RiverNorth/DoubleLine Strategic Opportunity Fund (OPP) N-CSR 7 Sep 23 Certified annual shareholder report (management investment company) Financial data

N-2

N-2 - USD ($)		3 Months Ended									12 Months Ended
		Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2023
Cover [Abstract]
Entity Central Index Key											0001678130
Amendment Flag											false
Entity Inv Company Type											N-2
Document Type											N-CSR
Entity Registrant Name											RiverNorth/DoubleLine Strategic Opportunity Fund, Inc.
Fee Table [Abstract]
Shareholder Transaction Expenses [Table Text Block]											Common Shareholder Transaction Expenses As a Percentage of Offering Price Sales Load (1) – Offering Expenses Borne by Common Shareholders of the Fund – Dividend Reinvestment Plan Fees (2) None (1) If Common Shares are sold to or through underwriters, the Prospectus Supplement will set forth any applicable sales load and the estimated offering expenses borne by the Fund. (2) There will be no brokerage charges with respect to Common Shares issued directly by the Fund under the dividend reinvestment plan. You may pay brokerage charges in connection with open market purchases or if you direct the plan agent to sell your Common Shares held in a dividend reinvestment account.
Other Transaction Expenses [Abstract]
Annual Expenses [Table Text Block]											Annual Expenses (3) As a Percentage of Net Assets Attributable to Common Shares Management Fee (4) 1.54% Dividends on Preferred Shares (5) 2.44% Interest Expense and Fees on Borrowings (6) 0.00% Other Expenses (7) 0.68% Acquired Fund Fees and Expenses (8) 0.29% Total Annual Expenses 4.95% (3) Interest and fees on leverage in the table reflect the cost to the Fund of borrowings, expressed as a percentage of the Fund’s net assets as of June 30, 2023, using the average interest rates in effect during the fiscal year ended June 30, 2023. (4) The management fee is charged as a percentage of the Fund’s average daily Managed Assets, as opposed to net assets. (5) Dividends on Preferred Shares represent the estimated dividend expense adjusted to assume 2,400,000 shares of 4.375% Series A Preferred Stock with a liquidation preference of $60,000,000 and 2,400,000 shares of 4.75% Series B Preferred Stock with a liquidation preference of $60,000,000 were outstanding for the entire 12 months of operations after June 30, 2023. (6) Interest and fees on borrowings in the table reflect the cost to the Fund of borrowings, expressed as a percentage of the Fund’s net assets as of June 30, 2023, using the average interest rates in effect during the fiscal year ended June 30, 2023 (7) “Other Expenses” are based on estimated amounts for the Fund’s current fiscal year. (8) The “Acquired Fund Fees and Expenses” are based on the expense ratios for the most recent fiscal year of the Underlying Funds (defined below) in which the Fund has invested, which may change substantially over time and, therefore, significantly affect “Acquired fund fees and expenses.” These amounts are based on the total expense ratio disclosed in each Underlying Fund’s most recent shareholder report.
Other Annual Expenses [Abstract]
Expense Example [Table Text Block]											Example (9) The following example illustrates the expenses that you would pay on a $1,000 investment in Common Shares in the offering, assuming (1) that the Fund incurs total annual expenses of 4.95% of its net assets in years 1 through 10 and (2) a 5% annual return 1 year 3 years 5 years 10 years Total Expenses Incurred $50 $149 $248 $496 The example should not be considered a representation of future expenses. Actual expenses may be greater or less than those assumed. (9) The example should not be considered a representation of future expenses and includes the expenses of the offering. The example assumes that the estimated “Other Expenses” set forth in the table are accurate, that all dividends and distributions are reinvested at the Common Share net asset value (“NAV”) and that the Fund is engaged in leverage of 35% of Managed Assets. Actual expenses may be greater or less than those assumed. Moreover, the Fund’s actual rate of return may be greater or less than the hypothetical 5% annual return shown in the example.
Other Expenses, Note [Text Block]											“Other Expenses” are based on estimated amounts for the Fund’s current fiscal year.
Management Fee not based on Net Assets, Note [Text Block]											The management fee is charged as a percentage of the Fund’s average daily Managed Assets, as opposed to net assets.
Acquired Fund Fees and Expenses, Note [Text Block]											The “Acquired Fund Fees and Expenses” are based on the expense ratios for the most recent fiscal year of the Underlying Funds (defined below) in which the Fund has invested, which may change substantially over time and, therefore, significantly affect “Acquired fund fees and expenses.” These amounts are based on the total expense ratio disclosed in each Underlying Fund’s most recent shareholder report.
Financial Highlights [Abstract]
Senior Securities Amount											$ 120,000
Senior Securities Averaging Method, Note [Text Block]											The asset coverage ratio for a class of senior securities representing stock is calculated as the Fund's total assets, less all liabilities and indebtedness not represented by the Fund's senior securities, divided by secured senior securities representing indebtedness plus the aggregate of the involuntary liquidation preference of secured senior securities which are stock. With respect to the Preferred Stock, the asset coverage per unit figure is expressed in terms of dollar amounts per share of outstanding Preferred Stock (based on a liquidation preference of $25).
General Description of Registrant [Abstract]
Investment Objectives and Practices [Text Block]											Investment Objectives There have been no changes in the Fund’s investment objectives since the prior disclosure date that have not been approved by shareholders. The Fund’s investment objective is current income and overall total return. Principal Investment Strategies and Policies There have been no changes in the Fund’s Principal Investment Strategies and Policies since the prior disclosure date. The Fund seeks to achieve its investment objective by allocating its Managed Assets between the three principal strategies described below. The Adviser determines the portion of the Fund’s Managed Assets to allocate to each strategy and may, from time to time, adjust the allocations. Tactical Closed-End Fund Income Strategy. Under normal market conditions: (i) no more than 20% of the Fund’s Managed Assets allocated to the Tactical Closed-End Fund Income Strategy is invested in “equity” Underlying Funds; (ii) no more than 60% of the Fund’s Managed Assets allocated to the Tactical Closed-End Fund Income Strategy is invested in below investment grade (also known as “high yield” and “junk”) and “senior loan” Underlying Funds; and (iii) no more than 25% of the Fund’s Managed Assets allocated to the Tactical Closed-End Fund Income Strategy is invested in “emerging market income” Underlying Funds. The Fund will also limit its investments in CEFs (including BDCs) that have been in operation for less than one year to no more than 10% of the Fund’s Managed Assets allocated to the Tactical Closed-End Fund Income Strategy. The Fund will not invest in inverse ETFs or leveraged ETFs. The types of Underlying Funds referenced in this paragraph are categorized in accordance with the fund categories established and maintained by Morningstar, Inc. The investment parameters stated above (and elsewhere in this disclosure) apply only at the time of purchase. The Fund’s shareholders indirectly bear the expenses, including the management fees, of the Underlying Funds. The Underlying Funds in which the Adviser seeks to invest will generally focus on a broad range of fixed income securities or sectors, including Underlying Funds that invest in the following securities or sectors: convertible securities, preferred stocks, high yield securities, exchange-traded notes, structured notes, dividend strategies, covered call option strategies, real estate-related investments, energy, utility and other income-oriented strategies. In addition, the Fund may invest directly in debt securities issued by certain credit-oriented, unlisted Underlying Funds, including BDCs, identified by the Adviser in its due diligence process (“Private Debt”). The Adviser believes investments in Private Debt can provide the Fund with the opportunity to obtain more favorable terms than similar publicly traded debt investments with similar risk profiles. The Fund may invest in Underlying Funds that invest in securities that are rated below investment grade, including those receiving the lowest ratings from S&P ® The Underlying Funds in which the Fund invests will not include those that are advised or subadvised by the Adviser, the Subadviser or their affiliates. Under normal circumstances, the Fund intends to maintain long positions in Underlying Funds and other portfolio securities; however, the Fund may at times establish hedging positions. Hedging positions may include short sales and derivatives, such as options, futures and swaps (“Hedging Positions”). Under normal market conditions, no more than 30% of the Fund’s Managed Assets is in Hedging Positions (as determined based on the market value of such Hedging Positions). A short sale is a transaction in which the Fund sells a security that it does not own in anticipation of a decline in the market price of the security. The Fund will not engage in any short sales of securities issued by CEFs and BDCs. To complete the short sale, the Fund must arrange through a broker to borrow the security in order to deliver it to the buyer. The Fund is obligated to replace the borrowed security by purchasing it at a market price at or prior to the time it must be returned to the lender. The price at which the Fund is required to replace the borrowed security may be more or less than the price at which the security was sold by the Fund. The Fund will incur a loss if the price of the security sold short increases between the date of the short sale and the date on which the Fund replaces the borrowed security. The Fund will realize a gain if the price of the security declines between those dates. Under the Tactical Closed-End Fund Income Strategy, the Fund also may attempt to enhance the return on the cash portion of its portfolio by investing in total return swap agreements. A total return swap agreement provides the Fund with a return based on the performance of an underlying asset, in exchange for fee payments to a counterparty based on a specific rate. The difference in the value of these income streams is recorded daily by the Fund, and is typically settled in cash at least monthly. If the underlying asset declines in value over the term of the swap, the Fund would be required to pay the dollar value of that decline plus any applicable fees to the counterparty. The Fund may use its own NAV or any other reference asset that the Adviser chooses as the underlying asset in a total return swap. The Fund will limit the notional amount of all total return swaps in the aggregate to 15% of the Fund’s Managed Assets. Using the Fund’s own NAV as the underlying asset in the total return swap serves to reduce cash drag (the impact of cash on the Fund’s overall return) by replacing it with the impact of market exposure based upon the Fund’s own investment holdings. This type of total return swap would provide the Fund with a return based on its NAV. Like any total return swap, the Fund would be subject to counterparty risk and the risk that its own NAV declines in value. The Fund anticipates that its SPAC investments will be primarily composed of: (i) units issued by SPACs comprised of common stock and warrants to purchase common stock; (ii) common stock issued by SPACs, including “founder” shares; and (iii) warrants to purchase common stock, including “founder” warrants. In addition, the Fund’s SPAC investments could also consist of debt instruments issued by SPACs; securities of other investment companies that primarily invest in SPACs; and securities of SPACs that have completed a business combination transaction with an operating company within the last two calendar years. The Fund’s SPAC investments may be obtained (among other means) through initial public offerings (“IPOs”) of SPACs; secondary market transactions; private placements, including private investment in public equity (“PIPE”) transactions and investments in vehicles formed by SPAC sponsors to hold founder shares and founder warrants; and/or forward purchase agreements pursuant to which investors commit to purchasing a SPAC’s securities to the extent the SPAC requires additional funding at the time of a business combination. Through its investments in SPACs, the Fund will seek to (i) obtain attractive risk-adjusted investment returns, and (ii) derive value from buying and selling SPAC securities to take advantage of pricing discrepancies in the SPAC market (e.g., the difference between the price of a SPAC security and the pro rata value of the SPAC’s trust account). The SPACs in which the Adviser may invest may focus on a broad range of industries and sectors and may generally pursue initial business combinations in any business, industry or geographic location, including outside of the United States. Certain SPACs may seek acquisitions only in limited industries or regions, which may increase the volatility of their securities’ prices. Opportunistic Income Strategy. Under this strategy, the Fund may invest in securities of any credit quality, including, without limit, securities that are rated below investment grade, except that the Fund invests at least 20% of the Managed Assets allocated to this strategy in securities rated investment grade (or unrated securities judged by the Subadviser to be of comparable quality). In addition, the Subadviser does not currently expect that the Fund will invest more than 15% of the Managed Assets allocated to this strategy in corporate debt securities (excluding mortgage-backed securities) or sovereign debt instruments rated below B-by Moody’s and below B3 by S&P or Fitch (or unrated securities determined by the Subadviser to be of comparable quality). The Fund’s investments in below investment grade securities under this strategy may include securities receiving the lowest ratings from S&P (i.e., D-), Fitch (i.e., D-) or Moody’s (i.e., C3), or comparably rated by another NRSRO or, if unrated, determined by the Adviser or Subadviser to be of comparable credit quality, which indicates that the security is in default or has little prospect for full recovery of principal or interest. Below investment grade securities are commonly referred to as “junk” and “high yield” securities. Below investment grade securities are considered speculative with respect to the issuer’s capacity to pay interest and repay principal. Lower rated below investment grade securities are considered more vulnerable to nonpayment than other below investment grade securities and their issuers are more dependent on favorable business, financial and economic conditions to meet their financial commitments. The lowest rated below investment grade securities are typically already in default. The Fund invests no more than 20% of its Managed Assets allocated to the Opportunistic Income Strategy in non-U.S. investments, including emerging market investments. Investments under the Opportunistic Income Strategy may include, without limitation as to the Fund’s Managed Assets allocated to this strategy, mortgage-backed securities, including agency and non-agency residential mortgage-backed securities (“RMBS”). These RMBS investments have undergone extreme volatility over the past several years, driven primarily by high default rates and the securities being downgraded to “junk” status. Investments under the Opportunistic Income Strategy may include mortgage- or asset-backed securities of any kind, including, by way of example, mortgage- or asset-related securities not subject to the credit support of the U.S. Government or any agency or instrumentality of the U.S. Government, including obligations backed or supported by sub-prime mortgages, which are subject to certain special risks. Mortgage- or asset-backed securities may include, among other things, securities issued or guaranteed by the United States Government, its agencies, or its instrumentalities or sponsored corporations, or securities of domestic or foreign private issuers. Mortgage- or asset-backed securities may be issued or guaranteed by banks or other financial institutions, special-purpose vehicles established for such purpose, or private issuers, or by government agencies or instrumentalities. Privately issued mortgage- backed securities include any mortgage-backed security other than those issued or guaranteed as to principal or interest by the U.S. Government or its agencies or instrumentalities. Mortgage-backed securities may include, without limitation, interests in pools of residential mortgages or commercial mortgages, and may relate to domestic or non-U.S. mortgages. Mortgage-backed securities include, but are not limited to, securities representing interests in, collateralized or backed by, or whose values are determined in whole or in part by reference to any number of mortgages or pools of mortgages or the payment experience of such mortgages or pools of mortgages, including Real Estate Mortgage Investment Conduits (“REMICs”), which could include resecuritizations of REMICs, mortgage pass-through securities, inverse floaters, collateralized mortgage obligations, collateralized loan obligations, collateralized debt obligations, multiclass pass-through securities, private mortgage pass-through securities, stripped mortgage securities (generally interest-only and principal-only securities), and securitizations of various receivables, including, for example, credit card and automobile finance receivables. Certain mortgage-backed securities in which the Fund may invest may represent an inverse interest-only class of security for which the holders are entitled to receive no payments of principal and are entitled only to receive interest at a rate that will vary inversely with a specified index or reference rate, or a multiple thereof. The Fund may purchase other types of debt securities and other income-producing investments of any kind, including, by way of example, U.S. Government securities; debt securities issued by domestic or foreign corporations; obligations of foreign sovereigns or their agencies or instrumentalities; equity, mortgage, or hybrid REIT securities; bank loans (including, among others, participations, assignments, senior loans, delayed funding loans and revolving credit facilities); municipal securities and other debt securities issued by states or local governments and their agencies, authorities and other government- sponsored enterprises. Alternative Credit Strategy. The Alternative Credit in which the Fund typically invests are newly issued and/or current as to interest and principal payments at the time of investment. Unless the context suggests otherwise, all references to loans generally refer to Alternative Credit. Alternative Credit Instruments are generally not rated by the nationally recognized statistical rating organizations (“NRSROs”). The Alternative Credit Instruments in which the Fund may invest may have varying degrees of credit risk. There can be no assurance that payments due on underlying Alternative Credit investments will be made. At any given time, the Fund’s portfolio may be substantially illiquid and subject to increased credit and default risk. If a borrower is unable to make its payments on a loan, the Fund may be greatly limited in its ability to recover any outstanding principal and interest under such loan. The Adviser believes that the recent and continuing growth of the online and mobile alternative credit industry has created a relatively untapped and attractive investment opportunity, with the potential for large returns. The Adviser seeks to capitalize on this opportunity by participating in the evolution of this industry, which has served as an alternative to, and has begun to take market share from, the more traditional lending operations of large commercial banks. The ability of borrowers to obtain loans through alternative credit with interest rates that may be lower than those otherwise available to them (or to obtain loans that would otherwise be unavailable to them) has contributed to the significant rise of the use of Alternative Credit. At the same time, alternative credit has also enabled investors to purchase or invest in loans with interest rates and credit characteristics that can offer attractive returns. In selecting the Fund’s Alternative Credit investments, the Adviser employs a bottom-up approach to evaluate the expected returns of loans by loan segment (e.g., consumer, SME and student loans) and by platform origination (as discussed below), as well as a top-down approach to seek to identify investment opportunities across the various segments of the alternative credit industry. In doing so, the Adviser conducts an analysis of each segment’s anticipated returns relative to its associated risks, which takes into consideration for each segment duration, scheduled amortization, seniority of the claim of the loan, prepayment terms and prepayment expectations, current coupons and trends in coupon pricing, origination fees, servicing fees and anticipated losses based on historical performance of similar credit instruments. The Adviser then seeks to allocate Fund assets to the segments identified as being the most attractive on a risk-adjusted return basis. Within each segment, the Adviser conducts a platform-specific analysis, as opposed to a loan-specific analysis, and, as such, the Adviser’s investment process does not result in a review of each individual Alternative Credit investment to which the Fund has investment exposure. Instead, the Adviser generally seeks loans that have originated from platforms that have met the Adviser’s minimum requirements related to, among other things, loan default history and overall borrower credit quality. In this regard, the Adviser engages in ongoing due diligence process of each platform to assess, among other things, the viability of the platform to sustain its business for the foreseeable future; whether the platform has the appropriate expertise, ability and operational systems to conduct its business; the financial condition and outlook of the platform; and the platform’s ability to manage regulatory, business and operational risk. In conducting such due diligence, the Adviser has access to, and reviews, the platform’s credit models as well. As part of the foregoing due diligence efforts, the Adviser monitors on an ongoing basis the underwriting quality of each platform through which it invests in Alternative Credit, including (i) an analysis of the historical and ongoing “loan tapes” that includes loan underwriting data and actual payment experience for all individual loans originated by the platform since inception that are comparable to the loans purchased, or to be purchased, by the Fund, (ii) reviews of the credit model used in the platform’s underwriting processes, including with respect to the assignment of credit grades by the platform to its Alternative Credit and the reconciliation of the underlying data used in the model, (iii) an assessment of any issues identified in the underwriting of the Alternative Credit and the resulting remediation efforts of the platform to address such issues, and (iv) a validation process to confirm that loans purchased by the Fund conform with the terms and conditions of any applicable purchase agreement entered into with the platform. Although the Adviser does not review each individual Alternative Credit investment prior to investment, it is able to impose minimum quantitative and qualitative criteria on the loans in which it will invest by limiting the Fund’s loans to the loan segments and platforms selected by the Adviser, as noted above. In effect, the Adviser adopts the minimum investment criteria inherent in a loan segment or imposed by a platform that it has identified as having the appropriate characteristics for investment. Furthermore, each platform assigns the Alternative Credit it originates a platform-specific credit grade reflecting the potential risk-adjusted return of the loan, which may be based on various factors such as: (i) the term, interest rate and other characteristics of the loans; (ii) the location of the borrowers; (iii) if applicable, the purpose of the loans within the platform (e.g., consumer, SME or student loans); and (iv) the credit and risk profile of the borrowers, including, without limitation (to the extent applicable based on the type of loan), the borrower’s annual income, debt-to-income ratio, credit score (e.g., FICO score), delinquency rate and liens. In purchasing Alternative Credit from a platform, the Fund provides the applicable platform with instructions as to which platform credit grades are eligible for purchase (or, conversely, which platform credit grades are ineligible for Fund purchase). The Adviser performs an ongoing analysis of each of the criteria within a platform’s credit grades to determine historical and predicted prepayment, charge-off, delinquency and recovery rates acceptable to the Adviser. While, under normal circumstances, the Adviser does not provide instructions to the platforms as to any individual criterion used to determine platform-specific grades prior to purchasing Alternative Credit (except as noted below), the Adviser does retain the flexibility to provide more specific instructions (e.g., term; interest rate; geographic location of borrower) if the Adviser believes that investment circumstances dictate any such further instructions. Specifically, the Adviser instructs platforms that the Fund will not purchase any Alternative Credit that are of “subprime quality” (as determined at the time of investment). Although there is no specific legal or market definition of subprime quality, it is generally understood in the industry to signify that there is a material likelihood that the loan will not be repaid in full. The Fund considers an SME loan to be of “subprime quality” if the likelihood of repayment on such loan is determined by the Adviser based on its due diligence and the credit underwriting policies of the originating platform to be similar to that of consumer loans that are of subprime quality. In determining whether an SME loan is of subprime quality, the Adviser generally looks to a number of borrower-specific factors, which will include the payment history of the borrower and, as available, financial statements, tax returns and sales data. The Adviser will not invest the Fund’s assets in loans originated by platforms for which the Adviser cannot evaluate to its satisfaction the completeness and accuracy of the individual Alternative Credit investment data provided by such platform relevant to determining the existence and valuation of such Alternative Credit investment and utilized in the accounting of the loans (i.e., in order to select a platform, the Adviser must assess that it believes all relevant loan data for all loans purchased from the platform is included and correct). The Adviser significantly relies on borrower credit information provided by the platforms through which they make the Fund’s investments. In addition, the Adviser has adopted various protections for itself, including a business continuity plan which provides procedures related to the recovery and restoration of its business, particularly with respect to any critical functions and systems of the Adviser, following an interruption in service or disaster. “Managed Assets” means the total assets of the Fund, including assets attributable to leverage, minus liabilities (other than debt representing leverage and any preferred stock that may be outstanding). In addition to the foregoing principal investment strategies of the Fund, the Adviser also may allocate the Fund’s Managed Assets among cash and short-term investments. There are no limits on the Fund’s portfolio turnover, and the Fund may buy and sell securities to take advantage of potential short-term trading opportunities without regard to length of time and when the Adviser or Subadviser believes investment considerations warrant such action. Unless otherwise specified, the investment policies and limitations of the Fund are not considered to be fundamental by the Fund and can be changed without a vote of the common shareholders. The Fund’s investment objective and certain investment restrictions specifically identified as such in the Fund’s Statement of Additional Information are considered fundamental and may not be changed without the approval of the holders of a majority of the outstanding voting securities of the Fund, as defined in the 1940 Act, which includes common shares and Preferred Shares, if any, voting together as a single class, and the holders of the outstanding Preferred Shares, if any, voting as a single class.
Risk Factors [Table Text Block]											Risk Factors Investing in the Fund involves certain risks relating to its structure and investment objective. You should carefully consider these risk factors, together with all of the other information included in this report, before deciding whether to make an investment in the Fund. An investment in the Fund may not be appropriate for all investors, and an investment in the Common Shares of the Fund should not be considered a complete investment program. The risks set forth below are not the only risks of the Fund, and the Fund may face other risks that have not yet been identified, which are not currently deemed material or which are not yet predictable. If any of the following risks occur, the Fund’s financial condition and results of operations could be materially adversely affected. In such case, the Fund’s NAV and the trading price of its securities could decline, and you may lose all or part of your investment. Certain risk factors included below have been updated since the prior disclosure date to reflect certain non-material updates. Investment-Related Risks: With the exception of Underlying Fund risk (and except as otherwise noted below), the following risks apply to the direct investments the Fund may make, and generally apply to the Fund’s investments in Underlying Funds. That said, each risk described below may not apply to each Underlying Fund. Investment and Market Risks. Management Risks. Fixed Income Securities Risks. Issuer Risk. Credit Risk. . High Yield Securities/Junk Bond Risk. Interest Rate Risk. Interest rates in the United States and many other countries have risen in recent periods and may continue to rise in the future. Additionally, as a result of increasing interest rates, reserves held by banks and other financial institutions in bonds and other debt securities could face a significant decline in value relative to deposits and liabilities, which coupled with general economic headwinds resulting from a changing interest rate environment, creates liquidity pressures at such institutions, as evidenced by the bank run on the Silicon Valley Bank Financial Group (“SVB”) causing it to be placed into receivership. As a result, certain sectors of the credit markets could experience significant declines in liquidity, and it is possible that the Fund (or an Investment Fund) will not be able to manage this risk effectively. It is yet to be determined how the bank run on SVB will fully impact the overall performance of the Fund or one or more of its portfolio investments and how similar events may affect the ability of the Fund to execute its investment strategy. LIBOR Risk. SOFR Risk. Because SOFR is a financing rate based on overnight secured funding transactions, it differs fundamentally from LIBOR. LIBOR was intended to be an unsecured rate that represents interbank funding costs for different short-term maturities or tenors. It was a forward-looking rate reflecting expectations regarding interest rates for the applicable tenor. Thus, LIBOR was intended to be sensitive, in certain respects, to bank credit risk and to term interest rate risk. In contrast, SOFR is a secured overnight rate reflecting the credit of U.S. Treasury securities as collateral. Thus, it is largely insensitive to credit-risk considerations and to short-term interest rate risks. SOFR is a transaction-based rate, and it has been more volatile than other benchmark or market rates, such as three-month LIBOR, during certain periods. For these reasons, among others, there is no assurance that SOFR, or rates derived from SOFR, will perform in the same or similar way as LIBOR would have performed at any time, and there is no assurance that SOFR-based rates will be a suitable substitute for LIBOR. SOFR has a limited history, having been first published in April 2018. The future performance of SOFR, and SOFR-based reference rates, cannot be predicted based on SOFR’s history or otherwise. Levels of SOFR in the future, including following the discontinuation of LIBOR, may bear little or no relation to historical levels of SOFR, LIBOR or other rates. The inclusion of SOFR Risk is a change since the prior disclosure date. Mortgage-Backed Securities Risks. Credit and Market Risks of Mortgage-Backed Securities. Prepayment and Extension Risk of Mortgage-Backed Securities: . Illiquidity Risk of Mortgage-Backed Securities and Mortgage Markets. Commercial Mortgage-Backed Securities. Collateralized Mortgage Obligations. Residual and Equity Tranches. Adjustable Rate Mortgages. Interest and Principal Only Securities Risk. Mortgage Market/Sub-Prime Risk. Corporate Debt Securities Risk. Credit and Below Investment Grade Securities Risks. Tactical Municipal Closed-End Fund Strategy Risk. In fact, it is possible that this market discount may increase and the Fund may suffer realized or unrealized capital losses due to further decline in the market price of the securities of such CEFs, thereby adversely affecting the NAV of the Fund’s Common Shares. Similarly, there can be no assurance that any shares of a CEF purchased by the Fund at a premium will continue to trade at a premium or that the premium will not decrease subsequent to a purchase of such shares by the Fund. The Fund may invest in BDCs as a principal part of the Tactical Closed-End Fund Strategy. BDCs generally invest in less mature U.S. private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly traded companies. While BDCs are expected to generate income in the form of dividends, certain BDCs during certain periods of time may not generate such income. A BDC may make investments with a larger amount of risk of volatility and loss of principal than other investment options and may also be highly speculative and aggressive. Underlying Fund Risks. The Fund’s NAV will fluctuate in response to changes in the NAVs of the Underlying Funds in which it invests and will be particularly sensitive to the risks associated with each of the Underlying Funds. Shareholders will bear additional layers of fees and expenses with respect to the Fund’s investments in Underlying Funds because each of the Fund and the Underlying Fund will charge fees and incur separate expenses, which may be magnified if the Underlying Funds use leverage. The Fund’s investments in Underlying Funds may be restricted by certain provisions of the 1940 Act. Under Section 12(d)(1)(A) of the 1940 Act, the Fund may hold securities of an Underlying Fund in amounts which (i) do not exceed 3% of the total outstanding voting stock of the Underlying Fund, (ii) do not exceed 5% of the value of the Fund’s total assets and (iii) when added to all other Underlying Fund securities held by the Fund, do not exceed 10% of the value of the Fund’s total assets. Under Section 12(d)(1)(C) of the 1940 Act, the Fund, together with any other investment companies for which the Adviser acts as an investment adviser, may not, in the aggregate, own more than 10% of the total outstanding voting stock of a registered closed-end investment company. Section 12(d)(1)(F) of the 1940 Act provides that the limitations of Section 12(d)(1) described above shall not apply to securities purchased or otherwise acquired by the Fund if (i) immediately after such purchase or acquisition not more than 3% of the total outstanding stock of such Underlying Fund is owned by the Fund and all affiliated persons of the Fund, and (ii) certain requirements are met with respect to sales charges. In addition, Rule 12d1-4 under the 1940 Act (“Rule 12d1-4”), effective as of January 19, 2022, permits the Fund to invest in Underlying Funds beyond the limitations of Section 12(d)(1) described above, subject to various conditions, including that the Fund enter into an investment agreement with the Underlying Fund (which agreements may impose additional conditions on the Fund). In matters upon which the Fund is solicited to vote as a shareholder of an Underlying Fund, the Adviser may be required to vote Underlying Fund shares in the same proportion as shares held by other shareholders of the Underlying Fund. SPAC Risks. The officers and directors of a SPAC may operate multiple SPACs and could have conflicts of interest in determining to which SPAC a particular business opportunity should be presented. In such circumstances, there can be no assurance that a given business opportunity would be presented to the SPAC in which the Fund holds an investment. Private Debt Risk. Defaulted and Distressed Securities Risks. Loan Risk. Asset-Backed Securities Risk. Certain asset-backed securities do not have the benefit of the same security interest in the related collateral as do mortgage-backed securities; nor are they provided government guarantees of repayment. Credit card receivables are generally unsecured, and the debtors are entitled to the protection of a number of state and federal consumer credit laws, many of which give such debtors the right to set off certain amounts owed on the credit cards, thereby reducing the balance due. In addition, some issuers of automobile receivables permit the servicers to retain possession of the underlying obligations. If the servicer were to sell these obligations to another party, there is a risk that the purchaser would acquire an interest superior to that of the holders of the related automobile receivables. The impairment of the value of assets (tangible or intangible) underlying an asset-backed security, such as a result of non-payment of loans or non-performance of other collateral or underlying assets, may result in a reduction in the value of such asset-backed securities and losses to the Fund. Illiquid Securities Risks. Micro-, Small- and Medium-Sized Company Risks. Collateralized Debt Obligations Risk. REIT Risks. Equity Securities Risk. Preferred Stock Risk. Warrants Risks. Derivatives Risks. Derivatives may entail investment exposures that are greater than their cost would suggest, meaning that a small investment in a derivative could have a large potential impact on the performance of the Fund or an Underlying Fund. The Fund or an Underlying Fund could experience a loss if derivatives do not perform as anticipated, if they are not correlated with the performance of other investments which they are used to hedge or if the fund is unable to liquidate a position because of an illiquid secondary market. Except with respect to the Fund’s investments in total return swaps, the Fund expects its use of derivative instruments will be for hedging purposes. When used for speculative purposes, derivatives will produce enhanced investment exposure, which will magnify gains and losses. The Fund and the Underlying Funds also will be subject to credit risk with respect to the counterparties to the derivatives contracts purchased by such fund. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract, the Fund or an Underlying Fund may obtain only a limited recovery or may obtain no recovery in such circumstances. Options and Futures Risks. Swap Risks. Short Sale Risks. A Reverse Repurchase Agreements Risks. Foreign Investing Risk. Currency Risk. Emerging Markets Risk. Sovereign Debt Obligation Risk. U.S. Government Securities Risk. Municipal Securities Risk. Structured Notes Risk. Rating Agency Risk. Legislation and Regulatory Risks. Market Disruption, Geopolitical and Climate Change Risks. In February 2022, Russia commenced a military attack on Ukraine. The outbreak of hostilities between the two countries and the threat of wider-spread hostilities could have a severe adverse effect on the region and global economies, including significant negative impacts on the markets for certain securities and commodities, such as oil and natural gas. In addition, sanctions imposed on Russia by the United States and other countries, and any sanctions imposed in the future, could have a significant adverse impact on the Russian economy and related markets. The price and liquidity of investments may fluctuate widely as a result of the conflict and related events. How long the armed conflict and related events will last cannot be predicted. These tensions and any related events could have a significant impact on Fund performance and the value of Fund investments. Climate change poses long-term threats to physical and biological systems. Potential hazards and risks related to climate change for a State or municipality include, among other things, wildfires, rising sea levels, more severe coastal flooding and erosion hazards, and more intense storms. Storms in recent years have demonstrated vulnerabilities in a State's or municipality's infrastructure to extreme weather events. Climate change risks, if they materialize, can adversely impact a State's or municipality's financial plan in current or future years. In addition, economists and others have expressed increasing concern about the potential effects of global climate change on property and security values. A rise in sea levels, an increase in powerful windstorms and/or a climate-driven increase in sea levels or flooding could cause coastal properties to lose value or become unmarketable altogether. Economists warn that, unlike previous declines in the real estate market, properties in affected coastal zones may not ever recover their value. Large wildfires driven by high winds and prolonged drought may devastate businesses and entire communities and may be very costly to any business found to be responsible for the fire. Regulatory changes and divestment movements tied to concerns about climate change could adversely affect the value of certain land and the viability of industries whose activities or products are seen as accelerating climate change. These losses could adversely affect the bonds of municipalities that depend on tax or other revenues and tourist dollars generated by affected properties, and insurers of the property and/or of municipal securities. Since property and security values are driven largely by buyers' perceptions, it is difficult to know the time period over which these market effects might unfold. Since the prior disclosure date, the Fund has added the risk and disclosures related to climate change. Pandemic Risk. Defensive Measures. Alternative Credit and Pass-Through Notes Risk. Platform Concentration Risk. Platform Reliance Risk. Structural Risks: Market Discount. . Investment Style Risk. Multi-Manager Risk. Asset Allocation Risk. Leverage Risks. Potential Conflicts of Interest Risk. Stockholder Activism. Cybersecurity Risk. Anti-Takeover Provisions. Risks Associated with Additional Offerings. In the event any additional series of fixed rate preferred shares are issued and such shares are intended to be listed on an exchange, prior application will have been made to list such shares. During an initial period, which is not expected to exceed 30 days after the date of its initial issuance, such shares may not be listed on any securities exchange. During such period, the underwriters may make a market in such shares, although they will have no obligation to do so. Consequently, an investment in such shares may be illiquid during such period. Fixed rate preferred shares may trade at a premium to or discount from liquidation value. There are risks associated with an offering of Rights (in addition to the risks discussed herein related to the offering of shares and preferred shares). Shareholders who do not exercise their rights may, at the completion of such an offering, own a smaller proportional interest in the Fund than if they exercised their rights. As a result of such an offering, a shareholder may experience dilution in NAV per share if the subscription price per share is below the NAV per share on the expiration date. In addition to the economic dilution described above, if a shareholder does not exercise all of their Rights, the shareholder will incur voting dilution as a result of the Rights offering. This voting dilution will occur because the shareholder will own a smaller proportionate interest in the Fund after the rights offering than prior to the Rights offering. There is a risk that changes in market conditions may result in the underlying common shares or preferred shares purchasable upon exercise of Rights being less attractive to investors at the conclusion of the subscription period. This may reduce or eliminate the value of the Rights. If investors exercise only a portion of the rights, the number of shares issued may be reduced, and the shares may trade at less favorable prices than larger offerings for similar securities. Rights issued by the Fund may be transferable or non-transferable rights. Secondary Market for the Common Shares.
Effects of Leverage [Text Block]											Effects of Leverage. The following table is furnished in response to requirements of the SEC. It is designed to illustrate the effect of leverage on total return assuming investment portfolio returns (comprised of income and changes in the value of securities held in the Fund’s portfolio net of expenses) of -10%, -5%, 0%, 5% and 10%. These assumed investment portfolio returns are hypothetical figures and are not necessarily indicative of the investment portfolio returns experienced or expected to be experienced by the Fund. Assumed Portfolio Return -10.00% -5.00% 0.00% 5.00% 10.00% Common Share Total Return -17.92% -10.20% -2.48% 5.24% 12.96% Total return is composed of two elements—the dividends on shares paid by the Fund (the amount of which is largely determined by the Fund’s net investment income after paying the cost of leverage) and realized and unrealized gains or losses on the value of the securities the Fund owns. As the table shows, leverage generally increases the return to shareholders when portfolio return is positive or greater than the costs of leverage and decreases return when the portfolio return is negative or less than the costs of leverage. During the time in which the Fund is using leverage, the amount of the fees paid to the Adviser (and from the Adviser to the Subadviser) for investment management services (and subadvisory services) is higher than if the Fund did not use leverage because the fees paid are calculated based on the Fund’s Managed Assets. This may create a conflict of interest between the Adviser and the Subadviser, on the one hand, and common shareholders, on the other. Also, because the leverage costs are borne by the Fund at a specified interest rate, only the Fund’s common shareholders bear the cost of the Fund’s management fees and other expenses. There can be no assurance that a leveraging strategy will be successful during any period in which it is employed.
Effects of Leverage [Table Text Block]											Assumed Portfolio Return -10.00% -5.00% 0.00% 5.00% 10.00% Common Share Total Return -17.92% -10.20% -2.48% 5.24% 12.96%
Effects of Leverage, Purpose [Text Block]											The following table is furnished in response to requirements of the SEC. It is designed to illustrate the effect of leverage on total return assuming investment portfolio returns (comprised of income and changes in the value of securities held in the Fund’s portfolio net of expenses) of -10%, -5%, 0%, 5% and 10%. These assumed investment portfolio returns are hypothetical figures and are not necessarily indicative of the investment portfolio returns experienced or expected to be experienced by the Fund.
Share Price [Table Text Block]											MARKET PRICE NET ASSET VALUE PREMIUM/(DISCOUNT) TO NET ASSET VALUE Quarter Ended High Low High Low High Low June 30, 2021 $15.95 $14.86 $15.40 $15.22 3.57% -2.37% September 30, 2021 $16.32 $14.55 $15.24 $14.85 7.09% -2.02% December 31, 2021 $15.58 $14.04 $14.77 $14.19 5.48% -1.06% March 31, 2022 $14.77 $12.20 $14.10 $12.80 4.75% -4.69% June 30, 2022 $12.97 $9.71 $12.90 $11.31 0.54% -14.15% September 30, 2022 $12.01 $9.20 $11.35 $10.14 5.81% -9.27% December 31, 2022 $9.77 $8.54 $10.27 $9.80 -4.87% -12.86% March 31, 2023 $9.24 $8.23 $10.18 $9.80 -9.23% -16.02% June 30, 2023 $8.58 $8.08 $9.86 $9.64 -12.98% -16.23%
Investment And Market Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Investment and Market Risks.
Management Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Management Risks.
Fixed Income Securities Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Fixed Income Securities Risks.
Issuer Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Issuer Risk.
Credit Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Credit Risk. .
High Yield Securities Junk Bond Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											High Yield Securities/Junk Bond Risk.
Interest Rate Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Interest Rate Risk. Interest rates in the United States and many other countries have risen in recent periods and may continue to rise in the future. Additionally, as a result of increasing interest rates, reserves held by banks and other financial institutions in bonds and other debt securities could face a significant decline in value relative to deposits and liabilities, which coupled with general economic headwinds resulting from a changing interest rate environment, creates liquidity pressures at such institutions, as evidenced by the bank run on the Silicon Valley Bank Financial Group (“SVB”) causing it to be placed into receivership. As a result, certain sectors of the credit markets could experience significant declines in liquidity, and it is possible that the Fund (or an Investment Fund) will not be able to manage this risk effectively. It is yet to be determined how the bank run on SVB will fully impact the overall performance of the Fund or one or more of its portfolio investments and how similar events may affect the ability of the Fund to execute its investment strategy.
Libor Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											LIBOR Risk.
Sofr Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											SOFR Risk. Because SOFR is a financing rate based on overnight secured funding transactions, it differs fundamentally from LIBOR. LIBOR was intended to be an unsecured rate that represents interbank funding costs for different short-term maturities or tenors. It was a forward-looking rate reflecting expectations regarding interest rates for the applicable tenor. Thus, LIBOR was intended to be sensitive, in certain respects, to bank credit risk and to term interest rate risk. In contrast, SOFR is a secured overnight rate reflecting the credit of U.S. Treasury securities as collateral. Thus, it is largely insensitive to credit-risk considerations and to short-term interest rate risks. SOFR is a transaction-based rate, and it has been more volatile than other benchmark or market rates, such as three-month LIBOR, during certain periods. For these reasons, among others, there is no assurance that SOFR, or rates derived from SOFR, will perform in the same or similar way as LIBOR would have performed at any time, and there is no assurance that SOFR-based rates will be a suitable substitute for LIBOR. SOFR has a limited history, having been first published in April 2018. The future performance of SOFR, and SOFR-based reference rates, cannot be predicted based on SOFR’s history or otherwise. Levels of SOFR in the future, including following the discontinuation of LIBOR, may bear little or no relation to historical levels of SOFR, LIBOR or other rates. The inclusion of SOFR Risk is a change since the prior disclosure date.
Mortgage Backed Securities Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Mortgage-Backed Securities Risks.
Credit And Market Risks Of Mortgage Backed Securities [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Credit and Market Risks of Mortgage-Backed Securities.
Prepayment And Extension Risk Of Mortgage Backed Securities [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Prepayment and Extension Risk of Mortgage-Backed Securities: .
Illiquidity Risk Of Mortgage Backed Securitiesand Mortgage Markets [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Illiquidity Risk of Mortgage-Backed Securities and Mortgage Markets.
Commercial Mortgage Backed Securities [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Commercial Mortgage-Backed Securities.
Collateralized Mortgage Obligations [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Collateralized Mortgage Obligations.
Residual And Equity Tranches [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Residual and Equity Tranches.
Adjustable Rate Mortgages [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Adjustable Rate Mortgages.
Interest And Principal Only Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Interest and Principal Only Securities Risk.
Mortgage Market Sub Prime Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Mortgage Market/Sub-Prime Risk.
Corporate Debt Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Corporate Debt Securities Risk.
Credit And Below Investment Grade Securities Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Credit and Below Investment Grade Securities Risks.
Tactical Municipal Closed End Fund Strategy Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Tactical Municipal Closed-End Fund Strategy Risk. In fact, it is possible that this market discount may increase and the Fund may suffer realized or unrealized capital losses due to further decline in the market price of the securities of such CEFs, thereby adversely affecting the NAV of the Fund’s Common Shares. Similarly, there can be no assurance that any shares of a CEF purchased by the Fund at a premium will continue to trade at a premium or that the premium will not decrease subsequent to a purchase of such shares by the Fund. The Fund may invest in BDCs as a principal part of the Tactical Closed-End Fund Strategy. BDCs generally invest in less mature U.S. private companies or thinly traded U.S. public companies which involve greater risk than well-established publicly traded companies. While BDCs are expected to generate income in the form of dividends, certain BDCs during certain periods of time may not generate such income. A BDC may make investments with a larger amount of risk of volatility and loss of principal than other investment options and may also be highly speculative and aggressive.
Underlying Fund Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Underlying Fund Risks. The Fund’s NAV will fluctuate in response to changes in the NAVs of the Underlying Funds in which it invests and will be particularly sensitive to the risks associated with each of the Underlying Funds. Shareholders will bear additional layers of fees and expenses with respect to the Fund’s investments in Underlying Funds because each of the Fund and the Underlying Fund will charge fees and incur separate expenses, which may be magnified if the Underlying Funds use leverage. The Fund’s investments in Underlying Funds may be restricted by certain provisions of the 1940 Act. Under Section 12(d)(1)(A) of the 1940 Act, the Fund may hold securities of an Underlying Fund in amounts which (i) do not exceed 3% of the total outstanding voting stock of the Underlying Fund, (ii) do not exceed 5% of the value of the Fund’s total assets and (iii) when added to all other Underlying Fund securities held by the Fund, do not exceed 10% of the value of the Fund’s total assets. Under Section 12(d)(1)(C) of the 1940 Act, the Fund, together with any other investment companies for which the Adviser acts as an investment adviser, may not, in the aggregate, own more than 10% of the total outstanding voting stock of a registered closed-end investment company. Section 12(d)(1)(F) of the 1940 Act provides that the limitations of Section 12(d)(1) described above shall not apply to securities purchased or otherwise acquired by the Fund if (i) immediately after such purchase or acquisition not more than 3% of the total outstanding stock of such Underlying Fund is owned by the Fund and all affiliated persons of the Fund, and (ii) certain requirements are met with respect to sales charges. In addition, Rule 12d1-4 under the 1940 Act (“Rule 12d1-4”), effective as of January 19, 2022, permits the Fund to invest in Underlying Funds beyond the limitations of Section 12(d)(1) described above, subject to various conditions, including that the Fund enter into an investment agreement with the Underlying Fund (which agreements may impose additional conditions on the Fund). In matters upon which the Fund is solicited to vote as a shareholder of an Underlying Fund, the Adviser may be required to vote Underlying Fund shares in the same proportion as shares held by other shareholders of the Underlying Fund.
S P A C Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											SPAC Risks. The officers and directors of a SPAC may operate multiple SPACs and could have conflicts of interest in determining to which SPAC a particular business opportunity should be presented. In such circumstances, there can be no assurance that a given business opportunity would be presented to the SPAC in which the Fund holds an investment.
Private Debt Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Private Debt Risk.
Defaulted And Distressed Securities Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Defaulted and Distressed Securities Risks.
Loan Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Loan Risk.
Asset Backed Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Asset-Backed Securities Risk. Certain asset-backed securities do not have the benefit of the same security interest in the related collateral as do mortgage-backed securities; nor are they provided government guarantees of repayment. Credit card receivables are generally unsecured, and the debtors are entitled to the protection of a number of state and federal consumer credit laws, many of which give such debtors the right to set off certain amounts owed on the credit cards, thereby reducing the balance due. In addition, some issuers of automobile receivables permit the servicers to retain possession of the underlying obligations. If the servicer were to sell these obligations to another party, there is a risk that the purchaser would acquire an interest superior to that of the holders of the related automobile receivables. The impairment of the value of assets (tangible or intangible) underlying an asset-backed security, such as a result of non-payment of loans or non-performance of other collateral or underlying assets, may result in a reduction in the value of such asset-backed securities and losses to the Fund.
Illiquid Securities Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Illiquid Securities Risks.
Micro Small And Medium Sized Company Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Micro-, Small- and Medium-Sized Company Risks.
Collateralized Debt Obligations Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Collateralized Debt Obligations Risk.
R E I T Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											REIT Risks.
Equity Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Equity Securities Risk.
Preferred Stock Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Preferred Stock Risk.
Warrants Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Warrants Risks.
Derivatives Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Derivatives Risks. Derivatives may entail investment exposures that are greater than their cost would suggest, meaning that a small investment in a derivative could have a large potential impact on the performance of the Fund or an Underlying Fund. The Fund or an Underlying Fund could experience a loss if derivatives do not perform as anticipated, if they are not correlated with the performance of other investments which they are used to hedge or if the fund is unable to liquidate a position because of an illiquid secondary market. Except with respect to the Fund’s investments in total return swaps, the Fund expects its use of derivative instruments will be for hedging purposes. When used for speculative purposes, derivatives will produce enhanced investment exposure, which will magnify gains and losses. The Fund and the Underlying Funds also will be subject to credit risk with respect to the counterparties to the derivatives contracts purchased by such fund. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract, the Fund or an Underlying Fund may obtain only a limited recovery or may obtain no recovery in such circumstances.
Options And Futures Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Options and Futures Risks.
Swap Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Swap Risks.
Short Sale Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Short Sale Risks. A
Reverse Repurchase Agreements Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Reverse Repurchase Agreements Risks.
Foreign Investing Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Foreign Investing Risk.
Currency Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Currency Risk.
Emerging Markets Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Emerging Markets Risk.
Sovereign Debt Obligation Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Sovereign Debt Obligation Risk.
U S Government Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											U.S. Government Securities Risk.
Municipal Securities Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Municipal Securities Risk.
Structured Notes Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Structured Notes Risk.
Rating Agency Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Rating Agency Risk.
Legislation And Regulatory Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Legislation and Regulatory Risks.
Market Disruption Geopolitical And Climate Change Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Market Disruption, Geopolitical and Climate Change Risks. In February 2022, Russia commenced a military attack on Ukraine. The outbreak of hostilities between the two countries and the threat of wider-spread hostilities could have a severe adverse effect on the region and global economies, including significant negative impacts on the markets for certain securities and commodities, such as oil and natural gas. In addition, sanctions imposed on Russia by the United States and other countries, and any sanctions imposed in the future, could have a significant adverse impact on the Russian economy and related markets. The price and liquidity of investments may fluctuate widely as a result of the conflict and related events. How long the armed conflict and related events will last cannot be predicted. These tensions and any related events could have a significant impact on Fund performance and the value of Fund investments. Climate change poses long-term threats to physical and biological systems. Potential hazards and risks related to climate change for a State or municipality include, among other things, wildfires, rising sea levels, more severe coastal flooding and erosion hazards, and more intense storms. Storms in recent years have demonstrated vulnerabilities in a State's or municipality's infrastructure to extreme weather events. Climate change risks, if they materialize, can adversely impact a State's or municipality's financial plan in current or future years. In addition, economists and others have expressed increasing concern about the potential effects of global climate change on property and security values. A rise in sea levels, an increase in powerful windstorms and/or a climate-driven increase in sea levels or flooding could cause coastal properties to lose value or become unmarketable altogether. Economists warn that, unlike previous declines in the real estate market, properties in affected coastal zones may not ever recover their value. Large wildfires driven by high winds and prolonged drought may devastate businesses and entire communities and may be very costly to any business found to be responsible for the fire. Regulatory changes and divestment movements tied to concerns about climate change could adversely affect the value of certain land and the viability of industries whose activities or products are seen as accelerating climate change. These losses could adversely affect the bonds of municipalities that depend on tax or other revenues and tourist dollars generated by affected properties, and insurers of the property and/or of municipal securities. Since property and security values are driven largely by buyers' perceptions, it is difficult to know the time period over which these market effects might unfold. Since the prior disclosure date, the Fund has added the risk and disclosures related to climate change.
Pandemic Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Pandemic Risk.
Defensive Measures [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Defensive Measures.
Alternative Credit And Pass Through Notes Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Alternative Credit and Pass-Through Notes Risk.
Platform Concentration Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Platform Concentration Risk.
Platform Reliance Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Platform Reliance Risk.
Market Discount [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Market Discount. .
Investment Style Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Investment Style Risk.
Multi Manager Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Multi-Manager Risk.
Asset Allocation Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Asset Allocation Risk.
Leverage Risks [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Leverage Risks.
Potential Conflicts Of Interest Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Potential Conflicts of Interest Risk.
Stockholder Activism [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Stockholder Activism.
Cybersecurity Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Cybersecurity Risk.
Anti Takeover Provisions [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Anti-Takeover Provisions.
Risks Associated With Additional Offerings [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Risks Associated with Additional Offerings. In the event any additional series of fixed rate preferred shares are issued and such shares are intended to be listed on an exchange, prior application will have been made to list such shares. During an initial period, which is not expected to exceed 30 days after the date of its initial issuance, such shares may not be listed on any securities exchange. During such period, the underwriters may make a market in such shares, although they will have no obligation to do so. Consequently, an investment in such shares may be illiquid during such period. Fixed rate preferred shares may trade at a premium to or discount from liquidation value. There are risks associated with an offering of Rights (in addition to the risks discussed herein related to the offering of shares and preferred shares). Shareholders who do not exercise their rights may, at the completion of such an offering, own a smaller proportional interest in the Fund than if they exercised their rights. As a result of such an offering, a shareholder may experience dilution in NAV per share if the subscription price per share is below the NAV per share on the expiration date. In addition to the economic dilution described above, if a shareholder does not exercise all of their Rights, the shareholder will incur voting dilution as a result of the Rights offering. This voting dilution will occur because the shareholder will own a smaller proportionate interest in the Fund after the rights offering than prior to the Rights offering. There is a risk that changes in market conditions may result in the underlying common shares or preferred shares purchasable upon exercise of Rights being less attractive to investors at the conclusion of the subscription period. This may reduce or eliminate the value of the Rights. If investors exercise only a portion of the rights, the number of shares issued may be reduced, and the shares may trade at less favorable prices than larger offerings for similar securities. Rights issued by the Fund may be transferable or non-transferable rights.
Secondary Market For The Common Shares [Member]
General Description of Registrant [Abstract]
Risk [Text Block]											Secondary Market for the Common Shares.
Series A Cumulative Preferred Stock [Member]
Financial Highlights [Abstract]
Senior Securities Coverage per Unit											$ 71
Senior Securities Involuntary Liquidating Preference per Unit											25
Senior Securities Average Market Value per Unit											18.59
Series B Cumulative Preferred Stock [Member]
Financial Highlights [Abstract]
Senior Securities Coverage per Unit											71
Senior Securities Involuntary Liquidating Preference per Unit											25
Senior Securities Average Market Value per Unit											$ 19.64
Common Shares [Member]
Fee Table [Abstract]
Sales Load [Percent]	[1]										0%
Dividend Reinvestment and Cash Purchase Fees	[2]										$ 0
Other Transaction Expenses [Abstract]
Other Transaction Expenses [Percent]											0%
Management Fees [Percent]	[3],[4]										1.54%
Interest Expenses on Borrowings [Percent]	[4],[5]										0%
Dividend Expenses on Preferred Shares [Percent]	[4],[6]										2.44%
Acquired Fund Fees and Expenses [Percent]	[4],[7]										0.29%
Other Annual Expenses [Abstract]
Other Annual Expenses [Percent]	[4],[8]										0.68%
Total Annual Expenses [Percent]	[4]										4.95%
Expense Example, Year 01	[9]										$ 50
Expense Example, Years 1 to 3	[9]										149
Expense Example, Years 1 to 5	[9]										248
Expense Example, Years 1 to 10	[9]										$ 496
General Description of Registrant [Abstract]
Return at Minus Ten [Percent]											(17.92%)
Return at Minus Five [Percent]											(10.20%)
Return at Zero [Percent]											(2.48%)
Return at Plus Five [Percent]											5.24%
Return at Plus Ten [Percent]											12.96%
Lowest Price or Bid		$ 8.08	$ 8.23	$ 8.54	$ 9.20	$ 9.71	$ 12.20	$ 14.04	$ 14.55	$ 14.86
Highest Price or Bid		8.58	9.24	9.77	12.01	12.97	14.77	15.58	16.32	15.95
Lowest Price or Bid, NAV		9.64	9.80	9.80	10.14	11.31	12.80	14.19	14.85	15.22
Highest Price or Bid, NAV		$ 9.86	$ 10.18	$ 10.27	$ 11.35	$ 12.90	$ 14.10	$ 14.77	$ 15.24	$ 15.40
Highest Price or Bid, Premium (Discount) to NAV [Percent]		(12.98%)	(9.23%)	(4.87%)	5.81%	0.54%	4.75%	5.48%	7.09%	3.57%
Lowest Price or Bid, Premium (Discount) to NAV [Percent]		(16.23%)	(16.02%)	(12.86%)	(9.27%)	(14.15%)	(4.69%)	(1.06%)	(2.02%)	(2.37%)
[1]If Common Shares are sold to or through underwriters, the Prospectus Supplement will set forth any applicable sales load and the estimated offering expenses borne by the Fund.[2]There will be no brokerage charges with respect to Common Shares issued directly by the Fund under the dividend reinvestment plan. You may pay brokerage charges in connection with open market purchases or if you direct the plan agent to sell your Common Shares held in a dividend reinvestment account.[3] The management fee is charged as a percentage of the Fund’s average daily Managed Assets, as opposed to net assets. The “Acquired Fund Fees and Expenses” are based on the expense ratios for the most recent fiscal year of the Underlying Funds (defined below) in which the Fund has invested, which may change substantially over time and, therefore, significantly affect “Acquired fund fees and expenses.” These amounts are based on the total expense ratio disclosed in each Underlying Fund’s most recent shareholder report. “Other Expenses” are based on estimated amounts for the Fund’s current fiscal year.