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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Starboard Investment Trust
Prospectus Date rr_ProspectusDate Sep. 28, 2017
Cavalier Dynamic Growth 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 (12b1) Fees rr_DistributionAndService12b1FeesOverAssets none [1]
Interest on Securities Sold Short rr_Component1OtherExpensesOverAssets 0.05% [1],[2]
Other Expenses rr_OtherExpensesOverAssets 2.88% [1]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.05% [1],[3]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 3.98% [1]
Less Fee Waiver and/or Expense Limitation rr_FeeWaiverOrReimbursementOverAssets 2.63% [1],[4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Limitation rr_NetExpensesOverAssets 1.35% [1]
1 Year rr_ExpenseExampleYear01 $ 137
3 Years rr_ExpenseExampleYear03 971
5 Years rr_ExpenseExampleYear05 1,822
10 Years rr_ExpenseExampleYear10 4,025
1 Year rr_ExpenseExampleNoRedemptionYear01 137
3 Years rr_ExpenseExampleNoRedemptionYear03 971
5 Years rr_ExpenseExampleNoRedemptionYear05 1,822
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 4,025
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.ncfunds.com/fundpages/800.htm
Annual Return 2010 rr_AnnualReturn2010 9.57%
Annual Return 2011 rr_AnnualReturn2011 (3.87%)
Annual Return 2012 rr_AnnualReturn2012 13.55%
Annual Return 2013 rr_AnnualReturn2013 21.76%
Annual Return 2014 rr_AnnualReturn2014 3.84%
Annual Return 2015 rr_AnnualReturn2015 2.26%
Annual Return 2016 rr_AnnualReturn2016 2.85%
Year to Date Return, Label rr_YearToDateReturnLabel Year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2017
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 12.82%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Highest quarterly return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2010
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 8.93%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Lowest quarterly return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2011
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (12.80%)
Past 1 Year rr_AverageAnnualReturnYear01 2.85%
Since Inception rr_AverageAnnualReturnSinceInception 6.91% [5]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 02, 2009
Cavalier Dynamic Growth Fund | Institutional Class Shares | After taxes on distributions  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 1.41%
Since Inception rr_AverageAnnualReturnSinceInception 4.33% [5]
Cavalier Dynamic Growth Fund | Institutional Class Shares | After taxes on distributions and sale of shares  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 2.27%
Since Inception rr_AverageAnnualReturnSinceInception 4.48% [5]
Cavalier Dynamic Growth Fund | Institutional Class Shares | S&P Global Broad Market Index (reflects no deductions for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 8.84%
Since Inception rr_AverageAnnualReturnSinceInception 8.98% [5]
Cavalier Dynamic Growth 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 (12b1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00% [1]
Interest on Securities Sold Short rr_Component1OtherExpensesOverAssets 0.05% [1],[2]
Other Expenses rr_OtherExpensesOverAssets 2.88% [1]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.05% [1],[3]
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 4.98% [1]
Less Fee Waiver and/or Expense Limitation rr_FeeWaiverOrReimbursementOverAssets 2.63% [1],[4]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Limitation rr_NetExpensesOverAssets 2.35% [1]
1 Year rr_ExpenseExampleYear01 $ 338
3 Years rr_ExpenseExampleYear03 1,261
5 Years rr_ExpenseExampleYear05 2,284
10 Years rr_ExpenseExampleYear10 4,843
1 Year rr_ExpenseExampleNoRedemptionYear01 238
3 Years rr_ExpenseExampleNoRedemptionYear03 1,261
5 Years rr_ExpenseExampleNoRedemptionYear05 2,284
10 Years rr_ExpenseExampleNoRedemptionYear10 $ 4,843
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress http://www.ncfunds.com/fundpages/802.htm
Past 1 Year rr_AverageAnnualReturnYear01 1.81%
Since Inception rr_AverageAnnualReturnSinceInception 4.86% [5]
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 18, 2011
Cavalier Dynamic Growth Fund | Class C Shares | S&P Global Broad Market Index (reflects no deductions for fees and expenses)  
Risk/Return: rr_RiskReturnAbstract  
Past 1 Year rr_AverageAnnualReturnYear01 8.84%
Since Inception rr_AverageAnnualReturnSinceInception 6.21% [5]
Cavalier Dynamic Growth Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading
CAVALIER DYNAMIC GROWTH FUND
Objective [Heading] rr_ObjectiveHeading
INVESTMENT OBJECTIVES
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Cavalier  Dynamic Growth Fund seeks capital appreciation without regard to 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
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 159.52%
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.  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 sub-advisor, StratiFi, LLC ("StratFi"), seeks to achieve the Fund's investment objective of capital appreciation by buying and selling options in a strategy designed to complement a base of exchange traded funds ("ETFs") and mutual funds.. The Fund is considered "diversified" under the Investment Company Act of 1940.

 

StratiFi seeks to achieve the Fund's investment objective of capital appreciation by investing in ETFs and mutual funds that invest in global equities that StratiFi believes demonstrate compelling fundamental growth opportunities.

 

StratiFi will not be limited in their investments by market capitalization or sector criteria, and may invest in ETFs and mutual funds that invest in foreign securities, including foreign securities in emerging markets.

 

StratiFi will then engage in derivatives transactions based on the portfolio of ETFs and mutual funds. These trades will primarily be the purchase and sale of options.

Risk [Heading] rr_RiskHeading
PRINCIPAL RISKS OF INVESTING IN THE FUND
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.  The Fund will be subject to the following principal risks:

 

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.

 

Management Style Risk.  Different types of securities tend to shift into and out of favor with investors depending on market and economic conditions.  The returns from the types of Portfolio Funds and other securities purchased by the Fund (growth, value, etc.) may at times be better or worse than the returns from other types of funds.  Thus, the performance of the Fund may be better or worse than the performance of funds that focus on other types of investments, or that have a broader investment style.

 

Common Stock Risk.  Investments by the Fund and Portfolio Funds in shares of common stock may fluctuate in value response to many factors, including the activities of the individual issuers whose securities the Fund or Portfolio Fund owns, general market and economic conditions, interest rates, and specific industry changes.  Such price fluctuations subject the Fund to potential losses.  During temporary or extended bear markets, the value of common stocks will decline, which could also result in losses for the Fund.

 

Other Equity Securities Risk.  In addition to shares of common stock, the equity securities held by the Fund and Portfolio Funds may include preferred stocks, convertible preferred stocks, convertible bonds, and warrants.  Like shares of common stock, the value of these equity securities may fluctuate in response to many factors, including the activities of the issuer, general market and economic conditions, interest rates, and specific industry changes.  Also, regardless of any one company's particular prospects, a declining stock market may produce a decline in prices for all equity securities, which could also result in losses for the Fund.

 

Large-Cap Securities Risk.  Stocks of large companies as a group can fall out of favor with the market, causing the Fund to underperform investments that have a greater focus on mid-cap or small-cap stocks. Larger, more established companies may be slow to respond to challenges and may grow more slowly than smaller companies.

 

Small-Cap and Mid-Cap Securities Risk.  The Fund and Portfolio Funds may invest in securities of small-cap and mid-cap companies, which involve greater volatility than investing in larger and more established companies.  Small-cap and mid-cap companies can be subject to more abrupt or erratic share price changes than larger, more established companies.  Securities of these types of companies have limited market liquidity, and their prices may be more volatile.  You should expect that the value of the Fund's shares will be more volatile than a fund that invests exclusively in large-capitalization companies.

 

Sector Risk.  If the Fund and Portfolio Funds invest more heavily in a particular sector, the value of its shares may be especially sensitive to factors and economic risks that specifically affect that sector.  As a result, the Fund's share price may fluctuate more widely than the value of shares of a mutual fund that invests in a broader range of industries.

 

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.

 

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.

 

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.

 

Portfolio Turnover Risk.  The Advisor will sell Portfolio Funds and other securities when it is in the interests 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.

 

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 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."

 

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

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/800.htm for the Institutional Class Shares and by visiting http://www.ncfunds.com/fundpages/802.htm for the Class C 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
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns Periods Ended December 31, 2016
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
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 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).  After-tax returns are shown for only one class of shares and after-tax returns will vary for other classes.
[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] Interest on Securities Sold Short reflects interest expense on borrowed securities. Interest expense results from the Fund's use of prime brokerage arrangements to execute short sales. Such expenses are required to be treated as a Fund expense for accounting purposes and are not payable to the Fund or the Advisor. Any interest expense amount on securities sold short will vary based on the Fund's use of those investments.
[3] "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.
[4] 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 Institutional and Class C 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, 2018, and may not be terminated prior to that date except via action of the Trust's board of trustees. The Advisor cannot recoup from the Fund any amounts paid by the Advisor under the Expense Limitation Agreement.
[5] The Institutional Class Shares began operating on October 2, 2009. The Class C Shares began operating on February 18, 2011. The performance of the fund is attributable to its previous investment adviser until July 31, 2015.