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Fees and Expenses
Apr. 30, 2026
USD ($)
Kinetics Spin-Off And Corporate Restructuring Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
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 42 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 54 of the Fund’s statement of additional information.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] 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”).
Shareholder Fees Caption [Optional Text] Shareholder Fees(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)
Expenses Deferred Charges [Text Block] 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.
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] 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] 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] You would pay the following expenses if you did not redeem your shares:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] 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 4% of the average value of its portfolio.
Portfolio Turnover, Rate 4.00%
Kinetics Spin-Off And Corporate Restructuring Fund | Kinetics Spin-Off And Corporate Restructuring Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
No Load Class Prospectus | Kinetics Internet Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Internet 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Internet Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Internet Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Internet Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your costs for the Internet Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Internet Portfolio 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 Internet Portfolio’s, and therefore the Internet Fund’s, performance. During the most recent fiscal year, the Internet Portfolio’s portfolio turnover rate was 45%] of the average value of its portfolio.
Portfolio Turnover, Rate 45.00%
No Load Class Prospectus | Kinetics Global Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Global 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in No Load Class shares of the Global Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Global 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 Global Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Global Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Global Portfolio 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 Global Portfolio’s, and therefore the Global Fund’s, performance. During the most recent fiscal year, the Global Portfolio’s portfolio turnover rate was 5% of the average value of its portfolio.
Portfolio Turnover, Rate 5.00%
No Load Class Prospectus | Kinetics Paradigm Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Paradigm 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Paradigm Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Paradigm 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 Paradigm Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Paradigm Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Paradigm Portfolio 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 Paradigm Portfolio’s, and therefore the Paradigm Fund’s, performance. During the most recent fiscal year, the Paradigm Portfolio’s portfolio turnover rate was 3% of the average value of its portfolio.
Portfolio Turnover, Rate 3.00%
No Load Class Prospectus | Kinetics Small Cap Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Small Cap 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Small Cap Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Small Cap 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 Small Cap Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Small Cap Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Small Cap Portfolio 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 Small Cap Portfolio’s, and therefore the Small Cap Fund’s, performance. During the most recent fiscal year, the Small Cap Portfolio’s portfolio turnover rate was 0% of the average value of its portfolio.
Portfolio Turnover, Rate none
No Load Class Prospectus | Kinetics Market Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Market Opportunities 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Market Opportunities Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Market Opportunities 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 Market Opportunities Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Market Opportunities Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Market Opportunities Portfolio 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 Market Opportunities Portfolio’s, and therefore the Market Opportunities Fund’s, performance. During the most recent fiscal year, the Market Opportunities Portfolio’s portfolio turnover rate was 4% of the average value of its portfolio.
Portfolio Turnover, Rate 4.00%
No Load Class Prospectus | Kinetics Multi-Disciplinary Income Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Multi-Disciplinary Income 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.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] 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 Multi-Disciplinary Income Fund’s operating Expenses and does not include acquired fund fees and expenses.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Multi-Disciplinary Income Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Multi-Disciplinary Income 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 Multi-Disciplinary Income Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Multi-Disciplinary Income Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Multi-Disciplinary Income Portfolio 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 Multi-Disciplinary Income Portfolio’s, and therefore the Multi-Disciplinary Income Fund’s, performance. During the most recent fiscal year, the Multi-Disciplinary Income Portfolio’s portfolio turnover rate was 74% of the average value of its portfolio.
Portfolio Turnover, Rate 74.00%
Advisor A & C Prospectus | Kinetics Internet Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block]
This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Internet 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 Advisor Classes” beginning on page 110 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 59 of the Fund’s statement of additional information.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Internet Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Internet Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Internet Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your costs for the Internet Fund would be:
Expense Example, No Redemption, By Year, Caption [Text] (if you do not redeem your shares at the end of the period)
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Internet Portfolio 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 Internet Portfolio’s, and therefore the Internet Fund’s, performance. During the most recent fiscal year, the Internet Portfolio’s portfolio turnover rate was 45% of the average value of its portfolio.
Portfolio Turnover, Rate 45.00%
Advisor A & C Prospectus | Kinetics Internet Fund | Kinetics Internet Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
Advisor A & C Prospectus | Kinetics Global Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Global 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 Advisor Classes” beginning on page 110 of the Fund’s prospectus, in Appendix A to this Prospectus--Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 59 of the Fund’s statement of additional information.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Advisor Class A and Advisor Class C shares of the Global Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Global 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 Global Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Global Fund would be:
Expense Example, No Redemption, By Year, Caption [Text] (if you do not redeem your shares at the end of the period)
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Global Portfolio 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 Global Portfolio’s, and therefore the Global Fund’s, performance. During the most recent fiscal year, the Global Portfolio’s portfolio turnover rate was 5% of the average value of its portfolio.
Portfolio Turnover, Rate 5.00%
Advisor A & C Prospectus | Kinetics Global Fund | Kinetics Global Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
Advisor A & C Prospectus | Kinetics Paradigm Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Paradigm 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 Advisor Classes” beginning on page 110 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 59 of the Fund’s statement of additional information.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Paradigm Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Paradigm 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 Paradigm Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Paradigm Fund would be:
Expense Example, No Redemption, By Year, Caption [Text] (if you do not redeem your shares at the end of the period)
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Paradigm Portfolio 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 Paradigm Portfolio’s, and therefore the Paradigm Fund’s, performance. During the most recent fiscal year, the Paradigm Portfolio’s portfolio turnover rate was 3% of the average value of its portfolio.
Portfolio Turnover, Rate 3.00%
Advisor A & C Prospectus | Kinetics Paradigm Fund | Kinetics Paradigm Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
Advisor A & C Prospectus | Kinetics Small Cap Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Small Cap 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 Advisor Classes” beginning on page 110 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 59 of the Fund’s statement of additional information.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Small Cap Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Small Cap 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 Small Cap Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Small Cap Fund would be:
Expense Example, No Redemption, By Year, Caption [Text] (if you do not redeem your shares at the end of the period)
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Small Cap Portfolio 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 Small Cap Portfolio’s, and therefore the Small Cap Fund’s, performance. During the most recent fiscal year, the Small Cap Portfolio’s portfolio turnover rate was 0% of the average value of its portfolio.
Portfolio Turnover, Rate none
Advisor A & C Prospectus | Kinetics Small Cap Opportunities Fund | Kinetics Small Cap Opportunities Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
Advisor A & C Prospectus | Kinetics Market Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Market Opportunities 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 Advisor Classes” beginning on page 110 of the Fund’s prospectus, in Appendix A to this Prospectus - Financial Intermediary Sales Charge Variations, and “Purchasing Shares” beginning on page 59 of the Fund’s statement of additional information.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Market Opportunities Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Market Opportunities 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 Market Opportunities Fund’s operating expenses remain the same (taking into account the expense limitation only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Market Opportunities Fund would be:
Expense Example, No Redemption, By Year, Caption [Text] (if you do not redeem your shares at the end of the period)
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Market Opportunities Portfolio 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 Market Opportunities Portfolio’s, and therefore the Market Opportunities Fund’s, performance. During the most recent fiscal year, the Market Opportunities Portfolio’s portfolio turnover rate was 4% of the average value of its portfolio.
Portfolio Turnover, Rate 4.00%
Advisor A & C Prospectus | Kinetics Market Opportunities Fund | Kinetics Market Opportunities Fund, Advisor Class A  
Prospectus [Line Items]  
Expense Breakpoint Discounts [Text] 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] $ 50,000
Institutional Class Prospectus | Kinetics Internet Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the
Internet 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.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are estimated for the current fiscal year since Institutional Class Shares of the Internet Fund have not commenced operations as of the date of this Prospectus.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Internet Fund with
the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Internet
Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The
Example also assumes that your investment has a 5% return each year and that the Internet Fund’s
operating expenses remain the same (taking into account the expense limitations only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your costs for the Internet Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Internet Portfolio 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 Internet
Portfolio’s, and therefore the Internet Fund’s, performance. During the most recent fiscal year, the
Internet Portfolio’s portfolio turnover rate was 45% of the average value of its portfolio.
Portfolio Turnover, Rate 45.00%
Institutional Class Prospectus | Kinetics Global Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Global
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.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are estimated for the current fiscal year since Institutional Class Shares of the Global Fund have not commenced operations as of the date of this Prospectus.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in Institutional Class shares
of the Global Fund with the cost of investing in other mutual funds. This Example assumes that you
invest $10,000 in the Global 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 Global Fund’s operating expenses remain the same (taking into account the expense limitations only
in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Global Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] The Global Portfolio 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 Global
Portfolio’s, and therefore the Global Fund’s, performance. During the most recent fiscal year, the Global
Portfolio’s portfolio turnover rate was 5% of the average value of its portfolio.
Portfolio Turnover, Rate 5.00%
Institutional Class Prospectus | Kinetics Paradigm Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the
Paradigm 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Paradigm Fund with
the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the
Paradigm 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 Paradigm
Fund’s operating expenses remain the same (taking into account the expense limitations only in the first
year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Paradigm Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Paradigm Portfolio 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 Paradigm
Portfolio’s, and therefore the Paradigm Fund’s, performance. During the most recent fiscal year, the
Paradigm Portfolio’s portfolio turnover rate was 3% of the average value of its portfolio.
Portfolio Turnover, Rate 3.00%
Institutional Class Prospectus | Kinetics Small Cap Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Small
Cap 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Small Cap Fund with
the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in the Small
Cap 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 Small Cap Fund’s
operating expenses remain the same (taking into account the expense limitations only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Small Cap Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Small Cap Portfolio 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 Small Cap
Portfolio’s, and therefore the Small Cap Fund’s, performance. During the most recent fiscal year, the
Small Cap Portfolio’s portfolio turnover rate was 0% of the average value of its portfolio.
Portfolio Turnover, Rate none
Institutional Class Prospectus | Kinetics Market Opportunities Fund  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund
Expense Narrative [Text Block] This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the
Market Opportunities 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.
Shareholder Fees Caption [Optional Text] SHAREHOLDER FEES(fees paid directly from your investment)
Operating Expenses Caption [Optional Text] ANNUAL FUND OPERATING EXPENSES(expenses that you pay each year as a percentage of the value of your investment)
Expense Example [Heading] Example.
Expense Example Narrative [Text Block] This Example is intended to help you compare the cost of investing in the Market Opportunities
Fund with the cost of investing in other mutual funds. This Example assumes that you invest $10,000 in
the Market Opportunities 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 Market Opportunities Fund’s operating expenses remain the same (taking into account the expense
limitations only in the first year).
Expense Example by, Year, Caption [Text] Although your actual costs may be higher or lower, based on these assumptions your cost for the Market Opportunities Fund would be:
Portfolio Turnover [Heading] Portfolio Turnover.
Portfolio Turnover [Text Block] The Market Opportunities Portfolio 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 Market Opportunities Portfolio’s, and therefore the Market Opportunities Fund’s,
performance. During the most recent fiscal year, the Market Opportunities Portfolio’s portfolio turnover
rate was 4% of the average value of its portfolio.
Portfolio Turnover, Rate 4.00%