fp0007588_485bpos-xbrl.htm

0001398344-13-003180.txt : 20130711 0001398344-13-003180.hdr.sgml : 20130711 20130711142421 ACCESSION NUMBER: 0001398344-13-003180 CONFORMED SUBMISSION TYPE: 485BPOS PUBLIC DOCUMENT COUNT: 7 FILED AS OF DATE: 20130711 DATE AS OF CHANGE: 20130711 EFFECTIVENESS DATE: 20130711 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Investment Managers Series Trust CENTRAL INDEX KEY: 0001318342 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1933 Act SEC FILE NUMBER: 333-122901 FILM NUMBER: 13963624 BUSINESS ADDRESS: STREET 1: 803 W. MICHIGAN ST. CITY: MILWAUKEE STATE: WI ZIP: 53233 BUSINESS PHONE: 626-914-4141 MAIL ADDRESS: STREET 1: 803 W. MICHIGAN ST. CITY: MILWAUKEE STATE: WI ZIP: 53233 FORMER COMPANY: FORMER CONFORMED NAME: Claymore Trust DATE OF NAME CHANGE: 20050603 FORMER COMPANY: FORMER CONFORMED NAME: Claymore Equity Trust DATE OF NAME CHANGE: 20050218 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Investment Managers Series Trust CENTRAL INDEX KEY: 0001318342 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-21719 FILM NUMBER: 13963625 BUSINESS ADDRESS: STREET 1: 803 W. MICHIGAN ST. CITY: MILWAUKEE STATE: WI ZIP: 53233 BUSINESS PHONE: 626-914-4141 MAIL ADDRESS: STREET 1: 803 W. MICHIGAN ST. CITY: MILWAUKEE STATE: WI ZIP: 53233 FORMER COMPANY: FORMER CONFORMED NAME: Claymore Trust DATE OF NAME CHANGE: 20050603 FORMER COMPANY: FORMER CONFORMED NAME: Claymore Equity Trust DATE OF NAME CHANGE: 20050218

0001318342 S000041272 Oak Ridge Dividend Growth Fund

C000127940 Class A ORDAX

C000127941 Class I ORDNX

0001318342 S000041273 Oak Ridge Growth Opportunity Fund

C000127942 Class A OGOAX

C000127943 Class I OGOIX

485BPOS 1 fp0007588_485bpos-xbrl.htm fp0007588_485bpos-xbrl.htm

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON July 11, 2013

REGISTRATION NOS. 333 -122901

811 -21719

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	[ ]
PRE-EFFECTIVE AMENDMENT NO.	[ ]
POST-EFFECTIVE AMENDMENT NO. 375	[X]
AND/OR

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	[ ]
AMENDMENT NO. 386	[X]

INVESTMENT MANAGERS SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

803 West Michigan Street

Milwaukee, WI 53233

(Address of Principal Executive Offices, including Zip Code)

Registrant's Telephone Number, Including Area Code: (414) 299-2295

Constance Dye Shannon

UMB Fund Services, Inc.

803 West Michigan Street

Milwaukee, WI 53233

(Name and Address of Agent for Service)

COPIES TO:

Michael Glazer

Bingham McCutchen LLP

355 South Grand Avenue, Suite 4400

Los Angeles, CA 90071-3106

It is proposed that this filing will become effective (check appropriate box):

[X]

immediately upon filing pursuant to paragraph (b) of Rule 485; or

[ ]

on ______________, pursuant to paragraph (b) of Rule 485; or

[ ]

60 days after filing pursuant to paragraph (a)(1) of Rule 485;

[ ]

on ______________ pursuant to paragraph (a)(1) of Rule 485; or

[ ]

75 days after filing pursuant to paragraph (a)(2) of Rule 485; or

[ ]

on ______________ pursuant to paragraph (a)(2) of Rule 485; or

[ ]

on ______________ pursuant to paragraph (a)(3) of Rule 485.

If appropriate, check the following box:

[ ]	This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Oak Ridge Fund - XBRL

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Milwaukee and State of Wisconsin, on the 11th day of July, 2013.

	INVESTMENT MANAGERS SERIES TRUST

	By:
		John P. Zader, President

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed on the 11th day of July, 2013, by the following persons in the capacities set forth below.

Signature		Title
†
Ashley Toomey Rabun		Trustee
†
William H. Young		Trustee
†
Charles H. Miller		Trustee

John P. Zader		Trustee and President
†
Eric M. Banhazl		Trustee and Vice President
Rita Dam		Treasurer and Principal Financial and Accounting Officer

† By
Attorney-in-fact, pursuant to power of attorney previously filed
with Post-Effective Amendment No. 31 on February 1, 2008.

EXHIBIT INDEX

Exhibit	Exhibit No.
XBRL Instance Document	EX-101.INS
XBRL Taxonomy Extension Schema Document	EX-101.SCH
XBRL Taxonomy Extension Calculation Linkbase	EX-101.CAL
XBRL Taxonomy Extension Definition Linkbase	EX-101.DEF
XBRL Taxonomy Extension Labels Linkbase	EX-101.LAB
XBRL Taxonomy Extension Presentation Linkbase	EX-101.PRE

EX-101.INS 2 imstoakridge-20130628.xml XBRL INSTANCE DOCUMENT 0001318342 2013-06-28 2013-06-28 0001318342 imstoakridge:S000041272Member 2013-06-28 2013-06-28 0001318342 imstoakridge:S000041272Member imstoakridge:C000127940Member 2013-06-28 2013-06-28 0001318342 imstoakridge:S000041272Member imstoakridge:C000127941Member 2013-06-28 2013-06-28 iso4217:USD pure shares iso4217:USD shares 0001318342 Investment Managers Series Trust 485BPOS false SUMMARY SECTION - OAK RIDGE DIVIDEND GROWTH FUND Investment Objective The Oak Ridge Dividend Growth Fund (the “Fund”) seeks to provide current income and long-term capital appreciation. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus. Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div> 0.0575 0.01 0 20.00 15.00 15.00 0 0 0 20.00 15.00 15.00 <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div> 0.0075 0.0025 0.01 0.0001 0.0201 -0.0075 0.0126 0.0075 0 0.01 0.0001 0.0176 -0.0075 0.0101 Example 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div> 696 1101 103 481 Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate. Principal Investment Strategies Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in equity securities that have a record of paying dividends. The Fund will invest primarily in mid-cap and large-cap U.S. companies with market capitalizations of $5 billion or higher at the time of initial purchase. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a bottom-up approach that involves quantitative and qualitative review of companies to seek to identify those exhibiting consistent dividend payments and favorable fundamentals, including a dividend payout ratio and earnings growth, that indicate an ability to sustain above average growth in dividends. The Fund’s advisor seeks a dividend yield that will be comparable to the S&P 500 Index average yield, with each stock evaluated as having the potential to increase future dividends at a rate above the S&P 500 Index. In addition, the Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations. Principal Risks of Investing The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid-Cap Company Risk . The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk. Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions. Performance The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year. ORDAX ORDNX You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. 50000 “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year. “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year. 2014-09-30 Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. 2013-06-28 2013-07-01 2013-07-01 2013-07-01 No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase. "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year. The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.25% and 1.00% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment. 0001318342 imstoakridge:S000041273Member 2013-06-28 2013-06-28 0001318342 imstoakridge:S000041273Member imstoakridge:C000127942Member 2013-06-28 2013-06-28 0001318342 imstoakridge:S000041273Member imstoakridge:C000127943Member 2013-06-28 2013-06-28 SUMMARY SECTION - OAK RIDGE GROWTH OPPORTUNITY FUND Investment Objectives The Oak Ridge Growth Opportunity Fund (the “Fund”) seeks to provide long-term capital appreciation. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus. Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div> 0.0575 0.01 0 20.00 15.00 15.00 0 0 0 20.00 15.00 15.00 <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div> 0.0075 0.0025 0.01 0.0001 0.0201 -0.006 0.0141 0.0075 0 0.01 0.0001 0.0176 -0.006 0.0116 Example 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be: <div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div> 710 1115 118 496 Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate. Principal Investment Strategies Under normal circumstances, the Fund primarily invests in equity securities of companies with market capitalizations within the range of those companies included in the Russell Mid Cap Growth Index at the time of purchase. As of March 31, 2013, the market capitalizations of companies included in the Russell Mid Cap Growth Index were between $418 million and $2 5 billion. Investments in companies that move above or below the capitalization range of the Russell Mid Cap Growth Index after purchase may continue to be held by the Fund at the Fund advisor’s sole discretion. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations. Principal Risks of Investing The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid- Cap Company Risk. The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk . Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions. Performance The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year. OGOAX OGOIX You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. 50000 “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year. “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year. 2014-09-30 Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase. "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year. The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.40% and 1.15% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment. EX-101.SCH 3 imstoakridge-20130628.xsd XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT EX-101.CAL 4 imstoakridge-20130628_cal.xml XBRL TAXONOMY EXTENSION CALCULATION LINKBASE EX-101.DEF 5 imstoakridge-20130628_def.xml XBRL TAXONOMY EXTENSION DEFINITION LINKBASE EX-101.LAB 6 imstoakridge-20130628_lab.xml XBRL TAXONOMY EXTENSION LABELS LINKBASE Share Class [Axis] Performance Measure [Axis] Prospectus [Table] All Classes Average Annual Return, Column Name Series [Axis] All Series All Prospectus Prospectus [Axis] Creation Date Effective Date Period End Date Trading Symbol Expense Example, 1 YEAR Expense Example, No Redemption, 1 YEAR Expense Example, 3 YEARS Expense Example, No Redemption, 3 YEARS Expense Example, 5 YEARS Expense Example, No Redemption, 5 YEARS Expense Example, 10 YEARS Expense Example, No Redemption, 10 YEARS 1 Year 1 Year 3 Years 3 Years 5 Years 5 Years 10 Years 10 Years CIK Registrant Name Document Type Amendment Am.Description Prospectus Date Wire fee Overnight check delivery fee S000041272Member Oak Ridge Dividend Growth Fund S000041273Member Oak Ridge Growth Opportunity Fund C000127940Member Class A Shares C000127941Member Class I Shares C000127942Member Class A Shares C000127943Member Class I Shares Risk/Return: Risk/Return Investment objective: Investment objective Secondary objectives Fees and expenses of the fund: Fees and expenses of the fund, narrative Shareholder fees, caption Shareholder fees, table Maximum sales charge (load) imposed on purchases (as percentage of offering price) Maximum Cumulative Sales Charge / Other Maximum sales charge (load) imposed on purchases (as a percentage of offering price) Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) Maximum deferred sales charge (as a percentage of the amount redeemed) Maximum sales charge (load) imposed on reinvested dividends Redemption fee (as a percentage of amount redeemed) Redemption fee (as a percentage of amount redeemed) Redemption fee (as a percentage of amount redeemed) Redemption Fee Exchange Fee (as a percentage of net assets) Exchange Fee Maximum Account Fee (as a percentage of net assets) Maximum annual account fee Retirement account fees (annual maintenance and full redemption requests) Annual fund operating expenses, heading Annual fund operating expenses, table Management fees Distribution (Rule 12b-1) fee Distribution or similar (non 12b-1) Fees (as a percentage of net assets) Other Expenses, Component 1 (as a percentage of net assets) Other Expenses, Component 2 (as a percentage of net assets) Other Expenses, Component 3 (as a percentage of net assets) Other expenses (includes shareholder services fee of up to 0.15%) Acquired fund fees and expenses Total annual fund operating expenses Fee waiver and/or expense reimbursement Total annual fund operating expenses after fee waiver and/or expense reimbursement Portfolio turnover, heading Portfolio turnover, narrative Portfolio Turnover 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Return, Label Year to Date Return, Date Year to Date Return Highest Quarterly Return, Label Highest Quarterly Return Date Highest Quarterly Return Lowest Quarterly Return, Label Lowest Quarterly Return Date Lowest Quarterly Return Performance Table: Performance Table Narrative Average Annual Return Caption Performance Table 1 Year 5 Years 10 Years Since Inception Inception Date Before taxes - Return After Taxes on Distributions - Return After Taxes on Distributions and Sale of Fund Shares Market Index Performance Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period Performance Table Footnotes Performance Table Closing Performance Table Does Reflect Sales Loads Performance Table Market Index Changed Index No Deduction for Fees, Expenses, Taxes Performance Table Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred One Class of After-Tax Shown Performance Table Explains why after Tax Higher Money Market, 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The format of the date is CCYY-MM-DD.No definition available.false0Period End Date4false 2dei_EntityRegistrantNamedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment Managers Series Trustfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 false0Registrant Name5false 2dei_EntityCentralIndexKeydei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse000001318342falsefalsefalsedei:centralIndexKeyItemTypenaA unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 false0CIK6false 2dei_AmendmentFlagdei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsexbrli:booleanItemTypenaIf the value is true, then the document is an amendment to previously-filed/accepted document.No definition available.false0Amendment7false 2dei_DocumentCreationDatedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-07-01falsefalsetruexbrli:dateItemTypedateThe date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.No definition available.false0Creation Date8false 2dei_DocumentEffectiveDatedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-07-01falsefalsetruexbrli:dateItemTypedateThe date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.No definition available.false0Effective Date9false 2rr_ProspectusDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-06-28falsefalsetruexbrli:dateItemTypedateThe date of the prospectus.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 1 -Subsection a -Paragraph 3 false0Prospectus Date10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false USDtruefalse$imstoakridge_S000041272http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Dividend Growth Fund11true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:12false 2rr_RiskReturnHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SUMMARY SECTION - OAK RIDGE DIVIDEND GROWTH FUNDfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 false0Risk/Return13false 2rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment Objectivefalsefalsefalsexbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective:14false 2rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Oak Ridge Dividend Growth Fund (the “Fund”) seeks to provide current income and long-term capital appreciation.falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective15false 2rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expenses of the Fundfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Fees and expenses of the fund:16false 2rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Fees and expenses of the fund, narrative17false 2rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false0Shareholder fees, caption18false 2rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Annual fund operating expenses, heading19false 2rr_FeeWaiverOrReimbursementOverAssetsDateOfTerminationrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002014-09-30falsefalsefalsexbrli:stringItemTypestringThis element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph e false0Date Of Termination20false 2rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio Turnoverfalsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio turnover, heading21false 2rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio turnover, narrative22false 2rr_ExpenseBreakpointDiscountsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund.falsefalsefalsexbrli:stringItemTypestringInclude the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Expense Breakpoint Discounts23false 2rr_ExpenseBreakpointMinimumInvestmentRequiredAmountrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse5000050000USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis element represents the minimum level of investment required to qualify for discounted sales charges or fund expenses (SEC Form N-1A 2006-09-14 A.3.instructions.1.b).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false2Expense Breakpoint, Minimum Investment Required24false 2rr_OtherExpensesNewFundBasedOnEstimatesrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00“Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.falsefalsefalsexbrli:stringItemTypestringThis element represents the disclosure for new funds that "Other Expenses" are based on estimated amounts for the current fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 6 -Subparagraph a false0Other Expenses, New Fund, Based on Estimates25false 2rr_AcquiredFundFeesAndExpensesBasedOnEstimatesrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00“Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.falsefalsefalsexbrli:stringItemTypestringThis element represents a statement that "Acquired Fund" (as defined) fees and expenses for the current year are based on estimates.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph f -Clause vi false0Acquired Fund Fees and Expenses, Based on Estimates26false 2rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Example, heading27false 2rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example, Narrative28false 2rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Heading29false 2rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in equity securities that have a record of paying dividends. The Fund will invest primarily in mid-cap and large-cap U.S. companies with market capitalizations of $5 billion or higher at the time of initial purchase. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a bottom-up approach that involves quantitative and qualitative review of companies to seek to identify those exhibiting consistent dividend payments and favorable fundamentals, including a dividend payout ratio and earnings growth, that indicate an ability to sustain above average growth in dividends. The Fund’s advisor seeks a dividend yield that will be comparable to the S&P 500 Index average yield, with each stock evaluated as having the potential to increase future dividends at a rate above the S&P 500 Index. In addition, the Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Narrative30false 2rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risks of Investingfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk, Heading31false 2rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid-Cap Company Risk . The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk. Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk, Narrative32false 2rr_RiskLoseMoneyrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.falsefalsefalsexbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i false0May Lose Money33false 2rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table, Heading34false 2rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance, Narrative35false 2rr_PerformanceOneYearOrLessrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices.falsefalsefalsexbrli:stringItemTypestringFor a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance). Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph i Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 1 -Exhibit b false0Performance, One Year or Less36false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse3false USDtruefalse$imstoakridge_S000041272_C000127940http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127940Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Dividend Growth Fund | Class A Shares37true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:38false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ORDAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol39false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)40false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[1]falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)41false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)42false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee43false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee44false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)45false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees46false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee47false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[2]falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)48false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001[2]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses49false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02010.0201falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses50false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0075-0.0075[3]falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement51false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01260.0126[3]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement52false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue696696USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false2Expense Example, 1 YEAR53false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue11011101USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2Expense Example, 3 YEARS54false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse4false USDtruefalse$imstoakridge_S000041272_C000127941http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127941Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Dividend Growth Fund | Class I Shares55true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:56false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ORDNXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol57false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)58false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)59false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)60false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee61false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee62false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)63false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees64false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee65false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[2]falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)66false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001[2]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses67false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01760.0176falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses68false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0075-0.0075[3]falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement69false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01010.0101[3]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement70false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue103103USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false2Expense Example, 1 YEAR71false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue481481USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2Expense Example, 3 YEARS72false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse5false USDtruefalse$imstoakridge_S000041273http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Growth Opportunity Fund73true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:74false 2rr_RiskReturnHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SUMMARY SECTION - OAK RIDGE GROWTH OPPORTUNITY FUNDfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 false0Risk/Return75false 2rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment Objectivesfalsefalsefalsexbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective:76false 2rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Oak Ridge Growth Opportunity Fund (the “Fund”) seeks to provide long-term capital appreciation.falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective77false 2rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expenses of the Fundfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Fees and expenses of the fund:78false 2rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Fees and expenses of the fund, narrative79false 2rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false0Shareholder fees, caption80false 2rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Annual fund operating expenses, heading81false 2rr_FeeWaiverOrReimbursementOverAssetsDateOfTerminationrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002014-09-30falsefalsefalsexbrli:stringItemTypestringThis element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph e false0Date Of Termination82false 2rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio Turnoverfalsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio turnover, heading83false 2rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio turnover, narrative84false 2rr_ExpenseBreakpointDiscountsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund.falsefalsefalsexbrli:stringItemTypestringInclude the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Expense Breakpoint Discounts85false 2rr_ExpenseBreakpointMinimumInvestmentRequiredAmountrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse5000050000USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThis element represents the minimum level of investment required to qualify for discounted sales charges or fund expenses (SEC Form N-1A 2006-09-14 A.3.instructions.1.b).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false2Expense Breakpoint, Minimum Investment Required86false 2rr_OtherExpensesNewFundBasedOnEstimatesrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00“Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.falsefalsefalsexbrli:stringItemTypestringThis element represents the disclosure for new funds that "Other Expenses" are based on estimated amounts for the current fiscal year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 6 -Subparagraph a false0Other Expenses, New Fund, Based on Estimates87false 2rr_AcquiredFundFeesAndExpensesBasedOnEstimatesrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00“Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.falsefalsefalsexbrli:stringItemTypestringThis element represents a statement that "Acquired Fund" (as defined) fees and expenses for the current year are based on estimates.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph f -Clause vi false0Acquired Fund Fees and Expenses, Based on Estimates88false 2rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Example, heading89false 2rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example, Narrative90false 2rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Heading91false 2rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Under normal circumstances, the Fund primarily invests in equity securities of companies with market capitalizations within the range of those companies included in the Russell Mid Cap Growth Index at the time of purchase. As of March 31, 2013, the market capitalizations of companies included in the Russell Mid Cap Growth Index were between $418 million and $2 5 billion. Investments in companies that move above or below the capitalization range of the Russell Mid Cap Growth Index after purchase may continue to be held by the Fund at the Fund advisor’s sole discretion. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Narrative92false 2rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risks of Investingfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk, Heading93false 2rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid- Cap Company Risk. The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk . Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk, Narrative94false 2rr_RiskLoseMoneyrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.falsefalsefalsexbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i false0May Lose Money95false 2rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table, Heading96false 2rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance, Narrative97false 2rr_PerformanceOneYearOrLessrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices.falsefalsefalsexbrli:stringItemTypestringFor a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance). Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph i Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 1 -Exhibit b false0Performance, One Year or Less98false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse6false USDtruefalse$imstoakridge_S000041273_C000127942http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127942Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Growth Opportunity Fund | Class A Shares99true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:100false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00OGOAXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol101false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)102false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[1]falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)103false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)104false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee105false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee106false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)107false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees108false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee109false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[2]falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)110false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses111false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02010.0201falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses112false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.006-0.006[4]falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement113false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141[4]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement114false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue710710USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false2Expense Example, 1 YEAR115false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue11151115USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2Expense Example, 3 YEARS116false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse7false USDtruefalse$imstoakridge_S000041273_C000127943http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127943Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Oak Ridge Growth Opportunity Fund | Class I Shares117true 1rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:118false 2dei_TradingSymboldei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00OGOIXfalsefalsefalsexbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No definition available.false0Trading Symbol119false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)120false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)121false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)122false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee123false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee124false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)125false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees126false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee127false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[2]falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)128false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses129false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01760.0176falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses130false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.006-0.006[4]falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement131false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01160.0116[4]falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement132false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue118118USD$falsefalsefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false2Expense Example, 1 YEAR133false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue496496USD$falsetruefalserr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false2Expense Example, 3 YEARS1 No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase. 2 "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year. 3 The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.25% and 1.00% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment. 4 The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.40% and 1.15% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. 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Label Element Value

Risk/Return: rr_RiskReturnAbstract

Document Type dei_DocumentType 485BPOS

Period End Date dei_DocumentPeriodEndDate Jul. 01, 2013

Registrant Name dei_EntityRegistrantName Investment Managers Series Trust

CIK dei_EntityCentralIndexKey 0001318342

Amendment dei_AmendmentFlag false

Creation Date dei_DocumentCreationDate Jul. 01, 2013

Effective Date dei_DocumentEffectiveDate Jul. 01, 2013

Prospectus Date rr_ProspectusDate Jun. 28, 2013

Oak Ridge Dividend Growth Fund

Risk/Return: rr_RiskReturnAbstract

Risk/Return rr_RiskReturnHeading
SUMMARY SECTION - OAK RIDGE DIVIDEND GROWTH FUND

Investment objective: rr_ObjectiveHeading
Investment Objective

Investment objective rr_ObjectivePrimaryTextBlock
The Oak Ridge Dividend Growth Fund (the “Fund”) seeks to provide current income and long-term capital appreciation.

Fees and expenses of the fund: rr_ExpenseHeading
Fees and Expenses of the Fund

Fees and expenses of the fund, narrative rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.

Shareholder fees, caption rr_ShareholderFeesCaption
Shareholder Fees
(fees paid directly from your investment)

Annual fund operating expenses, heading rr_OperatingExpensesCaption
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Date Of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2014-09-30

Portfolio turnover, heading rr_PortfolioTurnoverHeading
Portfolio Turnover

Portfolio turnover, narrative 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 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.

Expense Breakpoint Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund.

Expense Breakpoint, Minimum Investment Required rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000

Other Expenses, New Fund, Based on Estimates rr_OtherExpensesNewFundBasedOnEstimates “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.

Acquired Fund Fees and Expenses, Based on Estimates rr_AcquiredFundFeesAndExpensesBasedOnEstimates “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.

Example, heading rr_ExpenseExampleHeading
Example

Expense Example, Narrative 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. 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 rr_StrategyNarrativeTextBlock
Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in equity securities that have a record of paying dividends. The Fund will invest primarily in mid-cap and large-cap U.S. companies with market capitalizations of $5 billion or higher at the time of initial purchase.

The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors.

The Fund’s advisor uses a bottom-up approach that involves quantitative and qualitative review of companies to seek to identify those exhibiting consistent dividend payments and favorable fundamentals, including a dividend payout ratio and earnings growth, that indicate an ability to sustain above average growth in dividends. The Fund’s advisor seeks a dividend yield that will be comparable to the S&P 500 Index average yield, with each stock evaluated as having the potential to increase future dividends at a rate above the S&P 500 Index. In addition, the Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.

Risk, Heading rr_RiskHeading
Principal Risks of Investing

Risk, Narrative rr_RiskNarrativeTextBlock
The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests.

Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests.

Mid-Cap Company Risk . The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general.

ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs.

Foreign Investment Risk. Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks.

Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market.

No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.

May Lose Money rr_RiskLoseMoney Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading
Performance

Performance, Narrative rr_PerformanceNarrativeTextBlock
The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.

Performance, One Year or Less rr_PerformanceOneYearOrLess The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices.

Oak Ridge Dividend Growth Fund | Class A Shares

Risk/Return: rr_RiskReturnAbstract

Trading Symbol dei_TradingSymbol ORDAX

Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%

Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% ^[1]

Redemption fee (as a percentage of amount redeemed) rr_RedemptionFeeOverRedemption none

Wire fee imstoakridge_WireFee 20.00

Overnight check delivery fee imstoakridge_CheckFee 15.00

Retirement account fees (annual maintenance and full redemption requests) rr_ShareholderFeeOther 15.00

Management fees rr_ManagementFeesOverAssets 0.75%

Distribution (Rule 12b-1) fee rr_DistributionAndService12b1FeesOverAssets 0.25%

Other expenses (includes shareholder services fee of up to 0.15%) rr_OtherExpensesOverAssets 1.00% ^[2]

Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01% ^[2]

Total annual fund operating expenses rr_ExpensesOverAssets 2.01%

Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.75%) ^[3]

Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.26% ^[3]

Expense Example, 1 YEAR rr_ExpenseExampleYear01 696

Expense Example, 3 YEARS rr_ExpenseExampleYear03 1,101

Oak Ridge Dividend Growth Fund | Class I Shares

Risk/Return: rr_RiskReturnAbstract

Trading Symbol dei_TradingSymbol ORDNX

Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none

Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) rr_MaximumDeferredSalesChargeOverOfferingPrice none

Redemption fee (as a percentage of amount redeemed) rr_RedemptionFeeOverRedemption none

Wire fee imstoakridge_WireFee 20.00

Overnight check delivery fee imstoakridge_CheckFee 15.00

Retirement account fees (annual maintenance and full redemption requests) rr_ShareholderFeeOther 15.00

Management fees rr_ManagementFeesOverAssets 0.75%

Distribution (Rule 12b-1) fee rr_DistributionAndService12b1FeesOverAssets none

Other expenses (includes shareholder services fee of up to 0.15%) rr_OtherExpensesOverAssets 1.00% ^[2]

Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01% ^[2]

Total annual fund operating expenses rr_ExpensesOverAssets 1.76%

Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.75%) ^[3]

Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.01% ^[3]

Expense Example, 1 YEAR rr_ExpenseExampleYear01 103

Expense Example, 3 YEARS rr_ExpenseExampleYear03 481

Oak Ridge Growth Opportunity Fund

Risk/Return: rr_RiskReturnAbstract

Risk/Return rr_RiskReturnHeading
SUMMARY SECTION - OAK RIDGE GROWTH OPPORTUNITY FUND

Investment objective: rr_ObjectiveHeading
Investment Objectives

Investment objective rr_ObjectivePrimaryTextBlock
The Oak Ridge Growth Opportunity Fund (the “Fund”) seeks to provide long-term capital appreciation.

Fees and expenses of the fund: rr_ExpenseHeading
Fees and Expenses of the Fund

Fees and expenses of the fund, narrative rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.

Shareholder fees, caption rr_ShareholderFeesCaption
Shareholder Fees
(fees paid directly from your investment)

Annual fund operating expenses, heading rr_OperatingExpensesCaption
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Date Of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2014-09-30

Portfolio turnover, heading rr_PortfolioTurnoverHeading
Portfolio Turnover

Portfolio turnover, narrative 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 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.

Expense Breakpoint Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund.

Expense Breakpoint, Minimum Investment Required rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 50,000

Other Expenses, New Fund, Based on Estimates rr_OtherExpensesNewFundBasedOnEstimates “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.

Acquired Fund Fees and Expenses, Based on Estimates rr_AcquiredFundFeesAndExpensesBasedOnEstimates “Other expenses” and “Acquired fund fees and expenses” have been estimated for the current fiscal year.

Example, heading rr_ExpenseExampleHeading
Example

Expense Example, Narrative 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. 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 rr_StrategyNarrativeTextBlock
Under normal circumstances, the Fund primarily invests in equity securities of companies with market capitalizations within the range of those companies included in the Russell Mid Cap Growth Index at the time of purchase. As of March 31, 2013, the market capitalizations of companies included in the Russell Mid Cap Growth Index were between $418 million and $2 5 billion. Investments in companies that move above or below the capitalization range of the Russell Mid Cap Growth Index after purchase may continue to be held by the Fund at the Fund advisor’s sole discretion.

The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors.

The Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.

Risk, Heading rr_RiskHeading
Principal Risks of Investing

Risk, Narrative rr_RiskNarrativeTextBlock
The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate or factors relating to specific companies in which the Fund invests.

Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests.

Mid- Cap Company Risk. The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general.

ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs.

Foreign Investment Risk . Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks.

Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market.

No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.

May Lose Money rr_RiskLoseMoney Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

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Performance

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Performance, One Year or Less rr_PerformanceOneYearOrLess The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices.

Oak Ridge Growth Opportunity Fund | Class A Shares

Risk/Return: rr_RiskReturnAbstract

Trading Symbol dei_TradingSymbol OGOAX

Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%

Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) rr_MaximumDeferredSalesChargeOverOfferingPrice 1.00% ^[1]

Redemption fee (as a percentage of amount redeemed) rr_RedemptionFeeOverRedemption none

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Overnight check delivery fee imstoakridge_CheckFee 15.00

Retirement account fees (annual maintenance and full redemption requests) rr_ShareholderFeeOther 15.00

Management fees rr_ManagementFeesOverAssets 0.75%

Distribution (Rule 12b-1) fee rr_DistributionAndService12b1FeesOverAssets 0.25%

Other expenses (includes shareholder services fee of up to 0.15%) rr_OtherExpensesOverAssets 1.00% ^[2]

Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%

Total annual fund operating expenses rr_ExpensesOverAssets 2.01%

Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.60%) ^[4]

Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.41% ^[4]

Expense Example, 1 YEAR rr_ExpenseExampleYear01 710

Expense Example, 3 YEARS rr_ExpenseExampleYear03 1,115

Oak Ridge Growth Opportunity Fund | Class I Shares

Risk/Return: rr_RiskReturnAbstract

Trading Symbol dei_TradingSymbol OGOIX

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Wire fee imstoakridge_WireFee 20.00

Overnight check delivery fee imstoakridge_CheckFee 15.00

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Management fees rr_ManagementFeesOverAssets 0.75%

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Other expenses (includes shareholder services fee of up to 0.15%) rr_OtherExpensesOverAssets 1.00% ^[2]

Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%

Total annual fund operating expenses rr_ExpensesOverAssets 1.76%

Fee waiver and/or expense reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.60%) ^[4]

Total annual fund operating expenses after fee waiver and/or expense reimbursement rr_NetExpensesOverAssets 1.16% ^[4]

Expense Example, 1 YEAR rr_ExpenseExampleYear01 118

Expense Example, 3 YEARS rr_ExpenseExampleYear03 $ 496

[1] No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase.

[2] "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year.

[3] The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.25% and 1.00% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment.

[4] The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.40% and 1.15% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment.

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Risk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.

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Oak Ridge Dividend Growth Fund

SUMMARY SECTION - OAK RIDGE DIVIDEND GROWTH FUND

Investment Objective

The Oak Ridge Dividend Growth Fund (the “Fund”) seeks to provide current income and long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees Oak Ridge Dividend Growth Fund (USD $)

Class A Shares

Class I Shares

Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 5.75% none

Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) 1.00% ^[1] none

Redemption fee (as a percentage of amount redeemed) none none

Wire fee 20.00 20.00

Overnight check delivery fee 15.00 15.00

Retirement account fees (annual maintenance and full redemption requests) 15.00 15.00

[1] No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase.

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Oak Ridge Dividend Growth Fund

Class A Shares

Class I Shares

Management fees 0.75% 0.75%

Distribution (Rule 12b-1) fee 0.25% none

Other expenses (includes shareholder services fee of up to 0.15%) ^[1] 1.00% 1.00%

Acquired fund fees and expenses ^[1] 0.01% 0.01%

Total annual fund operating expenses 2.01% 1.76%

Fee waiver and/or expense reimbursement ^[2] (0.75%) (0.75%)

Total annual fund operating expenses after fee waiver and/or expense reimbursement ^[2] 1.26% 1.01%

[1] "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year.

[2] The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.25% and 1.00% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment.

Example

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

Expense Example Oak Ridge Dividend Growth Fund (USD $)

1 Year

3 Years

Class A Shares
696 1,101

Class I Shares
103 481

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.

Principal Investment Strategies

Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in equity securities that have a record of paying dividends. The Fund will invest primarily in mid-cap and large-cap U.S. companies with market capitalizations of $5 billion or higher at the time of initial purchase.

The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors.

The Fund’s advisor uses a bottom-up approach that involves quantitative and qualitative review of companies to seek to identify those exhibiting consistent dividend payments and favorable fundamentals, including a dividend payout ratio and earnings growth, that indicate an ability to sustain above average growth in dividends. The Fund’s advisor seeks a dividend yield that will be comparable to the S&P 500 Index average yield, with each stock evaluated as having the potential to increase future dividends at a rate above the S&P 500 Index. In addition, the Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.

Principal Risks of Investing

The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests.

Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests.

Mid-Cap Company Risk . The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general.

ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs.

Foreign Investment Risk. Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks.

Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market.

No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.

Performance

The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.

Oak Ridge Growth Opportunity Fund

SUMMARY SECTION - OAK RIDGE GROWTH OPPORTUNITY FUND

Investment Objectives

The Oak Ridge Growth Opportunity Fund (the “Fund”) seeks to provide long-term capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.

Shareholder Fees
(fees paid directly from your investment)

Shareholder Fees Oak Ridge Growth Opportunity Fund (USD $)

Class A Shares

Class I Shares

Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 5.75% none

Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) 1.00% ^[1] none

Redemption fee (as a percentage of amount redeemed) none none

Wire fee 20.00 20.00

Overnight check delivery fee 15.00 15.00

Retirement account fees (annual maintenance and full redemption requests) 15.00 15.00

[1] No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase.

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Oak Ridge Growth Opportunity Fund

Class A Shares

Class I Shares

Management fees 0.75% 0.75%

Distribution (Rule 12b-1) fee 0.25% none

Other expenses (includes shareholder services fee of up to 0.15%) ^[1] 1.00% 1.00%

Acquired fund fees and expenses 0.01% 0.01%

Total annual fund operating expenses 2.01% 1.76%

Fee waiver and/or expense reimbursement ^[2] (0.60%) (0.60%)

Total annual fund operating expenses after fee waiver and/or expense reimbursement ^[2] 1.41% 1.16%

[1] "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year.

[2] The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.40% and 1.15% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment.

Example

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

Expense Example Oak Ridge Growth Opportunity Fund (USD $)

1 Year

3 Years

Class A Shares
710 1,115

Class I Shares
118 496

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.

Principal Investment Strategies

Under normal circumstances, the Fund primarily invests in equity securities of companies with market capitalizations within the range of those companies included in the Russell Mid Cap Growth Index at the time of purchase. As of March 31, 2013, the market capitalizations of companies included in the Russell Mid Cap Growth Index were between $418 million and $2 5 billion. Investments in companies that move above or below the capitalization range of the Russell Mid Cap Growth Index after purchase may continue to be held by the Fund at the Fund advisor’s sole discretion.

The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors.

The Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.

Principal Risks of Investing

The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money.

Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate or factors relating to specific companies in which the Fund invests.

Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests.

Mid- Cap Company Risk. The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general.

ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs.

Foreign Investment Risk . Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks.

Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results.

Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market.

No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.

Performance

The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.

X

- Definition

No authoritative reference available.

+ References

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Risk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.

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This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.

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Total Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."

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Investment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).

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Other Expenses

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Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.

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The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Fees and expenses of the fund:6false 2rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Fees and expenses of the fund, narrative7false 2rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false0Shareholder fees, caption8false 2rr_ShareholderFeesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesData020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127940Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass A SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127941Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass I SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$1falseRowprimaryElement*3false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)2falseRowprimaryElement*4false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) 0rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[1]falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)3falseRowprimaryElement*5false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsetruenegatedrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed) 0rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue00falsefalsefalse2truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)4falseRowprimaryElement*6false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee 0imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00falsefalsefalse2truefalsefalse20.0020.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee5falseRowprimaryElement*7false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee 0imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00falsefalsefalse2truefalsefalse15.0015.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee6falseRowprimaryElement*8false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests) 0rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00falsefalsefalse2truefalsetrue15.0015.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)1 No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase. falseShareholder Fees Oak Ridge Dividend Growth Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2661026018ColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No definition available.false0Shareholder fees, table9false 2rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Annual fund operating expenses, heading10false 2rr_AnnualFundOperatingExpensesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesData020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127940Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass A SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0Standard0 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127941Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass I SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0Standard0 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$1falseRowprimaryElement*3false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees 0rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalse2truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees2falseRowprimaryElement*4false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee 0rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee3falseRowprimaryElement*5false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%) 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.010.01falsefalsefalse2truetruetrue0.010.01falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)4falseRowprimaryElement*6false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses 0rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00010.0001falsefalsefalse2truetruetrue0.00010.0001falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses5falseRowprimaryElement*7false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02010.0201falsefalsefalse2truetruetrue0.01760.0176falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses6falseRowprimaryElement*8false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement 0rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue-0.0075-0.0075falsefalsefalse2truetruetrue-0.0075-0.0075falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement7falseRowprimaryElement*9false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement 0rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.01260.0126falsefalsefalse2truetruetrue0.01010.0101falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement1 "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year. 2 The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.25% and 1.00% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment. falseAnnual Fund Operating Expenses Oak Ridge Dividend Growth FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2771227020ColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041272MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false0Annual fund operating expenses, table11false 2rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Example, heading12false 2rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example, Narrative13false 2rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041272Member ~ </div>truehttp://xbrl.sec.gov/rr/role/ExpenseExample020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false23 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041272MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127940Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass A SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue696696falsefalsefalse2truefalsetrue11011101falsefalsefalsenanafalse0Class A Shares2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041272MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Dividend Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041272Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127941Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Dividend Growth FundClass I SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue103103falsefalsefalse2truefalsetrue481481falsefalsefalsenanafalse0Class I SharesfalseExpense Example Oak Ridge Dividend Growth Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet222222014ColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041272MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false0Expense Example, with Redemption, table14false 2rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio Turnoverfalsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio turnover, heading15false 2rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio turnover, narrative16false 2rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Heading17false 2rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Under normal market conditions, the Fund will invest at least 80% of its net assets (plus borrowings for investment purposes) in equity securities that have a record of paying dividends. The Fund will invest primarily in mid-cap and large-cap U.S. companies with market capitalizations of $5 billion or higher at the time of initial purchase. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a bottom-up approach that involves quantitative and qualitative review of companies to seek to identify those exhibiting consistent dividend payments and favorable fundamentals, including a dividend payout ratio and earnings growth, that indicate an ability to sustain above average growth in dividends. The Fund’s advisor seeks a dividend yield that will be comparable to the S&P 500 Index average yield, with each stock evaluated as having the potential to increase future dividends at a rate above the S&P 500 Index. In addition, the Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Narrative18false 2rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risks of Investingfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk, Heading19false 2rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate, or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid-Cap Company Risk . The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk. Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk, Narrative20false 2rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table, Heading21false 2rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance, Narrative22false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00Oak Ridge Growth Opportunity Fundfalsefalsefalse2false truefalseimstoakridge_S000041273http://www.sec.gov/CIK0001318342duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseimstoakridge_S000041273Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMembernanafalse0Oak Ridge Growth Opportunity Fund23false 2rr_RiskReturnHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SUMMARY SECTION - OAK RIDGE GROWTH OPPORTUNITY FUNDfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 false0Risk/Return24false 2rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment Objectivesfalsefalsefalsexbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective:25false 2rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Oak Ridge Growth Opportunity Fund (the “Fund”) seeks to provide long-term capital appreciation.falsefalsefalsenonnum:textBlockItemTypenaInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Investment objective26false 2rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expenses of the Fundfalsefalsefalsexbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Fees and expenses of the fund:27false 2rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Class A shares of the Fund. More information about these and other discounts is available from your financial professional and in the section titled “Class A Shares” on page 15 of this Prospectus.falsefalsefalsenonnum:textBlockItemTypenaThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Fees and expenses of the fund, narrative28false 2rr_ShareholderFeesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (fees paid directly from your investment)falsefalsefalsexbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 false0Shareholder fees, caption29false 2rr_ShareholderFeesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesData020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127942Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass A SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127943Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass I SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$1falseRowprimaryElement*3false 2rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price) 0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05750.0575falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 1 false0Maximum sales charge (load) imposed on purchases (as a percentage of offering price)2falseRowprimaryElement*4false 2rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption) 0rr_MaximumDeferredSalesChargeOverOfferingPricerr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01[1]falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph a -Clause i false0Maximum deferred sales charge (load) (as a percentage of the lesser of the net asset value at purchase or redemption)3falseRowprimaryElement*5false 2rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsetruenegatedrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed) 0rr_RedemptionFeeOverRedemptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue00falsefalsefalse2truetruetrue00falsefalsefalserr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 2 -Subparagraph b false0Redemption fee (as a percentage of amount redeemed)4falseRowprimaryElement*6false 2imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee 0imstoakridge_WireFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse20.0020.00falsefalsefalse2truefalsefalse20.0020.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Wire fee5falseRowprimaryElement*7false 2imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee 0imstoakridge_CheckFeeimstoakridge_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse15.0015.00falsefalsefalse2truefalsefalse15.0015.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryNo authoritative reference available.No definition available.false2Overnight check delivery fee6falseRowprimaryElement*8false 2rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests) 0rr_ShareholderFeeOtherrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15.0015.00falsefalsefalse2truefalsetrue15.0015.00falsefalsefalserr:NonNegativeMonetaryTypemonetaryOther ExpensesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 10 false2Retirement account fees (annual maintenance and full redemption requests)1 No sales charge applies on investments of $500,000 or more, but a contingent deferred sales charge ("CDSC") of 1% will be imposed on certain redemptions of such shares within 12 months of the date of purchase. falseShareholder Fees Oak Ridge Growth Opportunity Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2661026018ColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No definition available.false0Shareholder fees, table30false 2rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Annual fund operating expenses, heading31false 2rr_AnnualFundOperatingExpensesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesData020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127942Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass A SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0Standard0 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$2falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127943Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass I SharesRatioStandardhttp://www.xbrl.org/2003/instancepure0Standard0 USDfalsefalseduration2013-06-28T00:00:002013-06-28T00:00:00$1falseRowprimaryElement*3false 2rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees 0rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00750.0075falsefalsefalse2truetruetrue0.00750.0075falsefalsefalserr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management fees2falseRowprimaryElement*4false 2rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee 0rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalse2truetruetrue00falsefalsefalserr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (Rule 12b-1) fee3falseRowprimaryElement*5false 2rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%) 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.010.01falsefalsefalse2truetruetrue0.010.01falsefalsefalserr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other expenses (includes shareholder services fee of up to 0.15%)4falseRowprimaryElement*6false 2rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses 0rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00010.0001falsefalsefalse2truetruetrue0.00010.0001falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired fund fees and expenses5falseRowprimaryElement*7false 2rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02010.0201falsefalsefalse2truetruetrue0.01760.0176falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total annual fund operating expenses6falseRowprimaryElement*8false 2rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement 0rr_FeeWaiverOrReimbursementOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue-0.006-0.006falsefalsefalse2truetruetrue-0.006-0.006falsefalsefalserr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Fee waiver and/or expense reimbursement7falseRowprimaryElement*9false 2rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement 0rr_NetExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.01410.0141falsefalsefalse2truetruetrue0.01160.0116falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Total annual fund operating expenses after fee waiver and/or expense reimbursement1 "Other expenses" and "Acquired fund fees and expenses" have been estimated for the current fiscal year. 2 The Fund's advisor has contractually agreed to waive its fees and/or pay for operating expenses of the Fund to ensure that total annual fund operating expenses (excluding, as applicable, taxes, leverage interest, brokerage commissions, dividend expenses on short sales, acquired fund fees and expenses as determined in accordance with Form N-1A, expenses incurred in connection with any merger or reorganization, or extraordinary expenses such as litigation expenses) do not exceed 1.40% and 1.15% of the average daily net assets of the Fund's Class A and Class I shares, respectively. This agreement is in effect until September 30, 2014, and may be terminated before that date only by the Trust's Board of Trustees. The Fund's advisor is permitted to seek reimbursement from the Fund, subject to limitations, for fees it waived and Fund expenses it paid for three years from the date of any such waiver or payment. falseAnnual Fund Operating Expenses Oak Ridge Growth Opportunity FundUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet2771227020ColumnperiodPeriod*Columndei_LegalEntityAxisAxisimstoakridge_S000041273MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false0Annual fund operating expenses, table32false 2rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Examplefalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Example, heading33false 2rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00This 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsenonnum:textBlockItemTypenaThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example, Narrative34false 2rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>falsefalse<div style="display: none;"> ~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact imstoakridge_S000041273Member ~ </div>truehttp://xbrl.sec.gov/rr/role/ExpenseExample020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 2rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 2rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false23 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041273MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass A Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127942Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass A SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue710710falsefalsefalse2truefalsetrue11151115falsefalsefalsenanafalse0Class A Shares2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041273MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-06-28T00:00:002013-06-28T00:00:00falsefalseOak Ridge Growth Opportunity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_S000041273Memberdei_LegalEntityAxisexplicitMemberfalsefalseClass I Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiimstoakridge_C000127943Memberrr_ProspectusShareClassAxisexplicitMemberOak Ridge Growth Opportunity FundClass I SharesUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue118118falsefalsefalse2truefalsetrue496496falsefalsefalsenanafalse0Class I SharesfalseExpense Example Oak Ridge Growth Opportunity Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet222222014ColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisimstoakridge_S000041273MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false0Expense Example, with Redemption, table35false 2rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Portfolio Turnoverfalsefalsefalsexbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio turnover, heading36false 2rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly-created and, as a result, does not yet have a portfolio turnover rate.falsefalsefalsenonnum:textBlockItemTypenaDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio turnover, narrative37false 2rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategiesfalsefalsefalsexbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Heading38false 2rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Under normal circumstances, the Fund primarily invests in equity securities of companies with market capitalizations within the range of those companies included in the Russell Mid Cap Growth Index at the time of purchase. As of March 31, 2013, the market capitalizations of companies included in the Russell Mid Cap Growth Index were between $418 million and $2 5 billion. Investments in companies that move above or below the capitalization range of the Russell Mid Cap Growth Index after purchase may continue to be held by the Fund at the Fund advisor’s sole discretion. The Fund’s equity investments include common stock, and can include preferred stock, depository receipts, exchanged traded funds (“ETFs”), rights and warrants. The Fund may also invest in American Depository Receipts (“ADRs”). The Fund will invest in a diversified portfolio of securities typically spread across many economic sectors. The Fund’s advisor uses a “growth” style of management and seeks to identify companies with: consistent earnings growth, rising earnings estimates, healthy forecasted earnings growth and reasonable valuations.falsefalsefalsenonnum:textBlockItemTypenaPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy, Narrative39false 2rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risks of Investingfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk, Heading40false 2rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund’s principal risks are described below. Before you decide whether to invest in the Fund, carefully consider these risk factors and special considerations associated with investing in the Fund, which may cause investors to lose money. Market Risk. Market risk is the risk that the Fund’s share price may be affected by a sudden decline in the market value of an investment, or by an overall decline in the stock market due to, among other things, general market and economic conditions, perceptions regarding the industries in which the issuers of securities held by the Fund participate or factors relating to specific companies in which the Fund invests. Equity Securities Risk. Investment in equity securities involves substantial risks and may be subject to wide and sudden fluctuations in market value, with a resulting fluctuation in the amount of profits and losses due to general market and economic conditions or factors relating to specific companies in which the Fund invests. Mid- Cap Company Risk. The securities of mid-sized companies may be subject to more abrupt or erratic market movements and may have lower trading volumes or more erratic trading than securities of larger companies or the market averages in general. ETF Risk. ETFs typically trade on securities exchanges and their shares may, at times, trade at a premium or discount to their net asset values. In addition, an ETF may not replicate exactly the performance of the benchmark index it seeks to track for a number of reasons, including transaction costs incurred by the ETF, the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of securities held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses. The Funds will incur brokerage costs when purchasing and selling shares of ETFs. Foreign Investment Risk . Although the Fund will limit its investment in securities of foreign issuers to ADRs, the Fund's investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. The prices of foreign securities may be more volatile than those of U.S. securities because of economic and social conditions abroad, political developments, and changes in the regulatory environment of foreign countries. In addition, changes in exchange rates and interest rates may adversely affect the value of the Fund’s foreign investments. Foreign companies are generally subject to different legal and accounting standards than U.S. companies, and foreign financial intermediaries may be subject to less supervision and regulation than U.S. financial firms. The Fund’s investments in depository receipts are also subject to these risks. Management and Strategy Risk. The Fund is subject to management risk because it is an actively managed portfolio. The Fund’s advisor applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Growth-Oriented Investment Strategies Risk. The stocks of growth companies are generally more sensitive to the companies’ earnings and tend to be more volatile than non-growth stocks and fluctuate more dramatically than the overall market. No Operating History. The Fund is a newly organized series of an open-end management investment company and has no operating history. As a result, prospective investors have no track record or history on which to base their investment decisions.falsefalsefalsenonnum:textBlockItemTypenaNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk, Narrative41false 2rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performancefalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table, Heading42false 2rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund is new and it does not have a full calendar year performance record to compare against other mutual funds or broad measures of securities market performance such as indices. Performance information will be available after the Fund has been in operation for one calendar year.falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance, NarrativefalseRisk/Return SummaryUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://xbrl.sec.gov/rr/role/RiskReturn142