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Kinetics Spin-Off and Corporate Restructuring Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Kinetics Spin-off and Corporate Restructuring Fund
Objective [Heading] rr_ObjectiveHeading Investment Objectives
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Kinetics Spin-off and Corporate Restructuring Fund (the “Fund”) seeks to achieve long-term growth of capital.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. You may qualify for sales charge discounts for Advisor Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in Advisor Class A shares of the Kinetics Funds. More information about these and other discounts is available from your financial professional and in the sections titled, “Description of Classes” beginning on page 33 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 51 of the Fund’s statement of additional information.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees(fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination April 30, 2023
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 1% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 1.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees Total Annual Fund Operating Expenses do not correlate to the ratio of operating expenses to average net assets before expense reimbursement found in the “Financial Highlights” section of this Prospectus, which reflects the Fund’s operating expenses and does not include acquired fund fees and expenses (“AFFE”).
Expense Example [Heading] rr_ExpenseExampleHeading Example.
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions your cost would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption You would pay the following expenses if you did not redeem your shares:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategy
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock Under normal market conditions, the Fund will pursue its investment objective by investing at least 80% of its net assets (plus borrowings for investment purposes) in equity securities of spin-off companies, companies subject to other forms of corporate restructuring, parents of any such companies, and publicly traded shareholder activist holding companies which, by way of their shareholder ownership in other companies, have caused such other companies to undergo spin-offs and other forms of corporate restructurings. The Fund is non-diversified. The Fund considers a spin-off company or a company subject to a corporate restructuring to be any company that has experienced one of the following events within five years of the Fund’s investment in the company: a spin-off distribution of stock of a subsidiary company by its parent company to parent company shareholders; an equity “carve-out” or
“partial initial public offering” in which a parent company sells a percentage of the equity of a subsidiary in a public offering; or the parent company of any such company after the public disclosure of the corporate restructuring. The Fund may invest in a parent company of a spin-off company or a company subject to a corporate restructuring, or a publicly traded shareholder activist holding company which has caused such other companies to undergo the spin-off or corporate restructuring, after the public disclosure of the planned spin-off or corporate restructuring, during the spin-off or corporate restructuring process, or after the actual spin-off or corporate restructuring. If the Fund invests in a parent company of a spin-off company or a company subject to a corporate restructuring prior to a spin-off or restructuring, the Fund would, upon the completion of the spin-off or restructuring, receive the shares of the spin-off company. The Fund may retain shares of both the parent and the spin-off company, the shares of only one, or the shares of neither.

The Fund will invest in both U.S. and foreign equity stocks. The Fund’s investments in foreign equity stocks may be in both developed and emerging markets. The Fund’s equity investments may include common stock, preferred stock, securities convertible into common stock, warrants, rights and other equity securities having the characteristics of common stock (such as depositary receipts). The Fund may invest in any size company, including small- and medium-sized companies, and further may invest in companies which are financially distressed.

The Fund may invest up to 20% of its assets in companies that, for a variety of reasons, the Fund’s Investment Adviser believes may have the potential to be subject to a spin-off or corporate restructuring within a reasonable period of time; for example, a similar company may have recently announced a spin-off; the company may be under investor pressure to consider strategic alternatives; or the current segments of the company may not have a synergistic fit, and as a result the company’s stock trades at a discount to that of its closest peers. The Fund may invest in potential spin-off and corporate restructuring companies that the Fund’s Investment Adviser believes may, based on its in-house research, have the most favorable risk/reward characteristics.

The Investment Adviser seeks to avoid short-term investing and significant portfolio turnover. The Investment Adviser utilizes its in-house research capabilities to seek to identify businesses at inflection points in their corporate life cycles with what the Investment Adviser believes are attractive risk/reward profiles. The Investment Adviser believes that returns are often the result of the market’s inefficiency in initially valuing corporate restructurings due in part to lack of coverage by the investment community and initial indiscriminate selling pressure. For instance, companies that have been "spun-off" from their corporate parents by way of corporate restructurings may not be followed closely by financial sector analysts, which could lead to advantageous disparities between a company’s valuation and growth prospects relative to its pricing in the marketplace. The Investment Adviser uses a process that focuses primarily on the analysis of individual companies rather than on the industry in which the company may operate. This “bottom-up” approach may result in multiple investments in the same sector or industry. However, the Investment Adviser pays careful attention to the limitation of sector and industry concentrations.

The Fund may maintain during a temporary period, which could be for a short period or a longer period lasting several years or more, of abnormal conditions, a significant portion of its total assets in cash and securities, generally considered to be cash and cash equivalents, including, but not limited to: high quality, U.S. short-term debt securities and money market instruments.  The Investment Adviser will invest in such short-term cash positions to the extent that the Investment Adviser is unable to find sufficient investments meeting its criteria and when the Adviser believes the purchase of additional equity securities would not further the investment objective of the Fund during such periods of time.  Additionally, to respond to adverse market, economic, political or other conditions, which may persist for
short or long periods of time, the Fund may invest up to 100% of its assets in the types of high quality, U.S. short-term debt securities and money market instruments described above.

If the market advances during periods when the Fund is holding a large cash position, the Fund may not participate as much as it would have if it had been more fully invested in securities. In the aforementioned temporary defensive periods, the Investment Adviser believes that an additional amount of liquidity in the Fund is desirable both to meet operating requirements and to take advantage of new investment opportunities. When the Fund holds a significant portion of assets in cash and cash equivalents, it may not meet its investment objective.

The Fund held 58.7% of its net assets in the Texas Pacific Land Corporation (the “Land Corporation”) as of March 31, 2022. The Land Corporation is a corporation organized under the laws of the state of New York. One of the largest land owners in Texas, the Land Corporation derives most of its income from oil and gas royalty revenue, land easements and water royalties and sales. The Land Corporation has historically operated with minimal operating expenses, little to no debt and utilized cash flow to return capital to unitholders through share repurchases and dividends. While the Land Corporation has held the majority of its assets since its formation in 1888, the development of energy resources subject to its royalty interests and related land use have experienced rapid growth in recent years due to advances in energy exploration and extraction technologies.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Risk is inherent in all investing. A summary description of certain principal risks of investing in the Fund is set forth below. Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money. There can be no assurance that the Fund will achieve its investment objective. The first four risks are prioritized by order of importance. The remaining principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a principal risk of investing in the Fund, regardless of the order in which it appears. Different risks may be more significant at different times depending on market conditions or other factors.

ª    Single Stock Concentration Risk: The Fund may hold a large concentration of its net assets in a single security or issuer. Holding a large concentration in a single security or issuer may expose the Fund to the market volatility of that specific security or issuer if the security or issuer performs worse than the market as a whole, which could adversely affect the Fund’s performance.

ª    Non-Diversification Risk: The Fund is classified as “non-diversified,” which means the Fund may invest a larger percentage of its assets in the securities of a smaller number of issuers than a diversified fund. Investment in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if its assets were diversified among the securities of a greater number of issuers.

ª    Liquidity Risks: The Investment Adviser may not be able to sell portfolio securities at an optimal time or price. The Fund’s significant investment in a single position, makes the Fund especially susceptible to the risk that during certain periods the liquidity of the single position will decrease or disappear suddenly and without warning as a result of adverse market or political events, or adverse investor perceptions.

ª    Sector Concentration Risk: Although the Fund will not concentrate its investments in any industries, the Fund may, at certain times, have concentrations in one or more sectors which may cause the Fund to be more sensitive to economic changes or events occurring in those
sectors, and the Fund’s investments may be more volatile. As of December 31, 2021, the Fund had 54.5% invested in the Oil and Gas Extraction sector.

ª    Convertible Securities Risk: Convertible securities are subject to market and interest rate risk and credit risk. When the market price of the equity security underlying a convertible security decreases the convertible security tends to trade on the basis of its yield and other fixed income characteristics, and is more susceptible to credit and interest rate risks. When the market price of such equity security rises, the convertible security tends to trade on the basis of its equity conversion features and be more exposed to market risk. Convertible securities are typically issued by smaller capitalized companies with stock prices that may be more volatile than those of other companies.
ª    Currency Risk: The values of investments in securities denominated in foreign currencies increase or decrease as the rates of exchange between those currencies and the U.S. dollar change. Currency conversion costs and currency fluctuations could erase investment gains or add to investment losses. Currency exchange rates can be volatile and are affected by factors such as general economic conditions, the actions of the U.S. and foreign governments or central banks, the imposition of currency controls, and speculation.
ª    Distressed Securities Risk: Financially distressed securities involve considerable risk that can result in substantial or even total loss of the Fund’s investment. It is often difficult to obtain information as to the true condition of financially distressed securities. These securities are often subject to litigation among the participants in bankruptcy or reorganization proceedings.
ª    Emerging Markets Risk: Many of the risks with respect to foreign investments are more pronounced for investments in issuers in developing or emerging market countries. Emerging market countries tend to have more government exchange controls, more volatile interest and currency exchange rates, less market regulation, and less developed economic, political and legal systems than those of more developed countries. In addition, emerging market countries may experience high levels of inflation and may have less liquid securities markets and less efficient trading and settlement systems. The information available about an emerging market issuer may be less reliable than for comparable issuers in more developed capital markets. Additionally, there may be less publicly available information about certain foreign issuers.
ª    Equity Risk: The value of the equity securities held by the Fund may fall due to general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests.
ª    Event Driven Risk: The Investment Adviser’s evaluation of the outcome of a proposed spin-off or corporate restructuring may prove incorrect and the Fund’s return on an investment may be negative. Even if the Investment Adviser’s judgment regarding the likelihood of a specific outcome proves correct, the expected event may be delayed or completed on terms other than those originally proposed, which may cause the Fund to lose money or fail to achieve a desired rate of return. In addition, the ability of a shareholder activist holding company to effectuate a spin-off or restructuring is subject to the same risks and the Investment Adviser’s evaluation of such a company’s capabilities may be incorrect.
ª    Foreign Investment Risk: The prices of foreign securities may be more volatile than the prices of securities of U.S. issuers because of economic and social conditions abroad, political developments and changes in the regulatory environments of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the values of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. Additionally, there may be less information publicly available about certain issues. Foreign securities include American Depositary Receipts
(“ADRs”) and Global Depositary Receipts (“GDRs”). Unsponsored ADRs and GDRs are organized independently and without the cooperation of the foreign issuer of the underlying securities, and involve additional risks because U.S. reporting requirements do not apply and the issuing bank will recover shareholder distribution costs from changes in share prices and payment of dividends. Foreign securities in which the Fund invests may be traded in markets that close before the time that the Fund calculates its NAV. Furthermore, certain foreign securities in which the Fund invests may be listed on foreign exchanges that trade on weekends or other days when the Fund does not calculate its NAV. As a result, the value of the Fund's holdings may change on days when shareholders are not able to purchase or redeem the Fund's shares.
ª    Initial Public Offerings Risk: The Fund may purchase securities of companies in IPOs. Special risks associated with these securities may include limited numbers of shares available for trading, unseasoned trading, lack of investor knowledge of the companies and the companies’ limited operating histories. These factors may contribute to substantial price volatility for the shares of these companies.
ª    Large-Cap Company Risk: Larger, more established companies may be unable to attain the high growth rates of successful, smaller companies during periods of economic expansion.
ª    Management and Strategy Risk: The value of your investment depends on the judgment of the Investment Adviser about the quality, relative yield, value or market trends affecting a particular security, issuer, sector or region, which may prove to be incorrect. Investment strategies employed by the Investment Adviser in selecting investments for the Fund may not result in an increase in the value of your investment or in overall performance equal to that of other investments.
ª    Market Risk: The market price of a security or instrument may decline, sometimes rapidly or unpredictably, due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic or political conditions throughout the world, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. The market value of a security or instrument also may decline because of factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry. Natural disasters, public health emergencies (including epidemics and pandemics), terrorism and other global unforeseeable events may lead to instability in world economies and markets, market volatility and may have adverse long-term effects.
ª    Petroleum and Gas Sector Risk: The profitability of companies in the oil and gas industry is related to worldwide energy prices, exploration costs and production spending. Companies in the oil and gas industry may be at risk for environmental damage claims and other types of litigation. Companies in the oil and gas industry may be adversely affected by: natural disasters or other catastrophes; changes in exchange rates or interest rates; prices for competitive energy services; economic conditions; tax treatment or government regulation; government intervention; negative public perception; or unfavorable events in the regions where companies operate (e.g., expropriation, nationalization, confiscation of assets and property, imposition of restrictions on foreign investments or repatriation of capital, military coups, social or political unrest, violence or labor unrest). Companies in the oil and gas industry may have significant capital investments in, or engage in transactions involving, emerging market countries, which may heighten these risks.
ª    Preferred Stock Risk: Preferred stock represents an equity interest in a company that generally entitles the holder to receive, in preference to the holders of other stocks such as common stock, dividends and a fixed share of the proceeds resulting from a liquidation of the company. The market value of preferred stock is subject to company-specific and market risks applicable
generally to equity securities and is also sensitive to changes in the company’s creditworthiness, the ability of the company to make payments on the preferred stock, and changes in interest rates, typically declining in value if interest rates rise.
ª    Small-cap and Mid-cap Company Risk: The securities of small-capitalization or mid- capitalization companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger, more established companies or market averages in general. In addition, such companies typically are more likely to be adversely affected than large capitalization companies by changes in earning results, business prospects, investor expectations or poor economic or market conditions.
ª    Specific Strategy/Research Risk: The Fund’s Investment Adviser and an affiliate of the Fund’s Investment Adviser author and collaborate on research reports regarding spin-off related companies for institutional subscribers. Consistent with its compliance policies and procedures, the Investment Adviser may impose for a period of time an internal restriction in the trading in certain securities related to spin-off companies, corporate restructuring companies and/or their parent companies discussed in these research reports. As a result, the Fund may be prevented from trading in such securities at their optimal value or time as might otherwise have been permitted if such restrictions were not in effect. In addition, if subscribers to the research services buy or sell securities that are described in the reports, it could potentially have an adverse effect on the price of securities bought or sold by the Fund.
ª    Valuation Risk: The sales price the Fund could receive for any particular portfolio investment may differ from the Fund’s valuation of the investment, particularly for securities that trade in thin or volatile markets or that are valued by the Fund using a fair value methodology. Fair valuation of the Fund’s investments involves subjective judgment. Investors who purchase or redeem Fund shares on days when the Fund is holding fair-valued securities may receive fewer or more shares or lower or higher redemption proceeds than they would have received if the Fund had not fair-valued the security or had used a different valuation methodology.
ª    Warrants and Rights Risk: Warrants and rights may lack a liquid secondary market for resale. The prices of warrants may fluctuate as a result of speculation or other factors. Warrants can provide a greater potential for profit or loss than an equivalent investment in the underlying security. Prices of warrants do not necessarily move in tandem with the prices of their underlying securities and therefore are highly volatile and speculative investments. Failing to exercise subscription rights to purchase common stock would dilute the Fund’s interest in the issuing company. The market for such rights is not well developed, and the Fund may not always realize full value on the sale of rights.

Who may want to invest?
The Fund may be appropriate for investors who:
ª    wish to diversify their portfolios;
ª    wish to generate income and capital; and
ª    are comfortable with the risks described herein.
Risk Lose Money [Text] rr_RiskLoseMoney Before you decide whether to invest in the Fund, carefully consider these risk factors associated with investing in the Fund, which may cause investors to lose money.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as “non-diversified,” which means the Fund may invest a larger percentage of its assets in the securities of a smaller number of issuers than a diversified fund. Investment in securities of a limited number of issuers exposes the Fund to greater market risk and potential losses than if its assets were diversified among the securities of a greater number of issuers.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The performance information provided below indicates some of the risks of investing in the Fund by comparing the Fund with the performance of a broad-based market index. The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. Performance reflects fee waivers in effect. If fee waivers were not in place, the Fund’s performance would be reduced.
The Horizon Spin-off and Corporate Restructuring Fund, a series of Investment Managers Series Trust (the “Predecessor Fund”) reorganized into the Fund following the close of business on December 8, 2017. Before the Fund commenced operations, all of the assets and liabilities of the Predecessor Fund were transferred to the Fund in a tax-free reorganization (the "Reorganization"). As a result of the Reorganization, the Fund assumed the performance and accounting history of the Predecessor Fund prior to the date of the Reorganization. Performance results shown in the bar chart and the performance table below for the period through December 31, 2016 reflect the performance of the Predecessor Fund. On February 11, 2014, the Predecessor Fund’s principal investment strategy changed. The performance information for periods prior to that date is attributable to the Predecessor Fund’s previous principal investment strategy.

The performance information for the period prior to October 10, 2009, is that of the Liberty Street Horizon Fund, a series of the Forum Funds Trust (the “Liberty Street Fund”). The Predecessor Fund acquired the assets and liabilities of the Liberty Street Fund in a reorganization on March 16, 2007. The Liberty Street Fund’s performance and financial history were adopted by the Predecessor Fund and, for periods prior to October 10, 2009, are included in the Fund’s performance and financial history.

The performance of the Fund reflects the performance of the Predecessor Fund, which had substantially similar investment strategies. The bar chart shows performance of the Fund’s Institutional shares. Sales loads are not reflected in the bar chart, and if those charges were included, returns would be less than those shown. Advisor Class A, Advisor Class C and No Load Class shares performance would be lower than the Institutional Class performance because of the higher expenses paid by Advisor Class A, Advisor Class C and No Load Class shares.

Updated performance information is available on the Fund’s website at http://www.kineticsfunds.com or by calling the Fund toll-free at (800) 930-3828.
Important note about performance reflecting the Fund’s prior investment strategy. The performance shown for periods prior to February 11, 2014 reflects a previous investment strategy. Effective February 11, 2014, the Fund’s investment strategy was changed to focus exclusively on spin-offs and other forms of corporate restructuring.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The performance information provided below indicates some of the risks of investing in the Fund by comparing the Fund with the performance of a broad-based market index.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone (800) 930-3828
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.kineticsfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Calendar Year Total Return (before taxes) for Institutional Class Shares
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads Sales loads are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Best Quarter:Q1 202157.89%
Worst Quarter:Q1 2020-38.80%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2021
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 57.89%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (38.80%)
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the Periods Ended December 31, 2021)
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees, expenses or taxes)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate The after-tax returns for the Fund’s Institutional Class shares as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment.
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for Institutional Class shares only. After-tax returns for Advisor Class A, Advisor Class C and No Load Class shares will differ.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock The after-tax returns for the Fund’s Institutional Class shares as shown in the following table are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your tax situation and may differ from those shown. If you own Fund shares in a tax-deferred account, such as a 401(k) plan or an individual retirement account (“IRA”), the information on after-tax returns is not relevant to your investment. After-tax returns are shown for Institutional Class shares only. After-tax returns for Advisor Class A, Advisor Class C and No Load Class shares will differ.
Kinetics Spin-Off and Corporate Restructuring Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel S&P 500 Index (reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 28.71%
5 Years rr_AverageAnnualReturnYear05 18.47%
10 Years rr_AverageAnnualReturnYear10 16.55%
Since Inception rr_AverageAnnualReturnSinceInception 10.47%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 11, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | Advisor Class A  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol LSHAX
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75% [1]
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Wire fee ck0001083387_WireFee $ 15
Overnight check delivery fee for weekday ck0001083387_OvernightCheckDeliveryFee 25
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.25%
Other Operating Expenses rr_Component2OtherExpensesOverAssets 0.59%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.84%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 2.27% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.59%)
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 1.68% [3]
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts for Advisor Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in Advisor Class A shares of the Kinetics Funds.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 736
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 1,190
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,670
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,987
Label rr_AverageAnnualReturnLabel Advisor Class A Shares — Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 34.56%
5 Years rr_AverageAnnualReturnYear05 14.53%
10 Years rr_AverageAnnualReturnYear10 12.81%
Since Inception rr_AverageAnnualReturnSinceInception 5.07%
Inception Date rr_AverageAnnualReturnInceptionDate May 04, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | Advisor Class C  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol LSHCX
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther 1.00% [4]
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Wire fee ck0001083387_WireFee $ 15
Overnight check delivery fee for weekday ck0001083387_OvernightCheckDeliveryFee 25
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.75%
Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.25%
Other Operating Expenses rr_Component2OtherExpensesOverAssets 0.59%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.84%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 2.77% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.34%)
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 2.43% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 349
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 827
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,434
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 3,075
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 246
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 827
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,434
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 3,075
Label rr_AverageAnnualReturnLabel Advisor Class C Shares — Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 40.73%
5 Years rr_AverageAnnualReturnYear05 15.04%
10 Years rr_AverageAnnualReturnYear10 12.69%
Since Inception rr_AverageAnnualReturnSinceInception 4.80%
Inception Date rr_AverageAnnualReturnInceptionDate May 24, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | Institutional Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol LSHUX
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Wire fee ck0001083387_WireFee $ 15
Overnight check delivery fee for weekday ck0001083387_OvernightCheckDeliveryFee 25
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.20%
Other Operating Expenses rr_Component2OtherExpensesOverAssets 0.59%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.79%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 1.97% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.54%) [5]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 1.43% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 146
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 566
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,012
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,252
Annual Return 2012 rr_AnnualReturn2012 26.54%
Annual Return 2013 rr_AnnualReturn2013 43.07%
Annual Return 2014 rr_AnnualReturn2014 (4.65%)
Annual Return 2015 rr_AnnualReturn2015 (11.37%)
Annual Return 2016 rr_AnnualReturn2016 12.08%
Annual Return 2017 rr_AnnualReturn2017 15.90%
Annual Return 2018 rr_AnnualReturn2018 (8.11%)
Annual Return 2019 rr_AnnualReturn2019 31.74%
Annual Return 2020 rr_AnnualReturn2020 5.46%
Annual Return 2021 rr_AnnualReturn2021 43.12%
Label rr_AverageAnnualReturnLabel Institutional Class — Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 43.12%
5 Years rr_AverageAnnualReturnYear05 16.19%
10 Years rr_AverageAnnualReturnYear10 13.77%
Since Inception rr_AverageAnnualReturnSinceInception 5.25%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 11, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | Institutional Class | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Institutional Class — Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 43.09%
5 Years rr_AverageAnnualReturnYear05 15.64%
10 Years rr_AverageAnnualReturnYear10 13.42%
Since Inception rr_AverageAnnualReturnSinceInception 4.95%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 11, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | Institutional Class | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel Institutional Class — Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 25.55%
5 Years rr_AverageAnnualReturnYear05 12.90%
10 Years rr_AverageAnnualReturnYear10 11.49%
Since Inception rr_AverageAnnualReturnSinceInception 4.17%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 11, 2007
Kinetics Spin-Off and Corporate Restructuring Fund | No Load Class  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol LSHEX
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a percentage of Amount Redeemed) rr_RedemptionFeeOverRedemption (2.00%)
Wire fee ck0001083387_WireFee $ 15
Overnight check delivery fee for weekday ck0001083387_OvernightCheckDeliveryFee 25
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 1.00%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Shareholder Servicing Fees rr_Component1OtherExpensesOverAssets 0.25%
Other Operating Expenses rr_Component2OtherExpensesOverAssets 0.59%
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.84%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 2.02% [2]
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.39%)
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 1.63% [3]
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 166
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 596
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,052
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 2,317
Label rr_AverageAnnualReturnLabel No Load Class Shares — Return Before Taxes
1 Year rr_AverageAnnualReturnYear01 42.90%
Since Inception rr_AverageAnnualReturnSinceInception 16.71%
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 11, 2017
[1] No initial sales charge is applied to purchases of $1 million or more.
[2] Total Annual Fund Operating Expenses do not correlate to the ratio of operating expenses to average net assets before expense reimbursement found in the “Financial Highlights” section of this Prospectus, which reflects the Fund’s operating expenses and does not include acquired fund fees and expenses (“AFFE”).
[3] In addition, the Investment Adviser has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, front-end or contingent deferred loads, taxes, leverage interest, brokerage commissions, AFFE (as determined in accordance with Form N‑1A), expenses incurred in connection with any merger or reorganization and extraordinary expenses such as litigation expenses) do not exceed 1.50%, 2.25%, 1.25% and 1.45% of the average daily net assets of the Advisor Class A Shares, Advisor Class C Shares, Institutional Shares and No Load Shares, respectively. This agreement is in effect until April 30, 2023, and may be terminated before that date only by the Company’s Board of Directors. The Fund’s Investment Adviser is permitted to seek reimbursement from the Fund for a period ending three full years after the date of the waiver or payment. Any reimbursement is limited to the lesser of the Expense Cap in effect at the time of the waiver and the Expense Cap in effect at the time of reimbursement.
[4] A CDSC of 1.00% will be charged on Advisor Class C Share purchases that are redeemed in whole or in part within 12 months of purchase.
[5] The Fund’s adviser, Horizon Kinetics Asset Management, LLC (“Kinetics” or the “Investment Adviser”) has contractually agreed to reimburse the Fund the portion of Shareholder Servicing fees in excess of 0.05% of the average daily net assets of the Institutional Class until at least April 30, 2023.