural and other events, including war, terrorism, trade disputes, government shutdowns, market closures, natural and environmental disasters, epidemics, pandemics and other public health crises and related events and governments’ reactions to such events have led, and in the future may lead, to economic uncertainty, decreased economic activity, increased market volatility and other disruptive effects on U.S. and global economies and markets. Such events may have significant adverse direct or indirect effects on the Fund and its investments. For example, ongoing armed conflicts between Russia and Ukraine in Europe and among Israel, Hamas and other militant groups in the Middle East, have caused and could continue to cause significant market disruptions and volatility within the markets in Russia, Europe, the Middle East and the United States. The hostilities and sanctions resulting from those hostilities have and could continue to have a significant impact on certain Fund investments, as well as Fund performance. In addition, a widespread health crisis such as a global pandemic could cause substantial market volatility, exchange trading suspensions and closures, impact the ability to complete redemptions, and affect Fund performance. A health crisis may exacerbate other pre-existing political, social and economic risks. The increasing interconnectedness of markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers. COVID-19 resulted in travel restrictions, closed international borders, enhanced health screenings at ports of entry and elsewhere, disruption of and delays in healthcare service preparation and delivery, prolonged quarantines, cancellations, business and school closings, supply chain disruptions, and lower consumer demand, as well as general concern and uncertainty. The impact of COVID-19, and other infectious illness outbreaks that may arise in the future, could adversely affect the economies of many nations or the entire global economy, individual issuers and capital markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illnesses in emerging market countries may be greater due to generally less established healthcare systems. Risk Related to Fixed Income Securities, including Non-Investment Grade Securities. Interest Rate Risk. Credit Risk. Extension Risk. i.e. Debt Security Risk. Market Discount from Net Asset Value Risk. Leverage Risk Defensive Position Risk. Changes in Policies Risk. Preferred Stock Risk. Investment in preferred stocks carries risks, including credit risk, deferral risk, redemption risk, limited voting rights, risk of subordination and lack of liquidity. Fully taxable or hybrid preferred securities typically contain provisions that allow an issuer, at its discretion, to defer distributions for up to 20 consecutive quarters. Distributions on preferred stock must be declared by the board of trustees and may be subject to deferral, and thus they may not be automatically payable. Income payments on preferred stocks may be cumulative, causing dividends and distributions to accrue even if not declared by the company’s board or otherwise made payable, or they may be non-cumulative, so that skipped dividends and distributions do not continue to accrue. There is no assurance that dividends on preferred stocks in which the Fund invests will be declared or otherwise made payable. The Fund may invest in non-cumulative preferred stock, although the Fund’s Investment Committee would consider, among other factors, their non-cumulative nature in making any decision to purchase or sell such securities. Shares of preferred stock have a liquidation value that generally equals the original purchase price at the date of issuance. The market values of preferred stock may be affected by favorable and unfavorable changes impacting the issuers’ industries or sectors, including companies in the utilities and financial services sectors, which are prominent issuers of preferred stock. They may also be affected by actual and anticipated changes or ambiguities in the tax status of the security and by actual and anticipated changes or ambiguities in tax laws, such as changes in corporate and individual income tax rates, and in the dividends received deduction for corporate taxpayers or the lower rates applicable to certain dividends. Because the claim on an issuer’s earnings represented by preferred stock may become onerous when interest rates fall below the rate payable on the stock or for other reasons, the issuer may redeem preferred stock, generally after an initial period of call protection in which the stock is not redeemable. Thus, in declining interest rate environments in particular, the Fund’s holdings of higher dividend paying preferred stocks may be reduced and the Fund may be unable to acquire securities paying comparable rates with the redemption proceeds. In the event of a redemption, the Fund may not be able to reinvest the proceeds at comparable rates of return. Convertible Securities Risk. The value of a convertible security, including, for example, a warrant, is a function of its “investment value” (determined by its yield in comparison with the yields of other securities of comparable maturity and quality that do not have a conversion privilege) and its “conversion value” (the security’s worth, at market value, if converted into the underlying common stock). The investment value of a convertible security is influenced by changes in interest rates, with investment value declining as interest rates increase and increasing as interest rates decline. The credit standing of the issuer and other factors may also have an effect on the convertible security’s investment value. The conversion value of a convertible security is determined by the market price of the underlying common stock. If the conversion value is low relative to the investment value, the price of the convertible security is governed principally by its investment value. Generally, the conversion value decreases as the convertible security approaches maturity. To the extent the market price of the underlying common stock approaches or exceeds the conversion price, the price of the convertible security will be increasingly influenced by its conversion value. A convertible security generally will sell at a premium over its conversion value by the extent to which investors place value on the right to acquire the underlying common stock while holding a fixed income security. A convertible security may be subject to redemption at the option of the issuer at a price established in the convertible security’s governing instrument. If a convertible security held by the Fund is called for redemption, the Fund will be required to permit the issuer to redeem the security, convert it into the underlying common stock or sell it to a third party. Any of these actions could have an adverse effect on the Fund’s ability to achieve its investment objective. Issuer Specific Changes Risk. Non-Principal Risks In addition to the principal risks set forth above, the following additional risks may apply to an investment in the Fund. Anti-Takeover Provisions Risk. Common Stock Risk. Exchange Traded Funds Risk. Foreign Securities Risk Illiquid Securities Risk. Portfolio Turnover Risk. Small and Medium Cap Company Risk. Foreign Currency Risk i.e. i.e. | |||||||||||||
| Share Price [Table Text Block] | Trading and Net Asset Value Information In the past, the Shares have traded at a discount in relation to NAV. 41,608 The following table shows for the quarters indicated: (i) the high and low sale price of the Shares on the NYSE; (ii) the high and low NAV per Share; and (iii) the high and low premium or discount to NAV at which the Shares were trading (as a percentage of NAV): Fiscal Quarter Ended High Close Low Close High NAV Low NAV Premium/ (Discount) to High NAV Premium/ (Discount) to Low NAV 11/30/21 10.05 8.36 9.37 8.78 6.40 % -3.19 % 02/28/22 8.85 8.03 8.87 8.54 -0.23 -5.39 05/31/22 8.18 7.4 8.67 7.97 -7.601 -4.52 08/31/22 7.88 7.12 8.20 7.60 -5.85 -4.08 11/30/22 7.33 6.29 7.89 7.11 -7.35 -11.39 02/28/23 7.11 6.38 7.70 7.19 -8.57 -11.27 05/31/23 6.72 6.09 7.57 7.20 -11.49 -14.03 08/31/23 6.76 6.18 7.56 7.32 -13.76 -15.57 11/30/23 6.74 5.72 7.45 6.91 -10.34 -17.22 02/29/24 6.96 6.33 7.51 7.37 -12.12 -11.53 05/31/24 6.82 6.20 7.64 7.39 -12.43 -15.43 | |||||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | ||||||||||||||
| Capital Stock [Table Text Block] | Shares of Beneficial Interest The Fund’s Amended and Restated Agreement and Declaration of Trust (the “Charter”), which has been filed with the SEC, permits the Fund to issue an unlimited number of shares of beneficial interest without par value. Fractional shares are permitted. Each Share represents an equal proportionate interest in the net assets of the Fund with each other Share. Holders of Shares will be entitled to the payment of dividends when declared by the Board. Each whole Share shall be entitled to one vote as to matters on which it is entitled to vote pursuant to the terms of the Charter on file with the SEC. Upon liquidation of the Fund, after paying or adequately providing for the payment of all liabilities of the Fund, and upon receipt of such releases, indemnities and refunding agreements as they deem necessary for the protection of the Trustees, the Board may distribute the remaining net assets of the Fund among its Shareholders. Shares are not liable to further calls or to assessment by the Fund. There are no pre-emptive rights associated with Shares. The Fund has no present intention of offering additional Shares, except as described herein in connection with the exercise of the Rights. Other offerings of its Shares, if made, will require approval of the Board. Any additional offering will not be sold at a price per Share below the then current NAV (exclusive of underwriting discounts and commissions) except in connection with an offering to existing Shareholders or with the consent of a majority of the Fund’s outstanding Shares. The Fund generally will not issue share certificates. The Fund’s Transfer Agent will maintain an account for each Shareholder upon which the registration and transfer of Shares are recorded, and transfers will be reflected by bookkeeping entry, without physical delivery. The Transfer Agent will require that a Shareholder provide requests in writing, accompanied by a valid signature guarantee form, when changing certain information in an account such as wiring instructions or telephone privileges. | |||||||||||||
| Outstanding Securities [Table Text Block] | Outstanding Securities The following table sets forth certain information regarding the Fund’s authorized shares and shares outstanding as of May 31, 2024. (1) (2) (3) (4) Title of Class Amount Authorized Amount Held By Registrant or for its Account Amount Outstanding Exclusive of Amount Shown Under (3) Common Shares of Beneficial Interest Unlimited 7,365,349 17,530,463 | |||||||||||||
| Decline in Trading Price [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Decline in Trading Price: | |||||||||||||
| Value versus Subscription Price [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Value versus Subscription Price. | |||||||||||||
| Termination of Offering [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Termination of Offering. | |||||||||||||
| Rejection of Exercise of Subscription Rights [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Rejection of Exercise of Subscription Rights. | |||||||||||||
| Discount to Net Asset Value [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Discount to Net Asset Value $7.55 $6.82 9.67% | |||||||||||||
| Dilution of Ownership [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Dilution of Ownership . As a result of the terms of this offer, Shareholders who do not fully exercise their Rights will own, upon completion of this offer, a smaller proportional interest in the Fund than they owned prior to the offer. | |||||||||||||
| Dilution to NAV [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Dilution to NAV | |||||||||||||
| Closed-End Investment Company Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Closed-End Investment Company Risk. | |||||||||||||
| Special Purpose Acquisition Companies Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Special Purpose Acquisition Companies Risk. | |||||||||||||
| Management Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Management Risk. | |||||||||||||
| Market Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Market Risk. Local, state, regional, national or global events such as war, acts of terrorism, the spread of infectious illness or other public health issues, recessions, or other events could have a significant impact on the Fund and its investments and could result in decreases to the Fund’s net asset value. Political, geopolitical, natural and other events, including war, terrorism, trade disputes, government shutdowns, market closures, natural and environmental disasters, epidemics, pandemics and other public health crises and related events and governments’ reactions to such events have led, and in the future may lead, to economic uncertainty, decreased economic activity, increased market volatility and other disruptive effects on U.S. and global economies and markets. Such events may have significant adverse direct or indirect effects on the Fund and its investments. For example, ongoing armed conflicts between Russia and Ukraine in Europe and among Israel, Hamas and other militant groups in the Middle East, have caused and could continue to cause significant market disruptions and volatility within the markets in Russia, Europe, the Middle East and the United States. The hostilities and sanctions resulting from those hostilities have and could continue to have a significant impact on certain Fund investments, as well as Fund performance. In addition, a widespread health crisis such as a global pandemic could cause substantial market volatility, exchange trading suspensions and closures, impact the ability to complete redemptions, and affect Fund performance. A health crisis may exacerbate other pre-existing political, social and economic risks. The increasing interconnectedness of markets around the world may result in many markets being affected by events or conditions in a single country or region or events affecting a single or small number of issuers. COVID-19 resulted in travel restrictions, closed international borders, enhanced health screenings at ports of entry and elsewhere, disruption of and delays in healthcare service preparation and delivery, prolonged quarantines, cancellations, business and school closings, supply chain disruptions, and lower consumer demand, as well as general concern and uncertainty. The impact of COVID-19, and other infectious illness outbreaks that may arise in the future, could adversely affect the economies of many nations or the entire global economy, individual issuers and capital markets in ways that cannot necessarily be foreseen. In addition, the impact of infectious illnesses in emerging market countries may be greater due to generally less established healthcare systems. | |||||||||||||
| Risk Related to Fixed Income Securities, including Non-Investment Grade Securities [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Risk Related to Fixed Income Securities, including Non-Investment Grade Securities. | |||||||||||||
| Credit Risks [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Credit Risk. | |||||||||||||
| Extension Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Extension Risk. i.e. | |||||||||||||
| Debt Security Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Debt Security Risk. | |||||||||||||
| Market Discount from Net Asset Value Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Market Discount from Net Asset Value Risk. | |||||||||||||
| Leverage Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Leverage Risk | |||||||||||||
| Defensive Position Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Defensive Position Risk. | |||||||||||||
| Changes in Policies Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Changes in Policies Risk. | |||||||||||||
| Preferred Stock Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Preferred Stock Risk. Investment in preferred stocks carries risks, including credit risk, deferral risk, redemption risk, limited voting rights, risk of subordination and lack of liquidity. Fully taxable or hybrid preferred securities typically contain provisions that allow an issuer, at its discretion, to defer distributions for up to 20 consecutive quarters. Distributions on preferred stock must be declared by the board of trustees and may be subject to deferral, and thus they may not be automatically payable. Income payments on preferred stocks may be cumulative, causing dividends and distributions to accrue even if not declared by the company’s board or otherwise made payable, or they may be non-cumulative, so that skipped dividends and distributions do not continue to accrue. There is no assurance that dividends on preferred stocks in which the Fund invests will be declared or otherwise made payable. The Fund may invest in non-cumulative preferred stock, although the Fund’s Investment Committee would consider, among other factors, their non-cumulative nature in making any decision to purchase or sell such securities. Shares of preferred stock have a liquidation value that generally equals the original purchase price at the date of issuance. The market values of preferred stock may be affected by favorable and unfavorable changes impacting the issuers’ industries or sectors, including companies in the utilities and financial services sectors, which are prominent issuers of preferred stock. They may also be affected by actual and anticipated changes or ambiguities in the tax status of the security and by actual and anticipated changes or ambiguities in tax laws, such as changes in corporate and individual income tax rates, and in the dividends received deduction for corporate taxpayers or the lower rates applicable to certain dividends. Because the claim on an issuer’s earnings represented by preferred stock may become onerous when interest rates fall below the rate payable on the stock or for other reasons, the issuer may redeem preferred stock, generally after an initial period of call protection in which the stock is not redeemable. Thus, in declining interest rate environments in particular, the Fund’s holdings of higher dividend paying preferred stocks may be reduced and the Fund may be unable to acquire securities paying comparable rates with the redemption proceeds. In the event of a redemption, the Fund may not be able to reinvest the proceeds at comparable rates of return. | |||||||||||||
| Convertible Securities Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Convertible Securities Risk. The value of a convertible security, including, for example, a warrant, is a function of its “investment value” (determined by its yield in comparison with the yields of other securities of comparable maturity and quality that do not have a conversion privilege) and its “conversion value” (the security’s worth, at market value, if converted into the underlying common stock). The investment value of a convertible security is influenced by changes in interest rates, with investment value declining as interest rates increase and increasing as interest rates decline. The credit standing of the issuer and other factors may also have an effect on the convertible security’s investment value. The conversion value of a convertible security is determined by the market price of the underlying common stock. If the conversion value is low relative to the investment value, the price of the convertible security is governed principally by its investment value. Generally, the conversion value decreases as the convertible security approaches maturity. To the extent the market price of the underlying common stock approaches or exceeds the conversion price, the price of the convertible security will be increasingly influenced by its conversion value. A convertible security generally will sell at a premium over its conversion value by the extent to which investors place value on the right to acquire the underlying common stock while holding a fixed income security. A convertible security may be subject to redemption at the option of the issuer at a price established in the convertible security’s governing instrument. If a convertible security held by the Fund is called for redemption, the Fund will be required to permit the issuer to redeem the security, convert it into the underlying common stock or sell it to a third party. Any of these actions could have an adverse effect on the Fund’s ability to achieve its investment objective. | |||||||||||||
| Issuer Specific Changes Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Issuer Specific Changes Risk. | |||||||||||||
| Anti-Takeover Provisions Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Anti-Takeover Provisions Risk. | |||||||||||||
| Common Stock Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Common Stock Risk. | |||||||||||||
| Exchange Traded Funds Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Exchange Traded Funds Risk. | |||||||||||||
| Foreign Securities Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Foreign Securities Risk | |||||||||||||
| Illiquid Securities Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Illiquid Securities Risk. | |||||||||||||
| Portfolio Turnover Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Portfolio Turnover Risk. | |||||||||||||
| Small and Medium Cap Company Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Small and Medium Cap Company Risk. | |||||||||||||
| Foreign Currency Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Foreign Currency Risk i.e. i.e. | |||||||||||||
| Interest Rate Risk [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Risk [Text Block] | Interest Rate Risk. | |||||||||||||
| Common Shares [Member] | ||||||||||||||
| General Description of Registrant [Abstract] | ||||||||||||||
| Lowest Price or Bid | $ 6.20 | $ 6.33 | $ 5.72 | $ 6.18 | $ 6.09 | $ 6.38 | $ 6.29 | $ 7.12 | $ 7.4 | $ 8.03 | $ 8.36 | |||
| Highest Price or Bid | 6.82 | 6.96 | 6.74 | 6.76 | 6.72 | 7.11 | 7.33 | 7.88 | 8.18 | 8.85 | 10.05 | |||
| Lowest Price or Bid, NAV | 7.39 | 7.37 | 6.91 | 7.32 | 7.20 | 7.19 | 7.11 | 7.60 | 7.97 | 8.54 | 8.78 | |||
| Highest Price or Bid, NAV | $ 7.64 | $ 7.51 | $ 7.45 | $ 7.56 | $ 7.57 | $ 7.70 | $ 7.89 | $ 8.20 | $ 8.67 | $ 8.87 | $ 9.37 | |||
| Highest Price or Bid, Premium (Discount) to NAV [Percent] | (12.43%) | (12.12%) | (10.34%) | (13.76%) | (11.49%) | (8.57%) | (7.35%) | (5.85%) | (7.601%) | (0.23%) | 6.40% | |||
| Lowest Price or Bid, Premium (Discount) to NAV [Percent] | (15.43%) | (11.53%) | (17.22%) | (15.57%) | (14.03%) | (11.27%) | (11.39%) | (4.08%) | (4.52%) | (5.39%) | (3.19%) | |||
| Share Price | $ 6.82 | $ 6.82 | ||||||||||||
| NAV Per Share | $ 7.55 | $ 7.55 | ||||||||||||
| Latest Premium (Discount) to NAV [Percent] | (9.67%) | |||||||||||||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | ||||||||||||||
| Outstanding Security, Title [Text Block] | Common Shares of Beneficial Interest | |||||||||||||
| Outstanding Security, Held [Shares] | 7,365,349 | |||||||||||||
| Outstanding Security, Not Held [Shares] | 17,530,463 | |||||||||||||
| [1] Assuming the Fund will have 35,060,927 Shares outstanding if fully subscribed and Offering expenses to be paid by the Fund are estimated to be approximately $117,000 or approximately $0.003 per Share. The Fund does not pay a management fee. The Fund’s assets are managed by the Investment Committee. The members of the Investment Committee are compensated by the Fund (on an annual basis paid monthly in advance) as follows: $150,000 each for Messrs. Goldstein and Dakos and $75,000 for Mr. Das. This compensation is included in “Other Expenses.” The Fund invests in other closed-end investment companies and ETFs (collectively, the “Acquired Funds”). The Shareholders indirectly bear a pro rata portion of the fees and expenses of the Acquired Funds in which the Fund invests. Acquired Fund fees and expenses are based on estimated amounts for the current fiscal year. “Other Expenses” are based on estimated amounts for the current fiscal year. | ||||||||||||||
