Risk/Return: Document Type Document Period End Date Registrant Name Central Index Key Amendment Flag Document Creation Date Document Effective Date Prospectus Date Starboard investment trust [Abstract] Prospectus: Risk/Return [Heading] Objective [Heading] Objective, Primary [Text Block] Expense [Heading] Expense Narrative [Text Block] Shareholder Fees Caption [Text] Shareholder Fees [Table] Operating Expenses Caption [Text] Annual Fund Operating Expenses [Table] Expense Example [Heading] Expense Example Narrative [Text Block] Expense Example, With Redemption [Table] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption [Table] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Bar Chart [Heading] Bar Chart [Table] Bar Chart Closing [Text Block] Performance Table Heading Performance [Table] Performance Table Narrative Shareholder Fees: Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) Maximum Deferred Sales Charge (as a percentage) Maximum Deferred Sales Charge (Load) (as a % of the lesser of amount purchased or redeemed) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (as a % of amount redeemed; charged upon redemption of shares within 30 days of the issuance of such shares) Redemption Fee (as a % of amount redeemed) Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Operating Expenses: Management Fees (as a percentage of Assets) Management Fees Distribution and Service (12b-1) Fees Distribution and/or Service (12b-1) Fees Other Expenses (as a percentage of Assets): Other Expenses Other Expenses Acquired Fund Fees and Expenses Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Fee Waiver or Reimbursement Less Fee Waiver and/or Expense Limitation Net Expenses (as a percentage of Assets) Net Annual Fund Operating Expenses Expense Example: Expense Example, with Redemption, 1 Year 1 Year Expense Example, with Redemption, 3 Years 3 Years Expense Example, with Redemption, 5 Years 5 Years Expense Example, with Redemption, 10 Years 10 Years Expense Example, No Redemption: Expense Example, No Redemption, 1 Year 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 5 Years 5 Years Expense Example, No Redemption, 10 Years 10 Years Bar Chart Table: Annual Return 2010 Annual Return 2011 Average Annual Return: 1 Year Past 1 Year Since Inception Inception Date Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Restated to Reflect Current [Text] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Risk Lose Money [Text] Performance Information Illustrates Variability of Returns [Text] Performance One Year or Less [Text] Performance Availability Website Address [Text] Performance Past Does Not Indicate Future [Text] Year to Date Return, Label Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return Highest Quarterly Return, Label Label Highest Quarterly Return, Date Highest Quarterly Return Lowest Quarterly Return, Label Label Lowest Quarterly Return, Date Lowest Quarterly Return Performance Table Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred Performance Table One Class of after Tax Shown [Text] Performance Measure [Axis] After Taxes On Distributions [Member] After taxes on distributions After Taxes On Distributions And Sales [Member] After taxes on distributions and sale of shares Series [Axis] Entity [Domain] Series S000026513 [Member] ISM Dynamic Growth Fund Share Class [Axis] Share Class [Domain] Share Classes S000026513 Class Parent [Member] ISM Dynamic Growth Fund Class Parent C000079606 [Member] Institutional Class Shares C000096728 [Member] Advisor Class Shares Performance Measure [Domain] Before Taxes Sp500TotalReturnReturnIndexMember Sp500 Total Return Return Index [Member] S&P 500 Total Return Return Index (reflects no deductions for fees and expenses) S000026514 [Member] ISM Dynamic Total Return Fund S000026514 Class Parent [Member] ISM Dynamic Total Return Fund Class Parent C000079607 [Member] Institutional Class Shares C000096729 [Member] Advisor Class Shares Barclays Capital US Aggregate Bond Index [Member] Barclays Capital Us Aggregate Bond Index [Member] Barclays Capital U.S. Aggregate Bond Index (reflects no deductions for fees and expenses) S000038302 [Member] ISM Non Traditional Fund S000038302 Class Parent [Member] ISM Non Traditional Fund Class Parent C000118203 [Member] Institutional Class Shares C000118204 [Member] Advisor Class Shares S000038303 [Member] ISM High Income Fund S000038303 Class Parent [Member] ISM High Income Fund Class Parent C000118205 [Member] Institutional Class Shares C000118206 [Member] Advisor Class Shares S000038304 [Member] ISM Strategic Equity Fund S000038304 Class Parent [Member] ISM Strategic Equity Fund Class Parent C000118207 [Member] Institutional Class Shares C000118208 [Member] Advisor Class Shares S000038305 [Member] ISM Strategic Fixed Income Fund S000038305 Class Parent [Member] ISM Strategic Fixed Income Fund Class Parent C000118209 [Member] Institutional Class Shares C000118210 [Member] Advisor Class Shares S000038306 [Member] ISM Global Alpha Tactical Fund S000038306 Class Parent [Member] ISM Global Alpha Tactical Fund Class Parent C000118212 [Member] Institutional Class Shares C000118211 [Member] Advisor Class Shares S000038307 [Member] ISM Tax Free Fund S000038307 Class Parent [Member] ISM Tax Free Fund Class Parent C000118213 [Member] Institutional Class Shares C000118214 [Member] Advisor Class Shares S000038308 [Member] ISM Dividend Income Fund S000038308 Class Parent [Member] ISM Dividend Income Fund Class Parent C000118215 [Member] Institutional Class Shares C000118216 [Member] Advisor Class Shares S000038309 [Member] ISM Premier Asset Management Fund S000038309 Class Parent [Member] ISM Premier Asset Management Fund Class Parent C000118217 [Member] Institutional Class Shares C000118218 [Member] Advisor Class Shares