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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Starboard Investment Trust
Prospectus Date rr_ProspectusDate Feb. 12, 2018
Cavalier Adaptive Income Fund | Institutional Class Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed On Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a % of the lesser of amount purchased or redeemed) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a % of amount redeemed) rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 1.00% [1]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none [1]
Other Expenses rr_OtherExpensesOverAssets 3.33% [1]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.95% [1],[2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.28% [1]
Less Fee Waiver and/or Expense Limitation rr_FeeWaiverOrReimbursementOverAssets 3.08% [1],[3]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Limitation rr_NetExpensesOverAssets 2.20% [1]
1 Year rr_ExpenseExampleYear01 $ 223
3 Years rr_ExpenseExampleYear03 1,306
5 Years rr_ExpenseExampleYear05 2,382
10 Years rr_ExpenseExampleYear10 5,047
1 Year rr_ExpenseExampleNoRedemptionYear01 223
3 Years rr_ExpenseExampleNoRedemptionYear03 1,306
5 Years rr_ExpenseExampleNoRedemptionYear05 2,382
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 5,047
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.ncfunds.com/fundpages/801.htm
Annual Return 2012 rr_AnnualReturn2012 6.18%
Annual Return 2013 rr_AnnualReturn2013 0.85%
Annual Return 2014 rr_AnnualReturn2014 0.68%
Annual Return 2015 rr_AnnualReturn2015 (1.39%)
Annual Return 2016 rr_AnnualReturn2016 7.56%
Annual Return 2017 rr_AnnualReturn2017 4.89%
Year to Date Return, Label rr_YearToDateReturnLabel Year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Dec. 31, 2017
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 4.89%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Mar. 31, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 3.26%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2013
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (1.48%)
Past 1 Year rr_AverageAnnualReturnYear01 4.89%
Past 5 Years rr_AverageAnnualReturnYear05 2.47%
Since Inception rr_AverageAnnualReturnSinceInception 2.68% [4]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 02, 2009
Cavalier Adaptive Income Fund | Institutional Class Shares | After taxes on distributions  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 2.74%
Past 5 Years rr_AverageAnnualReturnYear05 1.49%
Since Inception rr_AverageAnnualReturnSinceInception 1.69% [4]
Cavalier Adaptive Income Fund | Institutional Class Shares | After taxes on distributions and sale of shares  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 2.76%
Past 5 Years rr_AverageAnnualReturnYear05 1.45%
Since Inception rr_AverageAnnualReturnSinceInception 1.66% [4]
Cavalier Adaptive Income Fund | Institutional Class Shares | Barclays Capital U.S. Aggregate Bond Index (reflects no deductions for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 3.54%
Past 5 Years rr_AverageAnnualReturnYear05 2.10%
Since Inception rr_AverageAnnualReturnSinceInception 3.50% [4]
Cavalier Adaptive Income Fund | Class C Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed On Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) (as a % of the lesser of amount purchased or redeemed) rr_MaximumDeferredSalesChargeOverOther 1.00%
Redemption Fee (as a % of amount redeemed) rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 1.00% [1]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00% [1]
Other Expenses rr_OtherExpensesOverAssets 3.33% [1]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.95% [1],[2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 6.28% [1]
Less Fee Waiver and/or Expense Limitation rr_FeeWaiverOrReimbursementOverAssets 3.08% [1],[3]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Limitation rr_NetExpensesOverAssets 3.20% [1]
1 Year rr_ExpenseExampleYear01 $ 423
3 Years rr_ExpenseExampleYear03 1,585
5 Years rr_ExpenseExampleYear05 2,815
10 Years rr_ExpenseExampleYear10 5,756
1 Year rr_ExpenseExampleNoRedemptionYear01 323
3 Years rr_ExpenseExampleNoRedemptionYear03 1,585
5 Years rr_ExpenseExampleNoRedemptionYear05 2,815
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 5,756
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.ncfunds.com/fundpages/803.htm
Past 1 Year rr_AverageAnnualReturnYear01 3.92%
Past 5 Years rr_AverageAnnualReturnYear05 1.47%
Since Inception rr_AverageAnnualReturnSinceInception 1.61% [4]
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 18, 2011
Cavalier Adaptive Income Fund | Class C Shares | Barclays Capital U.S. Aggregate Bond Index (reflects no deductions for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 3.54%
Past 5 Years rr_AverageAnnualReturnYear05 2.10%
Since Inception rr_AverageAnnualReturnSinceInception 3.24% [4]
Cavalier Adaptive Income Fund | Class A Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed On Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 4.50%
Maximum Deferred Sales Charge (Load) (as a % of the lesser of amount purchased or redeemed) rr_MaximumDeferredSalesChargeOverOther none
Redemption Fee (as a % of amount redeemed) rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 1.00% [1]
Distribution and/or Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25% [1]
Other Expenses rr_OtherExpensesOverAssets 3.33% [1]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.95% [1],[2]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 5.53% [1]
Less Fee Waiver and/or Expense Limitation rr_FeeWaiverOrReimbursementOverAssets 3.08% [1],[3]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Limitation rr_NetExpensesOverAssets 2.45% [1]
1 Year rr_ExpenseExampleYear01 $ 687
3 Years rr_ExpenseExampleYear03 1,764
5 Years rr_ExpenseExampleYear05 2,830
10 Years rr_ExpenseExampleYear10 5,446
1 Year rr_ExpenseExampleNoRedemptionYear01 687
3 Years rr_ExpenseExampleNoRedemptionYear03 1,764
5 Years rr_ExpenseExampleNoRedemptionYear05 2,830
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 5,446
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.ncfunds.com/fundpages/875.htm
Past 1 Year rr_AverageAnnualReturnYear01 none [5]
Past 5 Years rr_AverageAnnualReturnYear05 none [5]
Since Inception rr_AverageAnnualReturnSinceInception none [4],[5]
Cavalier Adaptive Income Fund | Class A Shares | Barclays Capital U.S. Aggregate Bond Index (reflects no deductions for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 3.54%
Past 5 Years rr_AverageAnnualReturnYear05 2.10%
Since Inception rr_AverageAnnualReturnSinceInception none [4]
Cavalier Adaptive Income Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading CAVALIER ADAPTIVE INCOME FUND
Objective [Heading] rr_ObjectiveHeading
INVESTMENT OBJECTIVES
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Cavalier Adaptive Income Fund (the "Fund") seeks total return through a combination of capital appreciation and current income.
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 and hold shares of the Fund:
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption
Shareholder Fees
(fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination September 30, 2019
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading

Portfolio Turnover. 

Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance.  During the most recent fiscal year, the Fund's portfolio turnover rate was 110.84% of the average value of its portfolio.  

Portfolio Turnover, Rate rr_PortfolioTurnoverRate 110.84%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The "Total Annual Fund Operating Expenses" and "Net Annual Fund Operating Expenses" will not match the Fund's gross and net expense ratios reported in the Financial Highlights from the Fund's financial statements, which reflect the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses.
Expense Example [Heading] rr_ExpenseExampleHeading

Example:  

Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.  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 the Fund's operating expenses remain the same.  The Example includes the Fund's contractual expense limitation through September 30, 2019.  Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption

You would pay the following expenses if you did not redeem your shares:

Strategy [Heading] rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund's portfolio managers seek to achieve the Fund's investment objective of total return by investing primarily in fixed income securities. These investments may include mortgage backed securities, asset backed securities, commercial mortgage backed securities, non-agency mortgage backed securities, corporate investment grade securities, convertible securities, high yield, high risk bonds (commonly known as "junk bonds"), securities issued or guaranteed by certain U.S. Government agencies, instrumentalities and sponsored enterprises, and global debt securities. The Fund may also invest in mutual, exchange-traded, and/or closed end funds that are registered under the Investment Company Act of 1940 , as amended (the "1940 Act") and not affiliated with the Fund ("Portfolio Funds") or by making investments in certain Master Limited Partnerships ("MLPs") or Limited Partnership structures. The Fund may also invest in shares of Real Estate Investment Trusts ("REITs"), Energy MLPs, and preferred equity. The Fund is considered "diversified" under the 1940 Act .
 
The Fund may invest in mortgage-related high-yield (high risk) instruments rated below investment grade (commonly referred to as "junk bonds") with up to 15% of the Fund's assets. Below investment grade securities are securities that are rated below BBB- by S&P Global Ratings or Baa3 by Moody's Investors Service, Inc. or are comparably rated by another Nationally Recognized Statistical Rating Organization ("NRSRO") or, if unrated, determined by the Advisor to be of comparable quality.
 
The investments of the Portfolio Funds will be comprised primarily of fixed income securities, principally focusing on income producing investments including high yield investments (or "junk bonds") and preferred securities, but may consist of global bonds, corporate debt securities, convertible securities, Treasury Inflation-Protected Securities (TIPS), and other treasuries. The Portfolio Funds may invest in fixed income securities of any maturity and any credit rating, including junk bonds, bonds of issuers in default, and unrated bonds. The Portfolio Funds do not have an established average portfolio duration and the average portfolio durations will vary.  The Portfolio Funds will not be limited in their investments by sector criteria, and may invest in foreign securities, including foreign securities in emerging markets. The Portfolio Funds in which the Fund invests will have an investment objective similar to the Fund's or will otherwise hold permitted investments under the Fund's investment policies. Although the Fund principally invests in Portfolio Funds with no sales related expenses or very low sales related expenses, the Fund is not precluded from investing in Portfolio Funds with sales-related expenses, redemption fees, and/or service fees.
 
The portfolio managers will sell  a portfolio security or a Portfolio Fund when a more attractive investment opportunity is identified or the Fund's portfolio needs to be rebalanced.  As a result of this strategy, the Fund may have a relatively high level of portfolio turnover compared to other mutual funds, which may affect the Fund's performance due to higher transactions cots and higher taxes.  Portfolio turnover will not be a limiting factor in making investment decisions.

 

Risk [Heading] rr_RiskHeading
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

 

The loss of your money is a principal risk of investing in the Fund.  Investments in the Fund are subject to investment risks, including the possible loss of some or the entire principal amount invested. There can be no assurance that the Fund will be successful in meeting its investment objective. An investment in the Fund is not a deposit or obligation of any bank, is not endorsed or guaranteed by any bank, and is not insured by the Federal Deposit Insurance Corporation or any other government agency. The Fund will be subject to the following principal risks:

 

Acquired Fund Risk. Investments in other investment companies subject the Fund to additional operating and management fees and expenses.  Investors in the Fund will indirectly bear fees and expenses charged by the funds in which the Fund invests, in addition to the Fund's direct fees and expenses.  The Fund's performance depends in part upon the performance of the investment advisor to each Portfolio Fund, the strategies and instruments used by the Portfolio Funds, and the Advisor's ability to select Portfolio Funds and effectively allocate fund assets among them.

 

Asset-Backed Securities Investment Risk. Asset-backed securities risk is the risk that borrowers may default on the obligations that underlie the asset-backed security and that, during periods of falling interest rates, asset-backed securities may be called or prepaid, which may result in the Fund having to reinvest proceeds in other investments at a lower interest rate, and the risk that the impairment of the value of the collateral underlying a security in which the Fund invests (due, for example, to non-payment of loans) will result in a reduction in the value of the security.

 

Closed-End Fund Risk.  Closed-end funds involve investment risks different from those associated with other investment companies. First, the shares of closed-end funds frequently trade at a premium or discount relative to their net asset value.  When the Fund purchases shares of a closed-end fund at a discount to its net asset value, there can be no assurance that the discount will decrease, and it is possible that the discount may increase and affect whether the Fund will a realize gain or loss on the investment.  Second, many closed-end funds use leverage, or borrowed money, to try to increase returns. Leverage is a speculative technique and its use by a closed-end fund entails greater risk and leads to a more volatile share price.  If a close-end fund uses leverage, increases and decreases in the value of its share price will be magnified.  The closed-end fund will also have to pay interest or dividends on its leverage, reducing the closed-end fund's return.  Third, many closed-end funds have a policy of distributing a fixed percentage of net assets regardless of the fund's actual interest income and capital gains.  Consequently, distributions by a closed-end fund may include a return of capital, which would reduce the fund's net asset value and its earnings capacity.  Finally, closed-end funds are allowed to invest in a greater amount of illiquid securities than open-end mutual funds.  Investments in illiquid securities pose risks related to uncertainty in valuations, volatile market prices, and limitations on resale that may have an adverse effect on the ability of the fund to dispose of the securities promptly or at reasonable prices.

 

Control of Portfolio Funds Risk.  The Portfolio Funds each have their own unique investment objective, strategies, and risks.  There is no guarantee that the Portfolio Funds will achieve their investment objectives and the Fund has exposure to the investment risks of the Portfolio Funds in direct proportion to the allocation of assets among the funds.  The investment policies of the Portfolio Funds may differ from the Fund's policies.  Although the Fund and the Advisor will evaluate regularly each Portfolio Fund to determine whether its investment program is consistent with the Fund's investment objective, the Advisor will not have any control over the investments made by a Portfolio Fund. The investment advisor to each Portfolio Fund may change aspects of its investment strategies at any time.  The Advisor will not have the ability to control or otherwise influence the composition of the investment portfolio of a Portfolio Fund.

 

Convertible Securities Risk.  Convertible securities are fixed income securities that the Fund or a Portfolio Fund has the option to exchange for equity securities at a specified conversion price.  The option allows the Fund or a Portfolio Fund to realize additional returns if the market price of the equity securities exceeds the conversion price.  Convertible securities have lower yields than comparable fixed income securities and may provide lower returns than non-convertible fixed income securities or equity securities depending upon changes in the price of the underlying equity securities.

 

Corporate Debt Securities Risk.  The Fund and Portfolio Funds may invest in corporate debt securities.  Corporate debt securities are fixed income securities issued by businesses.  Notes, bonds, debentures, and commercial paper are the most prevalent types of corporate debt securities.  The credit risks of corporate debt securities vary widely among issuers.  In addition, the credit risk of an issuer's debt security may vary based on its priority for repayment, meaning that issuers might not make payments on subordinated securities while continuing to make payments on senior securities or, in the event of bankruptcy, holders of senior securities may receive amounts otherwise payable to the holders of subordinated securities.

 

Credit Risk. Credit risk refers to the risk that an issuer or counterparty will fail to pay its obligations to the Fund when they are due. As a result, the Fund's income might be reduced, the value of the Fund's investment might fall, and/or the Fund could lose the entire amount of its investment. Changes in the financial condition of an issuer or counterparty, changes in specific economic, social, or political conditions that affect a particular type of security or other instrument or an issuer, and changes in economic, social or political conditions generally can increase the risk of default by an issuer or counterparty, which can affect a security's or other instrument's credit quality or value and an issuer's or counterparty's ability to pay interest and principal when due. The values of lower-quality debt securities (commonly known as "junk bonds") tend to be particularly sensitive to these changes.

 

Cybersecurity Risk. As part of its business, the Advisor processes, stores and transmits large amounts of electronic information, including information relating to the transactions of the Fund. The Advisor and the Fund are therefore susceptible to cybersecurity risk. Cybersecurity failures or breaches of the Fund or its service providers have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties and/or reputational damage. The Fund and its shareholders could be negatively impacted as a result.

 

Derivatives Risk.  While the Fund will not use derivative instruments, the Portfolio Funds held by the Fund may use derivative instruments, which derive their value from the value of an underlying security, currency, or index.  Derivative instruments involve risks different from direct investments in the underlying assets, including: imperfect correlation between the value of the derivative instrument and the underlying assets; risks of default by the other party to the derivative instrument; risks that the transactions may result in losses of all or in excess of any gain in the portfolio positions; and risks that the transactions may not be liquid.

 

Energy Sector Risk. MLPs and other entities operating in the energy sector may be affected by fluctuations in the prices of energy commodities, including, for example, natural gas, natural gas liquids, crude oil and coal, in the short- and long-term. MLPs and other entities engaged in the exploration, development, management or production of energy commodities face the risk that commodity reserves are depleted over time. Such companies seek to increase their reserves through expansion of their current businesses, acquisitions, further development of their existing sources of energy commodities, exploration of new sources of energy commodities or by entering into long-term contracts for additional revenues; however, there are risks associated with each of these potential strategies. MLPs and other entities operating in the energy sector may also be adversely affected by reductions in the supply of or demand for energy commodities. The energy sector is highly regulated and MLPs and other entities operating in the energy sector are subject to significant regulation of nearly every aspect of their operations by federal, state and local governmental agencies.

 

ETFs Risk.  The Fund's investment in exchange-traded funds ("ETFs") may subject the Fund to additional risks than if the Fund would have invested directly in the ETF's underlying securities. These risks include the possibility that an ETF may experience a lack of liquidity that can result in greater volatility than its underlying securities; an ETF may trade at a premium or discount to its net asset value; or an ETF may not replicate exactly the performance of the benchmark index it seeks to track. In addition, investing in an ETF may also be more costly than if a Fund had owned the underlying securities directly. The Fund, and indirectly, shareholders of the Fund, bear a proportionate share of the ETF's expenses, which include management and advisory fees and other expenses. In addition, the Fund will pay brokerage commissions in connection with the purchase and sale.

 

Fixed Income Risk.  Investments by the Fund and Portfolio Funds in fixed income securities will subject the Fund to the risks associated with such investments.  The prices of these securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers.  Fixed income securities tend to decrease in value if interest rates rise and vice versa, and the volatility of lower-rated securities is even greater than that of higher-rated securities.  Also, longer-term securities are more volatile, so the average maturity or duration of these securities affects risk.  Credit risk is the possibility that an issuer will fail to make timely payments of interest or principal or go bankrupt.  The lower the rating of a debt security, the greater its risks. Debt instruments rated below investment grade or debt instruments that are unrated and determined by the Advisor to be of comparable quality are predominantly speculative. These instruments, commonly known as "junk bonds," have a higher degree of default risk and may be less liquid than higher-rated bonds. These instruments may be subject to greater price volatility due to such factors as specific corporate developments, interest rate sensitivity, negative perceptions of high yield investments generally, and less secondary market liquidity.

 

Foreign Securities and Emerging Markets Risk.  The Fund and Portfolio Funds may have significant investments in foreign securities, which have investment risks different from those associated with domestic securities.  The value of foreign investments may be affected by the value of the local currency relative to the U.S. dollar, changes in exchange control regulations, application of foreign tax laws, changes in governmental economic or monetary policy, or changed circumstances in dealings between nations.  There may be less government supervision of foreign markets, resulting in non-uniform accounting practices and less publicly available information about issuers of foreign securities.  In addition, foreign brokerage commissions, custody fees, and other costs of investing in foreign securities are often higher than in the United States.  Investments in foreign issues could be affected by other factors not present in the United States, including expropriation, armed conflict, confiscatory taxation, and potential difficulties in enforcing contractual obligations.  In addition to the risks of foreign securities in general, countries in emerging markets are more volatile and can have relatively unstable governments, social and legal systems that do not protect shareholders, economies based on only a few industries, and securities markets that trade a small number of issues which could reduce liquidity.

 

High-Yield Risk.  The Fund and Portfolio Funds may invest in junk bonds, including bonds of issuers in default, and other fixed income securities that are rated below investment grade.  Securities in this rating category are speculative and are usually issued by companies without long track records of sales and earnings, or by those companies with questionable credit strength.  Changes in economic conditions or other circumstances may have a greater effect on the ability of issuers of these securities to make principal and interest payments than they do on issuers of higher grade securities.  The retail secondary market for junk bonds may be less liquid than that of higher-rated securities and adverse conditions could make it difficult at times to sell certain securities or could result in lower prices.  Additionally, these instruments are unsecured and may be subordinated to other creditor's claims.

 

Inflation Risk.  Fixed income securities held by the Fund and Portfolio Funds are subject to inflation risk.  Because inflation reduces the purchasing power of income produced by existing fixed income securities, the prices at which fixed income securities trade will be reduced to compensate for the fact that the income they produce is worth less.  This potential decrease in market value of fixed income securities would result in a loss in the value of the Fund's portfolio.

 

Interest Rate Risk.  Interest rates may rise resulting in a decrease in the value of the fixed income securities held by the Fund and Portfolio Funds or may fall resulting in an increase in the value of such securities.  Fixed income securities with longer maturities involve greater risk than those with shorter maturities.

 

Investment Advisor Risk.  The Advisor's ability to choose suitable investments has a significant impact on the ability of the Fund to achieve its investment objectives. The Advisor became a registered investment advisor with the U.S. Securities and Exchange Commission (the "SEC") in 2015. The Advisor does not have previous experience managing an investment company registered under the 1940 Act. The portfolio managers' experience is discussed in the section of this prospectus entitled "Management of the Funds – Investment Advisor."

 

Leverage Risk.  While the Fund will not utilize leverage (i.e., borrowing) when making investments, the Portfolio Funds held by the Fund may utilize leverage to acquire their underlying portfolio investments.  The use of leverage may exaggerate changes in a Portfolio Fund's share price and the return on its investments.  Accordingly, the value of the Fund's investments in Portfolio Funds may be more volatile and all other risks, including the risk of loss of an investment, tend to be compounded or magnified.  Borrowing also leads to additional interest expense and other fees that increase the Portfolio Fund's expenses.

 

Liquidity Risk. The Fund may be unable to sell a portfolio investment at a desirable time or at the value the Fund has placed on the investment. Illiquidity may be the result of, for example, low trading volume, lack of a market maker, or contractual or legal restrictions that limit or prevent the Fund from selling securities. The values of illiquid investments are often more volatile than the values of more liquid investments. It may be more difficult for the Fund to determine a fair value of an illiquid investment.

 

Market Risk.  Market risk refers to the possibility that the value of securities held by the Fund may decline due to daily fluctuations in the market.  Market prices for securities change daily as a result of many factors, including developments affecting the condition of both individual companies and the market in general.  The price of a security may even be affected by factors unrelated to the value or condition of its issuer, including changes in interest rates, economic and political conditions, and general market conditions.  The Fund's performance per share will change daily in response to such factors.

 

MLPs Risk. An investment in MLPs involves risk that differ from a similar investment in equity securities, such as common stock, of a corporation. Holders of equity securities issued by MLPs have the rights typically afforded to limited partners in a limited partnership. As compared to common shareholders of a corporation, holders of such equity securities have more limited control and limited rights to vote on matters affecting the partnership. In addition, certain MLPs in which the Fund may invest depend upon their parent or sponsor entities for the majority of their revenues. If their parent or sponsor entities fail to make such payments or satisfy their obligations, the revenues and cash flows of such MLPs and ability of such MLPs to make distributions to unit holders, such as the Fund, would be adversely affected.

 

Mortgage-Backed Securities Risk. Mortgage-backed securities risk refers to the risk that borrowers may default on their mortgage obligations or the guarantees underlying the mortgage-backed securities will default or otherwise fail and that, during periods of falling interest rates, mortgage-backed securities will be called or prepaid, which may result in the Fund having to reinvest proceeds in other investments at a lower interest rate. During periods of rising interest rates, the average life of a mortgage-backed security may extend, which may lock in a below-market interest rate, increase the security's duration, and reduce the value of the security.

 

Portfolio Turnover Risk.  The Advisor will sell Portfolio Funds and other securities when it is in the best interest of the Fund and its shareholders to do so without regard to the length of time they have been held.  As portfolio turnover may involve paying brokerage commissions and other transaction costs, there could be additional expenses for the Fund.  High rates of portfolio turnover may also result in the realization of short-term capital gains and losses.  Any distributions resulting from such gains will be considered ordinary income for federal income tax purposes.

 

Preferred Equity Risk.  Preferred equity's right to dividends and liquidation proceeds is junior to the rights of a company's debt securities. The value of preferred equity may be subject to factors that affect fixed income and equity securities, including changes in interest rates and in a company's creditworthiness. The value of preferred equity tends to vary more with fluctuations in the underlying common equity and less with fluctuations in interest rates and tends to exhibit greater volatility. Shareholders of preferred equity may suffer a loss of value if dividends are not paid and have limited voting rights.

 

REIT Risk. Investing in REITs involves certain unique risks in addition to those associated with the real estate sector generally, including poor performance by the REIT's manager, adverse changes to the tax laws, and the possible failure by the REIT to qualify for the favorable tax treatment available to REITs under the Internal Revenue Code of 1986, as amended or the exemption from registration under the 1940 Act. REITs are not diversified and are heavily dependent on cash flow.  REITs whose underlying properties are concentrated in a particular industry or region are also subject to risks affecting such industries and regions. REITs (especially mortgage REITs) are also subject to interest rate risks. By investing in REITs through the Fund, a shareholder will bear expenses of the REITs in addition to Fund expenses.

 

Risks from Treasury Inflation-Protected Securities.  The Fund and Portfolio Funds may invest in Treasury Inflation-Protected Securities ("TIPS"), special types of treasury bonds that offer protection from inflation.  The values of TIPS are automatically adjusted to the inflation rate as measured by the Consumer Price Index (CPI).  With inflation (a rise in the CPI), the principal increases; with deflation (a drop in the CPI), the principal decreases.  When TIPS mature, the Fund or Portfolio Funds are paid the adjusted principal or original principal, whichever is greater.  TIPS decline in value when real interest rates rise.  However, in certain interest rate environments, like when real interest rates are rising faster than nominal interest rates, TIPS may experience greater losses than other fixed income securities with similar duration.

 

Short Sales Risk.  While the Fund will not short individual securities, the Portfolio Funds held by the Fund may sell securities short.  A short sale is a transaction in which the Portfolio Fund sells a security it does not own but has borrowed in anticipation that the market price of the security will decline.  The Portfolio Fund must replace the borrowed security by purchasing it at the market price at the time of replacement, which may be more or less than the price at which the Portfolio Fund sold the security.

 

U.S. Government Securities Risk. U.S. government securities risk refers to the risk that debt securities issued or guaranteed by certain U.S. Government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. Government, and so investments in their securities or obligations issued by them involve credit risk greater than investments in other types of U.S. Government securities.

Risk Lose Money [Text] rr_RiskLoseMoney The loss of your money is a principal risk of investing in the Fund. 
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading
PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance for the periods shown below prior to February 12, 2018, is based on the prior investment strategy utilized by the Fund. The following bar chart and tables provide an indication of the risks of investing in the Fund by showing changes in the Fund's Institutional Class Shares performance from year to year and by showing how the average annual total returns for each class compared to that of a broad-based securities market index. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future. Updated information on the Fund's results can be obtained by visiting http://www.ncfunds.com/fundpages/801.htm for the Institutional Class Shares , by visiting http://www.ncfunds.com/fundpages/803.htm for the Class C Shares , and by visiting http://www.ncfunds.com/fundpages/875.htm for the Class A Shares .
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart and tables provide an indication of the risks of investing in the Fund by showing changes in the Fund's Institutional Class Shares performance from year to year and by showing how the average annual total returns for each class compared to that of a broad-based securities market index.
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund's past performance is not necessarily an indication of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading
Institutional Class
Calendar Year Returns
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns Periods Ended December 31, 2017
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 are not applicable to investors who hold Fund shares through tax-deferred arrangements such as a 401(k) plan or an individual retirement account (IRA).
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only one class of shares and after-tax returns will vary for other classes.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock
[1] The expense information in the table has been restated to reflect current fees rather than the fees in effect during the previous fiscal year.
[2] "Acquired Fund" means any investment company in which the Fund invests or has invested during the previous fiscal year. The "Total Annual Fund Operating Expenses" and "Net Annual Fund Operating Expenses" will not match the Fund's gross and net expense ratios reported in the Financial Highlights from the Fund's financial statements, which reflect the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses.
[3] Cavalier Investments, LLC, the investment advisor to the Fund (the "Advisor"), has entered into an Expense Limitation Agreement with the Fund under which it has agreed to waive or reduce its fees and to assume other expenses of the Fund, if necessary, in an amount that limits the Fund's annual operating expenses (exclusive of interest, taxes, brokerage fees and commissions, extraordinary expenses, acquired fund fees and expenses, and payments under the Rule 12b-1 distribution plan) to not more than 1.25% of the average daily net assets of the Fund for each class of shares . Net annual operating expenses for the Fund may exceed these limits to the extent that it incurs expenses enumerated above as exclusions. The Expense Limitation Agreement runs through September 30, 2019 , and may be terminated by the Board of Trustees of the Fund (the "Board" or the "Trustees") . The Advisor cannot recoup from the Fund any amounts paid by the Advisor under the Expense Limitation Agreement.
[4] The Institutional Class Shares began operating on October 2, 2009. The Class C Shares began operating on February 18, 2011. The Class A Shares have not yet commenced operations. The performance of the Fund is attributable to its previous investment adviser until July 31, 2015.
[5] The Class A Shares have not yet commenced operations, and therefore will not have performance data to present for one calendar year.