Label	Element	Value
Sphere 500 Climate Fund
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	Sphere 500 Climate Fund
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Sphere 500 Climate Fund (the “Fund”) seeks to track the performance, before fees and expenses, of the Sphere 500 Fossil-Free IndexTM (the “Index”).
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.
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):
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 the Total Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. For the fiscal year ended September 30, 2023, the Fund’s portfolio turnover rate was 16% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	16.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense 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. The 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 those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is designed to reflect the performance of large companies listed on U.S. exchanges while excluding fossil fuel, utility and other companies with material climate-related risks. More information about the Index can be found at www.bitadata.com/pages/SPFFXI. The Index The Index is constructed beginning with the largest 500 U.S. companies that trade on regulated U.S. exchanges by market capitalization. As of December 31, 2023, the market capitalization of companies in the Index ranged from approximately $10 billion to $3 trillion. The index administrator, BITA GmbH (the “Index Administrator”), then eliminates companies from this investable universe using data obtained from As You Sow, an unaffiliated non-profit organization that promotes environmental responsibility through shareholder advocacy. As You Sow eliminates companies from the Index based on their risk profile of being exposed to the fossil fuel industry or other exclusionary screens. On a periodic basis, As You Sow publishes the current uninvestable lists, which are principally comprised of companies that contribute to climate change through fossil fuel activities. As You Sow designates a company as an uninvestable fossil fuel company if the company is engaged in producing, distributing, or refining fossil fuels; holding reserves of fossil fuels; is a utility that is primarily fossil fuel-powered; or is a producer of equipment for any of the above (i.e., companies that engage in oil, gas, or coal production, and downstream activities). The Index also excludes other uninvestable companies as determined from time to time by As You Sow. If a company is included in As You Sow’s uninvestable list, that company is not eligible for inclusion in the Index. The Index Administrator then re-weights the remaining companies on a free-float market capitalization basis. A company’s free float-adjusted market capitalization is calculated by multiplying the number of shares readily available in the market by the price of such shares. The Index is typically composed of approximately 400-450 companies and is rebalanced and reconstituted quarterly as of close on the third Friday of March, June, September, and December, based on data as of the close of business on the Friday of such reconstitution month. As of December 31, 2023 the Index was composed of 417 companies. The Fund’s Investment Strategy The Fund attempts to invest all, or substantially all, of its assets in the component securities that make up the Index in weightings that approximate the relative composition of the Index. By investing in component securities of the Index, under normal circumstances, the Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in securities issued by companies that do not (1) derive any revenue from the sale of fossil fuels, (2) hold fossil fuel related assets or reserves, (3) use fossil fuels for power generation, or (4) produce fossil fuel-related equipment. By excluding companies that engage in these fossil fuel activities, the Index, and therefore the Fund, are not exposed to companies with material climate change risk. The Fund may invest in companies that use fossil fuel as part of their business or have used fossil fuels in the past. Reflection Asset Management, LLC (the “Adviser”), serves as the investment adviser for the Fund and is responsible for trading on behalf of the Fund in line with the Index. Consistent with the Index, the Adviser rebalances the Fund quarterly. The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all the component securities of the Index in approximately the same weightings as in the Index. This is referred to as a passive or indexing approach to investing. To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. As of the fiscal year ended September 30, 2023, the Index was not concentrated in any industry or group of industries; however, the Index, and therefore the Fund, had significant exposure to the information technology sector. As of the fiscal year ended September 30, 2023, the Fund had invested 31% of its net assets in the information technology sector. Climate-Focused Investing By investing in the Index, the Fund will invest in companies that do not contribute to climate change in a material way through their fossil fuel activities. According to the U.S. Energy Information Administration, in 2021, 73% of greenhouse gas emissions came from burning fossil fuels. The Fund also seeks to vote proxies in a climate-focused way, such as voting for proposals to reduce or eliminate greenhouse gas emissions, using voting guidelines from As You Vote, an affiliate of As You Sow.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index.
Risk [Heading]	rr_RiskHeading	Principal Risks
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and performance table below illustrate the risks and volatility of an investment in the Fund by showing the performance of the Fund since inception and by showing changes in how the Fund’s average annual returns for the one year and since inception periods compared with those of the Index and a broad measure of market performance. The Fund’s past performance, both before and after taxes, does not necessarily indicate how the Fund will perform in the future. Updated performance information is available on the Fund’s website at www.oursphere.org/fund.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and performance table below illustrate the risks and volatility of an investment in the Fund by showing the performance of the Fund since inception and by showing changes in how the Fund’s average annual returns for the one year and since inception periods compared with those of the Index and a broad measure of market performance.
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.oursphere.org/fund
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance, both before and after taxes, does not necessarily indicate how the Fund will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Year Returns as of December 31
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	During the period of time shown in the bar chart, the highest return for a calendar quarter was 12.92% for the quarter ended December 31, 2023, and the lowest return for a calendar quarter was -15.97% for the quarter ended June 30, 2022.
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	highest return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2023
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	12.92%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	lowest return
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2022
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(15.97%)
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns(For the Periods Ended December 31, 2023)
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns 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	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who are exempt from tax or hold their Fund shares through tax-deferred or other tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”).
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who are exempt from tax or hold their Fund shares through tax-deferred or other tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”).
Sphere 500 Climate Fund \| Risk Lose Money [Member]
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Remember, in addition to possibly not achieving your investment goals, you could lose all or a portion of your investment in the Fund over long or even short periods of time.
Sphere 500 Climate Fund \| Climate Investing Considerations Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Climate Investing Considerations Risk. Considerations related to climate risk, such as environmental criteria (e.g., fossil fuel screens), applied to the Index’s construction may limit the number of investment opportunities available to the Fund, and as a result, at times, the Fund may underperform funds that are not subject to similar investment considerations. For example, the Index may exclude certain securities due to climate-focused considerations when other investment considerations would suggest that investing in such securities would be advantageous. The Fund may also underperform funds that invest in the energy and utilities sectors, particularly in times of rising oil, gas and energy prices.
Sphere 500 Climate Fund \| General Market Risk; Recent Market Events Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	General Market Risk; Recent Market Events. The market value of a security may move up or down, sometimes rapidly and unpredictably. These fluctuations may cause a security to be worth less than the price originally paid for it, or less than it was worth at an earlier time. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole. U.S. and international markets have experienced volatility in recent months and years due to a number of economic, political and global macro factors, including rising inflation, problems in the banking sector, wars between Russia and Ukraine and in the Middle East and the impact of the coronavirus (COVID-19) global pandemic. Uncertainties regarding interest rate levels, political events, conflicts in Europe and in the Middle East, trade tensions and the possibility of a national or global recession have also contributed to market volatility.Global economies and financial markets are increasingly interconnected, which increases the possibility that conditions in one country or region might adversely impact issuers in a different country or region. Continuing market volatility as a result of recent market conditions or other events may have adverse effects on the Fund’s returns. The Adviser will monitor developments and seek to manage the Fund in a manner consistent with achieving the Fund’s investment objective, but there can be no assurance that it will be successful in doing so.
Sphere 500 Climate Fund \| Small Fund Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Small Fund Risk. There can be no assurance that the Fund will grow to or maintain an economically viable size, in which case the Board of Trustees may determine to liquidate the Fund. Liquidation of the Fund can be initiated without shareholder approval by the Board of Trustees if it determines that liquidation is in the best interest of shareholders. As a result, the timing of the Fund's liquidation may not be favorable.
Sphere 500 Climate Fund \| Common Stock Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Common Stock Risk. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.
Sphere 500 Climate Fund \| Large-Capitalization Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Large-Capitalization Risk. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies.
Sphere 500 Climate Fund \| Sector Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors. ◦Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.
Sphere 500 Climate Fund \| Sector Risk, Information Technology Sector Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.
Sphere 500 Climate Fund \| Passive Investment Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.
Sphere 500 Climate Fund \| Index Calculation Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Index Calculation Risk. There is no assurance that the Index Administrator will compile the Index accurately or that the Index will be reconstituted, rebalanced, calculated or disseminated accurately. The Index relies directly or indirectly on various sources of information to assess the criteria of issuers included in the Index, including information that may be based on assumptions and estimates. Neither the Fund, the Index Administrator, or the Adviser can offer assurances that the Index’s calculation methodology or sources of information will provide an accurate assessment of included issuers or a correct valuation of securities, nor can they guarantee the availability or timeliness of the production of the Index.
Sphere 500 Climate Fund \| Limited Operating History Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Limited Operating History Risk. The Fund has a limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decision.
Sphere 500 Climate Fund \| Cybersecurity Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Cybersecurity Risk. With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund’s ability to calculate its net asset value (“NAV”), impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs.
Sphere 500 Climate Fund \| Third Party Data Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Third Party Data Risk. The composition of the Index, and consequently the Fund’s portfolio, is heavily dependent on information and data published by independent third parties (“Third Party Data”). When Third Party Data proves to be incorrect or incomplete, any decisions made in reliance thereon may lead to the inclusion or exclusion of securities from the Index that would have been excluded or included had the Third Party Data been correct and complete. If the composition of the Index reflects such errors, the Fund’s portfolio can also be expected to reflect the errors.
Sphere 500 Climate Fund \| Tracking Error Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Tracking Error Risk. As with all index funds, the performance of the Fund and its Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.
Sphere 500 Climate Fund \| Operational Risk Member
Prospectus [Line Items]	rr_ProspectusLineItems
Risk [Text Block]	rr_RiskTextBlock	Operational Risk. Operational risks include human error, changes in personnel, system changes, faults in communication, and failures in systems, technology, or processes. Various operational events or circumstances are outside the Adviser’s control, including instances at third parties. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.
Sphere 500 Climate Fund \| Sphere 500 Fossil Free Index
Prospectus [Line Items]	rr_ProspectusLineItems
Label	rr_AverageAnnualReturnLabel	Sphere 500 Fossil-Free Index(reflects no deduction for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	31.28%
Since Inception	rr_AverageAnnualReturnSinceInception	13.40%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 04, 2021
Sphere 500 Climate Fund \| S&P 500 Index
Prospectus [Line Items]	rr_ProspectusLineItems
Label	rr_AverageAnnualReturnLabel	S&P 500 Index(reflects no deduction for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	26.29%
Since Inception	rr_AverageAnnualReturnSinceInception	6.44%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 04, 2021
Sphere 500 Climate Fund \| Sphere 500 Climate Fund
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	SPFFX
Management Fees (as a percentage of Assets)	rr_ManagementFeesOverAssets	0.07%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses (as a percentage of Assets):	rr_OtherExpensesOverAssets	none
Expenses (as a percentage of Assets)	rr_ExpensesOverAssets	0.07%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	$ 7
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	23
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	40
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	$ 90
Annual Return 2022	rr_AnnualReturn2022	(20.02%)
Annual Return 2023	rr_AnnualReturn2023	29.48%
Label	rr_AverageAnnualReturnLabel	Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	29.48%
Since Inception	rr_AverageAnnualReturnSinceInception	5.61%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 04, 2021
Sphere 500 Climate Fund \| Sphere 500 Climate Fund \| After Taxes on Distributions
Prospectus [Line Items]	rr_ProspectusLineItems
Label	rr_AverageAnnualReturnLabel	Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	29.02%
Since Inception	rr_AverageAnnualReturnSinceInception	5.34%
Sphere 500 Climate Fund \| Sphere 500 Climate Fund \| After Taxes on Distributions and Sales
Prospectus [Line Items]	rr_ProspectusLineItems
Label	rr_AverageAnnualReturnLabel	Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	17.68%
Since Inception	rr_AverageAnnualReturnSinceInception	4.26%

Label

Element

Value

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Sphere 500 Climate Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Sphere 500 Climate Fund (the “Fund”) seeks to track the performance, before fees and expenses, of the Sphere 500 Fossil-Free IndexTM (the “Index”).

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.

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):

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 the Total Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. For the fiscal year ended September 30, 2023, the Fund’s portfolio turnover rate was 16% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

16.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Expense 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. The 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 those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is designed to reflect the performance of large companies listed on U.S. exchanges while excluding fossil fuel, utility and other companies with material climate-related risks. More information about the Index can be found at www.bitadata.com/pages/SPFFXI.

The Index

The Index is constructed beginning with the largest 500 U.S. companies that trade on regulated U.S. exchanges by market capitalization. As of December 31, 2023, the market capitalization of companies in the Index ranged from approximately $10 billion to $3 trillion. The index administrator, BITA GmbH (the

“Index Administrator”), then eliminates companies from this investable universe using data obtained from As You Sow, an unaffiliated non-profit organization that promotes environmental responsibility through shareholder advocacy. As You Sow eliminates companies from the Index based on their risk profile of being exposed to the fossil fuel industry or other exclusionary screens.

On a periodic basis, As You Sow publishes the current uninvestable lists, which are principally comprised of companies that contribute to climate change through fossil fuel activities. As You Sow designates a company as an uninvestable fossil fuel company if the company is engaged in producing, distributing, or refining fossil fuels; holding reserves of fossil fuels; is a utility that is primarily fossil fuel-powered; or is a producer of equipment for any of the above (i.e., companies that engage in oil, gas, or coal production, and downstream activities). The Index also excludes other uninvestable companies as determined from time to time by As You Sow.

If a company is included in As You Sow’s uninvestable list, that company is not eligible for inclusion in the Index. The Index Administrator then re-weights the remaining companies on a free-float market capitalization basis. A company’s free float-adjusted market capitalization is calculated by multiplying the number of shares readily available in the market by the price of such shares.

The Index is typically composed of approximately 400-450 companies and is rebalanced and reconstituted quarterly as of close on the third Friday of March, June, September, and December, based on data as of the close of business on the Friday of such reconstitution month. As of December 31, 2023 the Index was composed of 417 companies.

The Fund’s Investment Strategy

The Fund attempts to invest all, or substantially all, of its assets in the component securities that make up the Index in weightings that approximate the relative composition of the Index. By investing in component securities of the Index, under normal circumstances, the Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in securities issued by companies that do not (1) derive any revenue from the sale of fossil fuels, (2) hold fossil fuel related assets or reserves, (3) use fossil fuels for power generation, or (4) produce fossil fuel-related equipment. By excluding companies that engage in these fossil fuel activities, the Index, and therefore the Fund, are not exposed to companies with material climate change risk. The Fund may invest in companies that use fossil fuel as part of their business or have used fossil fuels in the past.

Reflection Asset Management, LLC (the “Adviser”), serves as the investment adviser for the Fund and is responsible for trading on behalf of the Fund in line with the Index. Consistent with the Index, the Adviser rebalances the Fund quarterly. The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all the component securities of the Index in approximately the same weightings as in the Index. This is referred to as a passive or indexing approach to investing.

To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. As of the fiscal year ended September 30, 2023, the Index was not concentrated in any industry or group of industries; however, the Index, and therefore the Fund, had significant exposure to the information technology sector. As of the fiscal year ended September 30, 2023, the Fund had invested 31% of its net assets in the information technology sector.

Climate-Focused Investing

By investing in the Index, the Fund will invest in companies that do not contribute to climate change in a material way through their fossil fuel activities. According to the U.S. Energy Information Administration, in 2021, 73% of greenhouse gas emissions came from burning fossil fuels. The Fund also seeks to vote proxies in a climate-focused way, such as voting for proposals to reduce or eliminate greenhouse gas emissions, using voting guidelines from As You Vote, an affiliate of As You Sow.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and performance table below illustrate the risks and volatility of an investment in the Fund by showing the performance of the Fund since inception and by showing changes in how the Fund’s average annual returns for the one year and since inception periods compared with those of the Index and a broad measure of market performance. The Fund’s past performance, both before and after taxes, does not necessarily indicate how the Fund will perform in the future. Updated performance information is available on the Fund’s website at www.oursphere.org/fund.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.oursphere.org/fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund’s past performance, both before and after taxes, does not necessarily indicate how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Calendar Year Returns as of December 31

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period of time shown in the bar chart, the highest return for a calendar quarter was 12.92% for the quarter ended December 31, 2023, and the lowest return for a calendar quarter was -15.97% for the quarter ended June 30, 2022.

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.92%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.97%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns(For the Periods Ended December 31, 2023)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns 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

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who are exempt from tax or hold their Fund shares through tax-deferred or other tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”).

Performance Table Closing [Text Block]

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After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who are exempt from tax or hold their Fund shares through tax-deferred or other tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”).

Sphere 500 Climate Fund | Risk Lose Money [Member]

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Remember, in addition to possibly not achieving your investment goals, you could lose all or a portion of your investment in the Fund over long or even short periods of time.

Sphere 500 Climate Fund | Climate Investing Considerations Risk Member

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Climate Investing Considerations Risk. Considerations related to climate risk, such as environmental criteria (e.g., fossil fuel screens), applied to the Index’s construction may limit the number of investment opportunities available to the Fund, and as a result, at times, the Fund may underperform funds that are not subject to similar investment considerations. For example, the Index may exclude certain securities due to climate-focused considerations when other investment considerations would suggest that investing in such securities would be advantageous. The Fund may also underperform funds that invest in the energy and utilities sectors, particularly in times of rising oil, gas and energy prices.

Sphere 500 Climate Fund | General Market Risk; Recent Market Events Member

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General Market Risk; Recent Market Events. The market value of a security may move up or down, sometimes rapidly and unpredictably. These fluctuations may cause a security to be worth less than the price originally paid for it, or less than it was worth at an earlier time. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole. U.S. and international markets have experienced volatility in recent months and years due to a number of economic, political and global macro factors, including rising inflation, problems in the banking sector, wars between Russia and Ukraine and in the Middle East and the impact of the coronavirus (COVID-19) global pandemic. Uncertainties regarding interest rate levels, political events, conflicts in Europe and in the Middle East, trade tensions and the possibility of a national or global recession have also contributed to market volatility.Global economies and financial markets are increasingly interconnected, which increases the possibility that conditions in one country or region might adversely impact issuers in a different country or region. Continuing market volatility as a result of recent market conditions or other events may have adverse effects on the Fund’s returns. The Adviser will monitor developments and seek to manage the Fund in a manner consistent with achieving the Fund’s investment objective, but there can be no assurance that it will be successful in doing so.

Sphere 500 Climate Fund | Small Fund Risk Member

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Small Fund Risk. There can be no assurance that the Fund will grow to or maintain an economically viable size, in which case the Board of Trustees may determine to liquidate the Fund. Liquidation of the Fund can be initiated without shareholder approval by the Board of Trustees if it determines that liquidation is in the best interest of shareholders. As a result, the timing of the Fund's liquidation may not be favorable.

Sphere 500 Climate Fund | Common Stock Risk Member

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Common Stock Risk. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.

Sphere 500 Climate Fund | Large-Capitalization Risk Member

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Large-Capitalization Risk. Larger, more established companies may be unable to respond quickly to new competitive challenges such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rates of successful smaller companies.

Sphere 500 Climate Fund | Sector Risk Member

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Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

◦Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

Sphere 500 Climate Fund | Sector Risk, Information Technology Sector Risk Member

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Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

Sphere 500 Climate Fund | Passive Investment Risk Member

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Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Sphere 500 Climate Fund | Index Calculation Risk Member

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Index Calculation Risk. There is no assurance that the Index Administrator will compile the Index accurately or that the Index will be reconstituted, rebalanced, calculated or disseminated accurately. The Index relies directly or indirectly on various sources of information to assess the criteria of issuers included in the Index, including information that may be based on assumptions and estimates. Neither the Fund, the Index Administrator, or the Adviser can offer assurances that the Index’s calculation methodology or sources of information will provide an accurate assessment of included issuers or a correct valuation of securities, nor can they guarantee the availability or timeliness of the production of the Index.

Sphere 500 Climate Fund | Limited Operating History Risk Member

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Limited Operating History Risk. The Fund has a limited operating history. As a result, prospective investors have a limited track record or history on which to base their investment decision.

Sphere 500 Climate Fund | Cybersecurity Risk Member

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Cybersecurity Risk. With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund’s ability to calculate its net asset value (“NAV”), impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs.

Sphere 500 Climate Fund | Third Party Data Risk Member

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Third Party Data Risk. The composition of the Index, and consequently the Fund’s portfolio, is heavily dependent on information and data published by independent third parties (“Third Party Data”). When Third Party Data proves to be incorrect or incomplete, any decisions made in reliance thereon may lead to the inclusion or exclusion of securities from the Index that would have been excluded or included had the Third Party Data been correct and complete. If the composition of the Index reflects such errors, the Fund’s portfolio can also be expected to reflect the errors.

Sphere 500 Climate Fund | Tracking Error Risk Member

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Tracking Error Risk. As with all index funds, the performance of the Fund and its Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.

Sphere 500 Climate Fund | Operational Risk Member

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Operational Risk. Operational risks include human error, changes in personnel, system changes, faults in communication, and failures in systems, technology, or processes. Various operational events or circumstances are outside the Adviser’s control, including instances at third parties. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

Sphere 500 Climate Fund | Sphere 500 Fossil Free Index

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Sphere 500 Fossil-Free Index(reflects no deduction for fees, expenses or taxes)

1 Year

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31.28%

Since Inception

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13.40%