485BPOS

As filed with the Securities and Exchange Commission on November 15, 2013

1933 Act File No. 333-102943

1940 Act File No. 811-21294

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x
Pre-effective Amendment No.	o
Post-effective Amendment No. 52	x

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 53	x

Munder Series Trust

(Exact Name of Registrant as Specified in Charter)

480 Pierce Street, Birmingham, Michigan	48009
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, including Area Code:   (800) 438-5789

Stephen J. Shenkenberg

c/o Munder Series Trust

480 Pierce Street
Birmingham, Michigan 48009

(Name and Address of Agent for Service)

Copies to:

Jane A. Kanter, Esquire

Dechert LLP

1775 I Street, N.W.

Washington, DC 20006

Approximate Date of Proposed Public Offering:  As soon as practicable after the effective date of this Registration Statement

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

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

o on           pursuant to paragraph (b)

o 60 days after filing pursuant to paragraph (a)(1)

o on                pursuant to paragraph (a)(1)

o 75 days after filing pursuant to paragraph (a)(2)

o on                pursuant to paragraph (a)(2)

If appropriate, check the following box:

o this post-effective amendment designates a new effective date for previously filed post-effective amendment.

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 this Post-Effective Amendment No. 52 to the Registration Statement meets all the requirements for effectiveness of this registration statement pursuant to Rule 485(b) of the Securities Act of 1933, as amended, and the Registrant has duly caused this Post-Effective Amendment No. 52 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Birmingham and The State of Michigan, on the 15th day of November 2013.

MUNDER SERIES TRUST

/s/ James V. FitzGerald
By:	James V. FitzGerald
	President

Pursuant to the requirements of the Securities Act, this registration statement has been signed below by the following persons in the capacities on the date(s) indicated.

Signatures	Title	Date
*/s/ Joseph E. Champagne	Trustee	November 15, 2013
Joseph E. Champagne
*/s/ Thomas D. Eckert	Trustee	November 15, 2013
Thomas D. Eckert
*/s/ John Engler	Trustee	November 15, 2013
John Engler
*/s/ Michael T. Monahan	Trustee	November 15, 2013
Michael T. Monahan
*/s/ John Rakolta, Jr.	Trustee	November 15, 2013
John Rakolta, Jr.
*/s/ Lisa A. Payne	Trustee	November 15, 2013
Lisa A. Payne
/s/ James V. FitzGerald	President	November 15, 2013
James V. FitzGerald	(Principal Executive Officer)
/s/ Peter K. Hoglund	Vice President	November 15, 2013
Peter K. Hoglund	(Principal Financial Officer)
/s/ David W. Rumph	Treasurer	November 15, 2013
David W. Rumph	(Principal Accounting Officer)

* By:	/s/ Stephen J. Shenkenberg
	Stephen J. Shenkenberg
	as Attorney-in-Fact

Exhibit Index

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

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Growth Opportunities Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in 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 93% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

93.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues long-term capital appreciation in the Fund by identifying secular growth trends and investing in equity securities (i.e., common stocks, preferred stocks, depositary receipts, convertible securities and rights and warrants) of companies the advisor believes will benefit from these trends.

In selecting individual securities for the Fund, the advisor employs a bottom-up analysis, which involves a thorough review of a company’s products and services, competitive positioning, balance sheet and financial stability.  In addition, in selecting securities for the Fund, the advisor attempts to identify and evaluate underlying growth drivers for each company and to arrive at a projected fair value for the company’s equity securities.

The Fund is subject to a fundamental policy, which cannot be changed without shareholder approval, to concentrate (i.e., invest at least 25% of its total assets) in securities of companies engaged in the research, design, development, manufacturing or distribution of products, processes or services for use with Internet-related businesses.  As a result of the foregoing policy, the Fund is expected to have a significant portion of its assets invested in companies in the information technology sector.

In addition, as a result of the Fund’s focus on secular growth trends, a significant portion of the Fund’s assets may be invested in other sectors, industries and types of companies that the advisor believes have significant growth opportunities and exhibit attractive long-term growth characteristics.

Although the Fund will be invested primarily in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities, including emerging market country securities. There is no limit on the market capitalization in which the Fund may invest; therefore, the Fund’s investments may include small-, mid- and large-capitalization companies.

From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the large-capitalization growth sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Sector/Industry Concentration Risk

A significant amount of the Fund’s assets is likely to be invested in the information technology sector. When the Fund focuses its investments in a sector or industry, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting that sector or industry.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are concentrated in a particular sector or industry.

Information Technology Sector Investing Risk

Information technology companies tend to significantly rely on technological events or advances in their product development, production or operations.  The value of these companies, therefore, is particularly vulnerable to rapid changes in technological product cycles, government regulation and competition. Further, information technology stocks, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market.

Internet-Related Investing Risk

Internet-related companies are primarily companies within the information technology sector and, therefore, are subject to the risks associated with investing in that sector.  The value of Internet-related companies in other economic sectors (e.g., the Internet & catalog retail industry) is also susceptible to changes in factors affecting competition, such as the overall health of the economy, consumer confidence and spending, changes in demographics and consumer tastes, and interest rates.

Smaller Company Stock Risk

Small or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year over the past ten years and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	17.64	%
Best Quarter:	37.04	%	(quarter ended 6/30/03)
Worst Quarter:	-24.68	%	(quarter ended 12/31/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

17.64%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

37.04%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.68%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The index returns from inception for Class Y, A, B, C and R shares are as of 6/1/98, 9/1/96, 6/1/98, 11/1/98 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Russell 1000® Growth Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.26%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.12%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

2.80%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

S&P 500® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.73%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

Russell 1000® Growth Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.26%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.12%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.82%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 19, 1996

S&P 500® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.83%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 19, 1996

Russell 1000® Growth Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.26%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.12%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

2.80%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

S&P 500® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.73%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

Russell 1000® Growth Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.26%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.12%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

2.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 03, 1998

S&P 500® Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.74%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 03, 1998

Russell 1000® Growth Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.26%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.12%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.07%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

S&P 500® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.29%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.68%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

711

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,050

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,412

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,428

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

711

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,050

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,412

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,428

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

6.32%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.13%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.93%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.80%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 19, 1996

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[3]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.43%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

746

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,058

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,496

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,581

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

246

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

758

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,296

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,581

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

6.60%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.17%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.89%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.62%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[4]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.43%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

346

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

758

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,296

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,766

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

246

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

758

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,296

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,766

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

10.60%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.51%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.73%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

2.58%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 03, 1998

Class R

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[5]

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.93%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

196

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

606

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,042

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,254

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

196

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

606

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,042

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,254

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

12.18%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.04%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.55%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.43%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

146

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

453

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

782

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,714

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

146

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

453

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

782

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,714

Annual Return 2003

rr_AnnualReturn2003

68.45%

Annual Return 2004

rr_AnnualReturn2004

14.33%

Annual Return 2005

rr_AnnualReturn2005

8.37%

Annual Return 2006

rr_AnnualReturn2006

0.62%

Annual Return 2007

rr_AnnualReturn2007

16.58%

Annual Return 2008

rr_AnnualReturn2008

(45.62%)

Annual Return 2009

rr_AnnualReturn2009

79.05%

Annual Return 2010

rr_AnnualReturn2010

19.63%

Annual Return 2011

rr_AnnualReturn2011

(4.83%)

Annual Return 2012

rr_AnnualReturn2012

12.76%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

12.76%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.56%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

11.83%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.31%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 01, 1998

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

12.76%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.41%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

11.75%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.21%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

8.29%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.91%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.64%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.78%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[5] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

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Munder Growth Opportunities Fund

Munder Growth Opportunities Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide long-term capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Growth Opportunities Fund	Class A		Class B		Class C		Class R	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none		none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	5.00%	[3]	1.00%	[4]	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Growth Opportunities Fund	Class A	Class B	Class C	Class R		Class Y
Management Fees	0.75%	0.75%	0.75%	0.75%		0.75%
Distribution and/or Service (12b-1) Fees	0.25%	1.00%	1.00%	0.50%	[1]	none
Other Expenses	0.68%	0.68%	0.68%	0.68%		0.68%
Total Annual Fund Operating Expenses	1.68%	2.43%	2.43%	1.93%		1.43%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Growth Opportunities Fund (USD $)	Class A	Class B	Class C	Class R	Class Y
1 Year	711	746	346	196	146
3 Years	1,050	1,058	758	606	453
5 Years	1,412	1,496	1,296	1,042	782
10 Years	2,428	2,581	2,766	2,254	1,714

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

Expense Example No Redemption Munder Growth Opportunities Fund (USD $)	Class A	Class B	Class C	Class R	Class Y
1 Year	711	246	246	196	146
3 Years	1,050	758	758	606	453
5 Years	1,412	1,296	1,296	1,042	782
10 Years	2,428	2,581	2,766	2,254	1,714

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 93% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term capital appreciation in the Fund by identifying secular growth trends and investing in equity securities (i.e., common stocks, preferred stocks, depositary receipts, convertible securities and rights and warrants) of companies the advisor believes will benefit from these trends.

In selecting individual securities for the Fund, the advisor employs a bottom-up analysis, which involves a thorough review of a company’s products and services, competitive positioning, balance sheet and financial stability.  In addition, in selecting securities for the Fund, the advisor attempts to identify and evaluate underlying growth drivers for each company and to arrive at a projected fair value for the company’s equity securities.

The Fund is subject to a fundamental policy, which cannot be changed without shareholder approval, to concentrate (i.e., invest at least 25% of its total assets) in securities of companies engaged in the research, design, development, manufacturing or distribution of products, processes or services for use with Internet-related businesses.  As a result of the foregoing policy, the Fund is expected to have a significant portion of its assets invested in companies in the information technology sector.

In addition, as a result of the Fund’s focus on secular growth trends, a significant portion of the Fund’s assets may be invested in other sectors, industries and types of companies that the advisor believes have significant growth opportunities and exhibit attractive long-term growth characteristics.

Although the Fund will be invested primarily in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities, including emerging market country securities. There is no limit on the market capitalization in which the Fund may invest; therefore, the Fund’s investments may include small-, mid- and large-capitalization companies.

From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the large-capitalization growth sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Sector/Industry Concentration Risk

A significant amount of the Fund’s assets is likely to be invested in the information technology sector. When the Fund focuses its investments in a sector or industry, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting that sector or industry.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are concentrated in a particular sector or industry.

Information Technology Sector Investing Risk

Information technology companies tend to significantly rely on technological events or advances in their product development, production or operations.  The value of these companies, therefore, is particularly vulnerable to rapid changes in technological product cycles, government regulation and competition. Further, information technology stocks, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market.

Internet-Related Investing Risk

Internet-related companies are primarily companies within the information technology sector and, therefore, are subject to the risks associated with investing in that sector.  The value of Internet-related companies in other economic sectors (e.g., the Internet & catalog retail industry) is also susceptible to changes in factors affecting competition, such as the overall health of the economy, consumer confidence and spending, changes in demographics and consumer tastes, and interest rates.

Smaller Company Stock Risk

Small or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	17.64	%
Best Quarter:	37.04	%	(quarter ended 6/30/03)
Worst Quarter:	-24.68	%	(quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Growth Opportunities Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	12.76%	4.56%	11.83%	4.31%	Jun. 01, 1998
Class A	6.32%	3.13%	10.93%	7.80%	Aug. 19, 1996
Class B	6.60%	3.17%	10.89%	3.62%	Jun. 01, 1998
Class C	10.60%	3.51%	10.73%	2.58%	Nov. 03, 1998
Class R	12.18%	4.04%		7.55%	Jul. 29, 2004
After Taxes on Distributions Class Y	12.76%	4.41%	11.75%	4.21%
After Taxes on Distributions and Sale of Fund Shares Class Y	8.29%	3.91%	10.64%	3.78%
Russell 1000® Growth Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	15.26%	3.12%	7.52%	2.80%	Jun. 01, 1998
S&P 500® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	3.73%	Jun. 01, 1998
Russell 1000® Growth Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	15.26%	3.12%	7.52%	5.82%	Aug. 19, 1996
S&P 500® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	6.83%	Aug. 19, 1996
Russell 1000® Growth Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	15.26%	3.12%	7.52%	2.80%	Jun. 01, 1998
S&P 500® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	3.73%	Jun. 01, 1998
Russell 1000® Growth Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	15.26%	3.12%	7.52%	2.59%	Nov. 03, 1998
S&P 500® Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	3.74%	Nov. 03, 1998
Russell 1000® Growth Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	15.26%	3.12%		6.07%	Jul. 29, 2004
S&P 500® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%		5.29%	Jul. 29, 2004

The index returns from inception for Class Y, A, B, C and R shares are as of 6/1/98, 9/1/96, 6/1/98, 11/1/98 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

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Munder Index 500 Fund

Munder Index 500 Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide performance and income that is comparable to the S&P 500® Index.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Index 500 Fund	Class A		Class B		Class K	Class R	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	2.50%	[1]	none		none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none		3.00%	[2]	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Index 500 Fund	Class A		Class B		Class K	Class R		Class Y
Management Fees	0.20%		0.20%		0.20%	0.20%		0.20%
Distribution and/or Service (12b-1) Fees	0.25%	[1]	1.00%	[1]	none	0.50%	[2]	none
Other Expenses	0.40%		0.41%		0.66%	0.40%		0.39%
Total Annual Fund Operating Expenses	0.85%		1.61%		0.86%	1.10%		0.59%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Index 500 Fund (USD $)	Class A	Class B	Class K	Class R	Class Y
1 Year	335	464	88	112	60
3 Years	515	708	274	350	189
5 Years	711	976	476	607	330
10 Years	1,274	1,707	1,060	1,341	739

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

Expense Example No Redemption Munder Index 500 Fund (USD $)	Class A	Class B	Class K	Class R	Class Y
1 Year	335	164	88	112	60
3 Years	515	508	274	350	189
5 Years	711	876	476	607	330
10 Years	1,274	1,707	1,060	1,341	739

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 5% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The sub-advisor invests, under normal circumstances, at least 80% of the Fund’s assets in equity securities of companies in the S&P 500® Index. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  In practice, the Fund typically holds all 500 of the stocks in the S&P 500® Index, which is a capitalization-weighted index that measures the performance of the large-capitalization sector of the U.S. stock market.

The Fund is managed through the use of a “quantitative” or “indexing” investment approach, which tries to replicate the composition and performance of the S&P 500® Index through statistical procedures.  The sub-advisor invests in stocks that are included in the S&P 500® Index in approximately the same proportions as they are represented in the index.  As a result, the sub-advisor does not use traditional methods of stock selection, i.e., it does not select stocks on the basis of economic, financial and market analysis.

The Fund seeks to achieve a correlation between the performance of its portfolio and the S&P 500® Index of at least 0.95.  A correlation of 1.0 would mean that the changes in the Fund’s price mirror exactly the changes in the S&P 500® Index.

The sub-advisor uses futures contracts to manage cash, accrued dividends and other non-performing assets in an effort to minimize performance disparity between the Fund and the S&P 500® Index.  From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Tracking Risk

The Fund’s ability to track the return of the S&P 500® Index is impacted by the fact that the Fund pays fees and transaction costs, while the Index does not; therefore, the Fund’s returns are likely to be lower than those of the Index. Tracking variance may also result from the impact of share purchases, redemptions and other factors not affecting the Index.

Index Strategy Risk

The Fund will invest in the securities included in the S&P 500® Index regardless of market trends. As a result, the Fund does not modify its investment strategy to respond to changes in the economy, which means it may be particularly susceptible to a general decline in the large-capitalization sector of the U.S. stock market.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty risk, the risk of mispricing or improper valuation and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used. There can be no assurance that the Fund will use derivatives to hedge any particular position or risk, nor can there be any assurance that a derivative hedge, if employed, will be successful.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	19.32	%
Best Quarter:	15.83	%	(quarter ended 6/30/09)
Worst Quarter:	-22.12	%	(quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Index 500 Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	15.36%	1.23%	6.67%	8.28%	Dec. 01, 1991
Class A	12.27%	0.56%	6.18%	7.46%	Dec. 09, 1992
Class B	11.76%	0.61%	6.21%	6.54%	Oct. 31, 1995
Class K	15.08%	0.97%	6.40%	7.53%	Dec. 07, 1992
Class R	14.78%	0.72%		4.34%	Jul. 29, 2004
After Taxes on Distributions Class Y	13.12%	(0.43%)	5.60%	7.10%
After Taxes on Distributions and Sale of Fund Shares Class Y	12.94%	0.84%	5.74%	7.02%
S&P 500® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	8.71%	Dec. 01, 1991
S&P 500® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	8.25%	Dec. 09, 1992
S&P 500® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	7.32%	Oct. 31, 1995
S&P 500® Index Class K Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%	7.10%	8.25%	Dec. 07, 1992
S&P 500® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	16.00%	1.66%		5.29%	Jul. 29, 2004

The index returns from inception for Class Y, A, B, K and R shares are as of 12/1/91, 12/1/92, 11/1/95, 12/1/92 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[1] The distributor has voluntarily agreed to waive a portion of its Rule 12b-1 fees with respect to Class A and Class B shares for the current fiscal year. The distributor may discontinue the fee waiver at any time in its sole discretion. As a result of the fee waivers, the Fund's 12b-1 Fees and Total Annual Fund Operating Expenses would be 0.15% and 0.75%, respectively, for Class A shares, and 0.50% and 1.11%, respectively, for Class B shares.

[2] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Veracity Small-Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to seek to achieve long-term capital growth.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds. More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The sub-advisor pursues long-term capital growth in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of small-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Small-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell 2000® Index ($42 million to $4.8 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that are, in their view, temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates.  In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector/Industry Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

On May 13, 2011, the Fund acquired the assets and liabilities of the Veracity Small Cap Value Fund (“Veracity Fund”) (“Reorganization”). The Veracity Fund was the accounting survivor of the Reorganization and the Veracity Fund’s performance and financial history have been adopted by the Fund. As a result, the performance information and financial history in this Prospectus for the periods prior to May 14, 2011 are that of the Veracity Fund. The Veracity Fund offered Class R and Class I shares, which were similar to the Fund’s Class A and Class Y shares, respectively.

The performance for Class A shares in the bar chart and table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class R shares. The performance for Class Y shares in the table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class I shares.  The performance for Class A and Class Y shares have not been restated to reflect any difference in the expenses of the Veracity Fund’s Class R and I shares, respectively. The performance for Class B, Class C, Class K and Class R shares in the table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class I shares adjusted for differences in the applicable sales loads and Rule 12b-1 fees of each respective class.

The annual returns in the bar chart are for the class of shares with the longest performance history, Class A shares. The annual returns in the bar chart do not reflect the impact of sales charges (loads).  If they did, the returns would be lower than those shown. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

The annual returns in the bar chart do not reflect the impact of sales charges (loads). If they did, the returns would be lower than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	29.38	%
Best Quarter:	23.78	%	(quarter ended 6/30/09)
Worst Quarter:	-20.78	%	(quarter ended 12/31/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

29.38%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

23.78%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.78%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class A shares. The after-tax returns of the Class B, C, K, R, R6 and Y shares will vary from those shown for the Class A shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The index returns from inception for Class A, B, C, K, R and Y shares are as of 4/1/04, 7/1/05, 7/1/05, 7/1/05, 7/1/05 and 7/1/05, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class A shares. The after-tax returns of the Class B, C, K, R, R6 and Y shares will vary from those shown for the Class A shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges in existence during the periods indicated)

Russell 2000® Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.42%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 30, 2004

Russell 2000® Value Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.35%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Russell 2000® Value Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.35%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Russell 2000® Value Index Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.35%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Russell 2000® Value Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.35%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Russell 2000® Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.05%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.55%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.35%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.45%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.59%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.09%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.50%

^[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

694

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,016

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,360

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,328

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

694

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,016

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,360

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,328

Annual Return 2005

rr_AnnualReturn2005

8.31%

Annual Return 2006

rr_AnnualReturn2006

18.00%

Annual Return 2007

rr_AnnualReturn2007

(7.11%)

Annual Return 2008

rr_AnnualReturn2008

(31.26%)

Annual Return 2009

rr_AnnualReturn2009

33.58%

Annual Return 2010

rr_AnnualReturn2010

29.45%

Annual Return 2011

rr_AnnualReturn2011

(2.91%)

Annual Return 2012

rr_AnnualReturn2012

13.76%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

7.48%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.60%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.87%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 30, 2004

Class A | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

7.48%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.53%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.54%

Class A | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.86%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.78%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.94%

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.48%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.37%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.12%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.25%

^[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

728

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,028

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,455

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,503

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

228

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

728

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,255

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,503

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

7.87%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[6]

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.45%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.34%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.09%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.25%

^[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

328

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

722

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,242

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,669

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

228

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

722

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,242

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,669

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

11.86%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.81%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Class K

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.70%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.59%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.09%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.50%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

153

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

493

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

857

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,882

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

153

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

493

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

857

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,882

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

13.73%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.60%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.82%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Class R

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[7]

Other Expenses

rr_OtherExpensesOverAssets

0.44%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.83%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.75%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

178

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

568

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

983

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,141

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

178

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

568

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

983

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,141

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

13.41%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.33%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.55%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

Class R6

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.25%

^[3]

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.14%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.01%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.13%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

115

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

361

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

627

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,385

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

115

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

361

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

627

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,385

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.89%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.44%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.33%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.08%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.25%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

414

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

721

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,594

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

127

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

414

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

721

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,594

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

13.97%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.86%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.09%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 07, 2005

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

[4] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A and Class K shares, 2.25% for Class B and Class C shares, 1.75% for Class R shares and 1.25% for Class R6 and Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above for each class of shares and the Board of Trustees has approved in advance such reimbursement to MCM.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[6] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[7] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

XML

Munder Veracity Small-Cap Value Fund

Munder Veracity Small-Cap Value Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to seek to achieve long-term capital growth.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds. More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Veracity Small-Cap Value Fund	Class A		Class B		Class C		Class K	Class R	Class R6	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none		none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	5.00%	[3]	1.00%	[4]	none	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Veracity Small-Cap Value Fund		Class A	Class B	Class C	Class K	Class R		Class R6		Class Y
Management Fees		0.89%	0.89%	0.89%	0.89%	0.89%		0.89%		0.89%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	0.50%	[1]	none		none
Other Expenses		0.45%	0.48%	0.45%	0.70%	0.44%		0.25%	[2]	0.44%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	[2]	1.59%	2.37%	2.34%	1.59%	1.83%		1.14%		1.33%
Fee Waivers and/or Expense Reimbursements	[3]	(0.09%)	(0.12%)	(0.09%)	(0.09%)	(0.08%)		(0.01%)		(0.08%)
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	[3]	1.50%	2.25%	2.25%	1.50%	1.75%		1.13%		1.25%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Veracity Small-Cap Value Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class R6	Class Y
1 Year	694	728	328	153	178	115	127
3 Years	1,016	1,028	722	493	568	361	414
5 Years	1,360	1,455	1,242	857	983	627	721
10 Years	2,328	2,503	2,669	1,882	2,141	1,385	1,594

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

Expense Example No Redemption Munder Veracity Small-Cap Value Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class R6	Class Y
1 Year	694	228	228	153	178	115	127
3 Years	1,016	728	722	493	568	361	414
5 Years	1,360	1,255	1,242	857	983	627	721
10 Years	2,328	2,503	2,669	1,882	2,141	1,385	1,594

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 57% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The sub-advisor pursues long-term capital growth in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of small-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Small-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell 2000® Index ($42 million to $4.8 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that are, in their view, temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates.  In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector/Industry Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

On May 13, 2011, the Fund acquired the assets and liabilities of the Veracity Small Cap Value Fund (“Veracity Fund”) (“Reorganization”). The Veracity Fund was the accounting survivor of the Reorganization and the Veracity Fund’s performance and financial history have been adopted by the Fund. As a result, the performance information and financial history in this Prospectus for the periods prior to May 14, 2011 are that of the Veracity Fund. The Veracity Fund offered Class R and Class I shares, which were similar to the Fund’s Class A and Class Y shares, respectively.

The performance for Class A shares in the bar chart and table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class R shares. The performance for Class Y shares in the table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class I shares.  The performance for Class A and Class Y shares have not been restated to reflect any difference in the expenses of the Veracity Fund’s Class R and I shares, respectively. The performance for Class B, Class C, Class K and Class R shares in the table below for the periods prior to May 14, 2011 is the performance and inception date of the Veracity Fund’s Class I shares adjusted for differences in the applicable sales loads and Rule 12b-1 fees of each respective class.

The annual returns in the bar chart are for the class of shares with the longest performance history, Class A shares. The annual returns in the bar chart do not reflect the impact of sales charges (loads).  If they did, the returns would be lower than those shown. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	29.38	%
Best Quarter:	23.78	%	(quarter ended 6/30/09)
Worst Quarter:	-20.78	%	(quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges in existence during the periods indicated)

Average Annual Returns Munder Veracity Small-Cap Value Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class A	7.48%	5.60%	6.87%	Mar. 30, 2004
Class B	7.87%	4.52%	5.03%	Jul. 07, 2005
Class C	11.86%	4.81%	5.03%	Jul. 07, 2005
Class K	13.73%	5.60%	5.82%	Jul. 07, 2005
Class R	13.41%	5.33%	5.55%	Jul. 07, 2005
Class Y	13.97%	5.86%	6.09%	Jul. 07, 2005
After Taxes on Distributions Class A	7.48%	5.53%	6.54%
After Taxes on Distributions and Sale of Fund Shares Class A	4.86%	4.78%	5.94%
Russell 2000® Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	5.42%	Mar. 30, 2004
Russell 2000® Value Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	4.35%	Jul. 07, 2005
Russell 2000® Value Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	4.35%	Jul. 07, 2005
Russell 2000® Value Index Class K Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	4.35%	Jul. 07, 2005
Russell 2000® Value Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	4.35%	Jul. 07, 2005
Russell 2000® Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	18.05%	3.55%	4.35%	Jul. 07, 2005

The index returns from inception for Class A, B, C, K, R and Y shares are as of 4/1/04, 7/1/05, 7/1/05, 7/1/05, 7/1/05 and 7/1/05, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class A shares. The after-tax returns of the Class B, C, K, R, R6 and Y shares will vary from those shown for the Class A shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

[2] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

[3] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A and Class K shares, 2.25% for Class B and Class C shares, 1.75% for Class R shares and 1.25% for Class R6 and Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above for each class of shares and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder International Small-Cap Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide long-term growth of capital.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 88% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

88.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues long-term growth of capital in the Fund by investing primarily in equity securities (i.e., common stocks, depositary receipts, preferred stocks, convertible securities, rights and warrants) of companies in countries represented in the S&P® Developed ex-U.S. SmallCap Index, but may also invest in companies from other countries, including emerging market countries.  The S&P® Developed ex-U.S. SmallCap Index consists of the stocks representing the lowest 15% of float-adjusted market capitalization in each country other than the U.S. represented in the S&P®Developed Broad Market Index (BMI). The S&P®Developed BMI includes all listed shares of companies from 26 developed countries with float-adjusted market capitalizations of at least US$100 million and annual trading value of at least US$50 million.

Under normal circumstances, at least 80% of the Fund’s assets will be invested in securities of small-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes. With respect to each country in which the Fund invests, a small-capitalization company means any company with a market capitalization that is within such country’s smallest 15% based on market capitalization. The Fund may, however, also invest in equity securities of larger companies.

The advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify attractive stocks with low relative price multiples and positive trends in earnings forecasts.  The stock selection process is designed to produce a diversified portfolio that, relative to the S&P® Developed ex-U.S. SmallCap Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend.

Fund investment allocation to countries and sectors tends to closely approximate the country and sector allocations of the S&P®Developed ex-U.S. SmallCap Index, which concentrates its exposure in one or more countries, regions or sectors. The Fund will, however, be invested in a minimum of ten countries.

From time to time, the advisor may use futures contracts and/or exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization sector of developed country equity markets outside of the U.S.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Geographic Focus Risk

The Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s Class Y shares, its least expensive class offered to a broad array of investors. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ. 

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund's performance from year to year and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	21.99	%
Best Quarter:	27.25	%	(quarter ended 6/30/09)
Worst Quarter:	-27.05	%	(quarter ended 9/30/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

21.99%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

27.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(27.05%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C, R6 and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C, R6 and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

S&P® Developed ex-U.S. SmallCap Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.55%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(1.26%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

0.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

S&P® Developed ex-U.S. SmallCap Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.55%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(1.26%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

0.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

S&P® Developed ex-U.S. SmallCap Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.55%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(1.26%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

0.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

S&P® Developed ex-U.S. SmallCap Index Class I Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.55%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(1.26%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

0.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.95%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.90%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.52%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.38%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

683

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,067

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,475

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,611

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

683

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,067

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,475

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,611

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.99%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(4.01%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(3.54%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

0.95%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.67%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.65%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.52%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.13%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

316

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

774

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,359

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,945

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

216

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

774

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,359

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,945

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

21.86%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(3.65%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(3.27%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

Class R6

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.95%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.38%

^[6]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.36%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.23%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.13%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

115

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

408

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

722

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,614

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

115

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

408

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

722

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,614

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.95%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.65%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.63%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.50%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.13%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

115

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

465

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

839

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,891

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

115

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

465

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

839

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,891

Annual Return 2008

rr_AnnualReturn2008

(53.56%)

Annual Return 2009

rr_AnnualReturn2009

37.08%

Annual Return 2010

rr_AnnualReturn2010

25.26%

Annual Return 2011

rr_AnnualReturn2011

(11.81%)

Annual Return 2012

rr_AnnualReturn2012

24.07%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

24.07%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.69%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(2.32%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

23.99%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.72%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(2.35%)

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.25%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.13%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(1.83%)

Class I

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.95%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.31%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.33%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

0.98%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

100

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

383

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

687

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,550

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

100

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

383

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

687

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,550

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

24.32%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.46%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(2.05%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 17, 2007

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[4] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2014 to waive a portion of the Management Fees so that the Fund pays a fee of 0.90% on all assets. In addition, MCM has agreed contractually effective June 1, 2013 through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.35% for Class A shares, 2.10% for Class C shares, 1.10% for Class R6 shares, 1.10% for Class Y shares and 0.95% for Class I shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[6] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

XML

Munder Integrity Mid-Cap Value Fund

Munder Integrity Mid-Cap Value Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to seek to achieve capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Integrity Mid-Cap Value Fund	Class A		Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Integrity Mid-Cap Value Fund		Class A	Class Y
Management Fees		0.75%	0.75%
Distribution and/or Service (12b-1) Fees		0.25%	none
Other Expenses		8.29%	8.93%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements		9.29%	9.68%
Fee Waivers and/or Expense Reimbursements	[1]	(7.79%)	(8.43%)
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	[1]	1.50%	1.25%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Integrity Mid-Cap Value Fund (USD $)	Class A	Class Y
1 Year	694	127
3 Years	2,434	2,043
5 Years	4,028	3,783
10 Years	7,451	7,471

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

Expense Example No Redemption Munder Integrity Mid-Cap Value Fund (USD $)	Class A	Class Y
1 Year	694	127
3 Years	2,434	2,043
5 Years	4,028	3,783
10 Years	7,451	7,471

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 82% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of mid-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Mid-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell Midcap® Index ($888 million to $27.5 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of smaller or larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the mid-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that, in their view, are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Medium-Sized Company Stock Risk

Medium-sized (or mid-capitalization) companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of medium-sized companies tend to be more volatile than those of larger companies and medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since medium-sized company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance compared to that of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	25.30%
Best Quarter:	12.01%	(quarter ended 3/31/12)
Worst Quarter:	-5.02%	(quarter ended 6/30/12)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Integrity Mid-Cap Value Fund	Average Annual Returns, 1 Year	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	16.78%	5.34%	Jul. 01, 2011
Class A	10.05%	1.21%	Jul. 01, 2011
After Taxes on Distributions Class Y	16.71%	5.28%
After Taxes on Distributions and Sale of Fund Shares Class Y	10.99%	4.55%
Russell Midcap® Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	18.51%	6.26%	Jul. 01, 2011
Russell Midcap® Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	18.51%	6.26%	Jul. 01, 2011

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[1] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A shares and 1.25% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Munder Integrity Small/Mid-Cap Value Fund

Munder Integrity Small/Mid-Cap Value Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to seek to achieve capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Integrity Small/Mid-Cap Value Fund	Class A		Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Integrity Small/Mid-Cap Value Fund		Class A	Class Y
Management Fees		0.90%	0.90%
Distribution and/or Service (12b-1) Fees		0.25%	none
Other Expenses		35.27%	4.03%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements		36.42%	4.93%
Fee Waivers and/or Expense Reimbursements	[1]	(34.92%)	(3.68%)
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	[1]	1.50%	1.25%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Integrity Small/Mid-Cap Value Fund (USD $)	Class A	Class Y
1 Year	694	127
3 Years	5,756	1,151
5 Years	8,137	2,176
10 Years	9,931	4,744

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

Expense Example No Redemption Munder Integrity Small/Mid-Cap Value Fund (USD $)	Class A	Class Y
1 Year	694	127
3 Years	5,756	1,151
5 Years	8,137	2,176
10 Years	9,931	4,744

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 58% of the average value of its portfolio

PRINCIPAL INVESTMENT STRATEGIES

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of small- to mid-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Small- to mid-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell 2500TM Index ($42 million to $10.1 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of smaller or larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small- to mid-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that, in their view, are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of smaller or medium-sized companies tend to be more volatile than those of larger companies and smaller or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging markets countries, tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance compared to that of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	24.64	%
Best Quarter:	11.73	%	(quarter ended 3/31/12)
Worst Quarter:	-4.47	%	(quarter ended 6/30/12)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Integrity Small/Mid-Cap Value Fund	Average Annual Returns, 1 Year	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	15.18%	4.13%	Jul. 01, 2011
Class A	8.52%	0.05%	Jul. 01, 2011
After Taxes on Distributions Class Y	15.08%	4.06%
After Taxes on Distributions and Sale of Fund Shares Class Y	9.99%	3.51%
Russell 2500TM Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	19.21%	5.65%	Jul. 01, 2011
Russell 2500TM Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	19.21%	5.65%	Jul. 01, 2011

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[1] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A shares and 1.25% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder International Fund - Core Equity

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide long-term growth of capital.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2015-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 108% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

108.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues long-term growth of capital in the Fund by investing primarily in securities of companies in countries represented in the MSCI ACWI ex USA Index, but may also invest in companies from other countries.

Under normal circumstances, at least 80% of the Fund’s assets will be invested in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants). This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.

The advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify attractive stocks with low relative price multiples and positive trends in earnings forecasts.  The stock selection process is designed to produce a diversified portfolio that, relative to the MSCI ACWI ex USA Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend.

Fund investment allocation to countries and sectors tends to closely approximate the country and sector allocations of the MSCI ACWI ex USA Index, which concentrates its exposure in one or more countries, regions or sectors. The Fund will, however, be invested in a minimum of ten countries.

There is no limit on the market capitalization in which the Fund may invest; therefore, the Fund’s investments may include small-, mid- and large-capitalization companies.

From time to time, the advisor may use futures contracts and/or exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the equity markets of foreign developed and emerging markets countries.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates.  In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Emerging Markets Investing Risk

There are greater risks involved in investing in emerging market countries than those associated with investment in developed foreign markets. The risks of investing in foreign securities generally are amplified for investments in emerging markets securities.  Generally, markets in emerging market countries are less diverse and mature than those of developed countries and their political systems are less stable. Further, due to the smaller securities markets, lower trading volumes and less government regulation of securities markets in emerging market countries compared to those in developed countries, investments in emerging market securities generally are more illiquid and volatile and subject to a higher risk of settlement disruptions than investments in developed countries. Consequently, emerging market securities may be subject to relatively more abrupt and severe price declines.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices, in their view, that are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Geographic Focus Risk

The Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to the credit risk of the derivative’s counterparty, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover.  The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s Class Y shares, its least expensive class offered to a broad array of investors. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ. 

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund's performance from year to year and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	12.23%
Best Quarter:	21.92%	(quarter ended 6/30/09)
Worst Quarter:	-23.95%	(quarter ended 9/30/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

12.23%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.92%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(23.95%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

MSCI ACWI ex USA Index (Net Dividends) Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.83%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.89%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(0.16%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

MSCI ACWI ex USA Index (Net Dividends) Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.83%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.89%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(0.16%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

MSCI ACWI ex USA Index (Net Dividends) Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.83%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.89%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(0.16%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

MSCI ACWI ex USA Index (Net Dividends) Class I Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.83%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(2.89%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(0.16%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

1.90%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.05%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

3.00%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(1.48%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.52%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

696

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,154

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,786

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,479

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

696

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,154

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,786

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

3,479

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.01%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(7.56%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(5.97%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

1.89%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.05%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

3.74%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(1.47%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

2.27%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

330

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

864

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,673

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,788

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

230

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

864

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,673

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

3,788

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

20.90%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(7.25%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(5.74%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

2.22%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.05%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

3.07%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(1.80%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.27%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

129

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

597

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,284

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,119

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

129

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

597

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,284

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

3,119

Annual Return 2008

rr_AnnualReturn2008

(47.88%)

Annual Return 2009

rr_AnnualReturn2009

21.97%

Annual Return 2010

rr_AnnualReturn2010

9.58%

Annual Return 2011

rr_AnnualReturn2011

(15.67%)

Annual Return 2012

rr_AnnualReturn2012

23.08%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

23.08%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(6.28%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(4.76%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

22.01%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(6.66%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(5.12%)

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.79%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(4.99%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(3.75%)

Class I

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.80%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

4.83%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.05%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

5.68%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(4.67%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.01%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

103

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

822

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,034

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,992

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

103

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

822

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

2,034

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 4,992

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

23.46%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(6.06%)

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

(4.54%)

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 16, 2007

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[4] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2015 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.47% for Class A shares, 2.22% for Class C shares, 1.22% for Class Y shares and 0.96% for Class I shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

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Munder Micro-Cap Equity Fund

Munder Micro-Cap Equity Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Micro-Cap Equity Fund	Class A		Class B		Class C		Class K	Class R	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none		none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	5.00%	[3]	1.00%	[4]	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Micro-Cap Equity Fund		Class A	Class B	Class C	Class K	Class R		Class Y
Management Fees		1.00%	1.00%	1.00%	1.00%	1.00%		1.00%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	0.50%	[1]	none
Other Expenses		0.68%	0.71%	0.69%	0.94%	0.68%		0.69%
Acquired Fund Fees and Expenses		0.15%	0.15%	0.15%	0.15%	0.15%		0.15%
Total Annual Fund Operating Expenses	[2]	2.08%	2.86%	2.84%	2.09%	2.33%		1.84%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Micro-Cap Equity Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class Y
1 Year	749	789	387	212	236	187
3 Years	1,165	1,186	880	655	727	579
5 Years	1,606	1,709	1,499	1,124	1,245	996
10 Years	2,826	3,000	3,166	2,422	2,666	2,158

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

Expense Example No Redemption Munder Micro-Cap Equity Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class Y
1 Year	749	289	287	212	236	187
3 Years	1,165	886	880	655	727	579
5 Years	1,606	1,509	1,499	1,124	1,245	996
10 Years	2,826	3,000	3,166	2,422	2,666	2,158

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 58% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of micro-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Micro-capitalization companies means those companies with market capitalizations lower than the largest company in the bottom 75% (based on index weightings) of the Russell 2000® Index (consisting of companies with market capitalizations below $3.2 billion as of September 30, 2013). The Fund may, however, also invest in equity securities of larger companies.

The Fund focuses on undiscovered, small-sized companies in its attempt to provide investors with potentially higher returns than a fund that invests primarily in larger, more established companies. Since micro-capitalization companies are generally not as well known to investors and have less of an investor following than larger companies, they may provide higher returns due to inefficiencies in the marketplace.

The sub-advisor seeks to invest in companies that have strong potential for consistent earnings growth due to:

· a high level of profitability;

· solid management;

· a strong, competitive market position; or

· management interests that are aligned with shareholder interests.

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the micro-capitalization sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the sub-advisor, regardless of movements in the securities markets.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices, in their view, that are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Micro-Cap Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower. 

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	30.52	%
Best Quarter:	29.30	%	(quarter ended 6/30/09)
Worst Quarter:	-26.53	%	(quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Micro-Cap Equity Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	21.12%	3.15%	9.64%	11.44%	Dec. 26, 1996
Class A	14.17%	1.73%	8.75%	10.78%	Dec. 26, 1996
Class B	14.98%	1.85%	8.71%	10.21%	Feb. 24, 1997
Class C	18.92%	2.12%	8.54%	10.44%	Mar. 31, 1997
Class K	20.84%	2.90%	9.37%	11.11%	Dec. 31, 1996
Class R	20.54%	2.63%		4.44%	Jul. 29, 2004
After Taxes on Distributions Class Y	18.46%	2.20%	8.80%	10.68%
After Taxes on Distributions and Sale of Fund Shares Class Y	17.21%	2.53%	8.47%	10.24%
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class Y Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	7.94%	Dec. 26, 1996
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class A Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	7.94%	Dec. 26, 1996
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class B Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	7.86%	Feb. 24, 1997
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class C Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	8.22%	Mar. 31, 1997
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class K Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	7.94%	Dec. 31, 1996
Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class R Comparison (reflects no deductions for fees, expenses or taxes)	19.75%	1.46%	8.42%	4.13%	Jul. 29, 2004

The index returns from inception for Class Y, A, B, C, K and R shares are as of 1/1/97, 1/1/97, 3/1/97, 4/1/97, 1/1/97 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

[2] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

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Munder Mid-Cap Core Growth Fund

Munder Mid-Cap Core Growth Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide long-term capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Mid-Cap Core Growth Fund	Class A		Class B		Class C		Class K	Class R	Class R6	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none		none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	5.00%	[3]	1.00%	[4]	none	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Mid-Cap Core Growth Fund		Class A	Class B	Class C	Class K	Class R		Class R6		Class Y
Management Fees		0.75%	0.75%	0.75%	0.75%	0.75%		0.75%		0.75%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	0.50%	[1]	none		none
Other Expenses		0.33%	0.34%	0.33%	0.59%	0.33%		0.14%	[2]	0.33%
Acquired Fund Fees and Expenses		0.07%	0.07%	0.07%	0.07%	0.07%		0.07%		0.07%
Total Annual Fund Operating Expenses	[3]	1.40%	2.16%	2.15%	1.41%	1.65%		0.96%		1.15%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Mid-Cap Core Growth Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class R6	Class Y
1 Year	685	719	318	144	168	98	117
3 Years	970	976	673	447	520	306	365
5 Years	1,275	1,359	1,154	772	896	531	632
10 Years	2,140	2,300	2,482	1,691	1,953	1,177	1,398

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

Expense Example No Redemption Munder Mid-Cap Core Growth Fund (USD $)	Class A	Class B	Class C	Class K	Class R	Class R6	Class Y
1 Year	685	219	218	144	168	98	117
3 Years	970	676	673	447	520	306	365
5 Years	1,275	1,159	1,152	772	896	531	632
10 Years	2,140	2,300	2,482	1,691	1,953	1,177	1,398

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 25% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of mid-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Mid-capitalization companies means those companies with market capitalizations within the range of companies included in the S&P MidCap 400® Index ($479 million to $11.3 billion as of September 30, 2013) or within the range of companies included in the Russell Midcap® Index ($888 million to $27.5 billion as of September 30, 2013).

The Fund’s investment style, which focuses on both growth prospects and valuation, is known as GARP (Growth at a Reasonable Price). This blended process seeks to perform better than either a pure growth or pure value approach over a complete market cycle.

The advisor chooses the Fund’s investments by reviewing the earnings growth of all publicly traded mid-capitalization companies over the past three years and selecting from those companies primarily based on:  above-average, consistent earnings growth; financial stability; relative valuation; strength of industry position and management team; and price changes compared to the Russell Midcap® Index.

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.  From time to time, the advisor may use exchange-traded funds (ETFs) and/or futures to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the mid-capitalization sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to the credit risk of the derivative’s counterparty, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	23.24	%
Best Quarter:	16.48	%	(quarter ended 9/30/09)
Worst Quarter:	-25.26	%	(quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Mid-Cap Core Growth Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	16.01%	1.64%	10.77%	9.67%	Jun. 24, 1998
Class A	9.35%	0.25%	9.88%	6.55%	Jul. 03, 2000
Class B	9.83%	0.23%	9.84%	6.56%	Jul. 05, 2000
Class C	13.84%	0.62%	9.56%	5.70%	Jul. 14, 2000
Class K	15.70%	1.38%	10.49%	10.15%	Dec. 17, 2002
Class R	15.43%	1.13%		7.56%	Jul. 29, 2004
After Taxes on Distributions Class Y	16.01%	1.62%	10.72%	9.28%
After Taxes on Distributions and Sale of Fund Shares Class Y	10.41%	1.39%	9.65%	8.48%
Russell Midcap® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%	10.65%	7.38%	Jun. 24, 1998
Russell Midcap® Growth Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%	10.32%	5.51%	Jun. 24, 1998
Russell Midcap® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%	10.65%	6.67%	Jul. 03, 2000
Russell Midcap® Growth Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%	10.32%	1.59%	Jul. 03, 2000
Russell Midcap® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%	10.65%	6.67%	Jul. 05, 2000
Russell Midcap® Growth Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%	10.32%	1.59%	Jul. 05, 2000
Russell Midcap® Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%	10.65%	6.67%	Jul. 14, 2000
Russell Midcap® Growth Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%	10.32%	1.59%	Jul. 14, 2000
Russell Midcap® Index Class K Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%	10.65%	10.65%	Dec. 17, 2002
Russell Midcap® Growth Index Class K Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%	10.32%	10.32%	Dec. 17, 2002
Russell Midcap® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	17.28%	3.57%		8.09%	Jul. 29, 2004
Russell Midcap® Growth Index Class R Comparison (reflects no deductions for fees, expenses or taxes)	15.81%	3.23%		7.87%	Jul. 29, 2004

Average annual returns for Class C shares for periods prior to 10/31/03 are for Class II shares and reflect the fees and expenses of the Class II shares prior to that date. The index returns from inception for Class Y, A, B, C, K and R shares are as of 7/1/98, 7/1/00, 7/1/00, 7/1/00, 1/1/03 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K, R and R6 shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

[2] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Emerging Markets Small-Cap Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide long-term growth of capital.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 8 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the period from July 2, 2013 through September 30, 2013, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

27.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses and Total Annual Fund Operating Expenses are based on estimated expenses for the current fiscal year.

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues long-term growth of capital in the Fund by investing primarily in equity securities (i.e., common stocks, depositary receipts, preferred stocks, convertible securities, rights and warrants) of companies in emerging markets countries. Under normal circumstances, at least 80% of the Fund’s assets will be in securities of small-capitalization companies that are tied economically to emerging markets countries.

In selecting emerging market small-capitalization investments for the Fund, the advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify companies exhibiting improving business momentum and attractive valuations.  The stock selection process is designed to produce a diversified portfolio that, relative to the S&P® Emerging Plus SmallCap Index and the MSCI Emerging Markets Small Cap Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend. However, the Fund is not designed to replicate the performance of either of those indexes.

The advisor considers emerging markets countries to be the countries represented in the S&P® Emerging Plus SmallCap Index and the MSCI Emerging Markets Small Cap Index.  For purposes of this Fund, a small-capitalization company is any company with a market capitalization that is within the smallest 15% (based on market capitalization) of companies from each emerging markets country.

The Fund may also invest, to a limited extent, in companies from countries other than emerging markets countries and in securities of larger capitalization companies. In addition, the advisor may use futures contracts for hedging, cash management and direct investment purposes.  From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

The 80% test (described above) may not be changed without 60 days’ prior notice to shareholders.  For purposes of this test, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  The S&P® Emerging Plus SmallCap Index consists of the bottom 15% (based on market capitalization) of companies from each country represented in the S&P® Emerging BMI plus Korea.  The S&P® Emerging BMI includes companies domiciled in 20 emerging markets countries with float-adjusted market capitalizations of at least US$100 million and annual trading liquidity of at least US$50 million.  The MSCI Emerging Markets Small Cap Index is designed to measure equity market performance of 21 emerging markets and targets approximately 14% of each market’s free-float adjusted market capitalization.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization sector of equity markets in emerging markets countries.

Emerging Markets Investing Risk

There are greater risks involved in investing in emerging market countries than those associated with investment in developed foreign markets. The risks of investing in foreign securities generally are amplified for investments in emerging markets securities.  Generally, markets in emerging market countries are less diverse and mature than those of developed countries and their political systems are less stable. Further, due to the smaller securities markets, lower trading volumes and less government regulation of securities markets in emerging market countries compared to those in developed countries, investments in emerging market securities generally are more illiquid and volatile and subject to a higher risk of settlement disruptions than investments in securities of issuers in developed countries.  Consequently, emerging market securities may be subject to relatively more abrupt and severe price declines.

Foreign Securities Risk

In general, investments in foreign securities may be subject to additional risks not associated with investment in U.S. securities due to, among other things, differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small companies may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Geographic Focus Risk

The country allocation of the Fund’s investments will tend to closely approximate the country allocation of the Fund’s benchmark. The Fund’s benchmark may focus its exposure in one or more countries or regions and, as a result, the Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the assets underlying the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund commenced operations on July 2, 2013. Performance history will be available for the Fund after it has been in operation for a full calendar year.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

The Fund commenced operations on July 2, 2013. Performance history will be available for the Fund after it has been in operation for a full calendar year.

Class A Shares

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

1.10%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

9.54%

^[3]

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

10.89%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(9.16%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.73%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

716

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,719

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

716

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

2,719

Class Y Shares

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.10%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

9.54%

^[3]

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

10.64%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(9.16%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.48%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

151

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,231

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

151

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

$ 2,231

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Other Expenses and Total Annual Fund Operating Expenses are based on estimated expenses for the current fiscal year.

[4] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.73% for Class A shares and 1.48% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Index 500 Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide performance and income that is comparable to the S&P 500® Index.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in 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 5% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

5.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The sub-advisor invests, under normal circumstances, at least 80% of the Fund’s assets in equity securities of companies in the S&P 500® Index. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  In practice, the Fund typically holds all 500 of the stocks in the S&P 500® Index, which is a capitalization-weighted index that measures the performance of the large-capitalization sector of the U.S. stock market.

The Fund is managed through the use of a “quantitative” or “indexing” investment approach, which tries to replicate the composition and performance of the S&P 500® Index through statistical procedures.  The sub-advisor invests in stocks that are included in the S&P 500® Index in approximately the same proportions as they are represented in the index.  As a result, the sub-advisor does not use traditional methods of stock selection, i.e., it does not select stocks on the basis of economic, financial and market analysis.

The Fund seeks to achieve a correlation between the performance of its portfolio and the S&P 500® Index of at least 0.95.  A correlation of 1.0 would mean that the changes in the Fund’s price mirror exactly the changes in the S&P 500® Index.

The sub-advisor uses futures contracts to manage cash, accrued dividends and other non-performing assets in an effort to minimize performance disparity between the Fund and the S&P 500® Index.  From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Tracking Risk

The Fund’s ability to track the return of the S&P 500® Index is impacted by the fact that the Fund pays fees and transaction costs, while the Index does not; therefore, the Fund’s returns are likely to be lower than those of the Index. Tracking variance may also result from the impact of share purchases, redemptions and other factors not affecting the Index.

Index Strategy Risk

The Fund will invest in the securities included in the S&P 500® Index regardless of market trends. As a result, the Fund does not modify its investment strategy to respond to changes in the economy, which means it may be particularly susceptible to a general decline in the large-capitalization sector of the U.S. stock market.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty risk, the risk of mispricing or improper valuation and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used. There can be no assurance that the Fund will use derivatives to hedge any particular position or risk, nor can there be any assurance that a derivative hedge, if employed, will be successful.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year over the past ten years and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	19.32	%
Best Quarter:	15.83	%	(quarter ended 6/30/09)
Worst Quarter:	-22.12	%	(quarter ended 12/31/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

19.32%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.83%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(22.12%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The index returns from inception for Class Y, A, B, K and R shares are as of 12/1/91, 12/1/92, 11/1/95, 12/1/92 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

S&P 500® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.71%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 01, 1991

S&P 500® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.25%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 09, 1992

S&P 500® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.32%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 1995

S&P 500® Index Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

7.10%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.25%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 07, 1992

S&P 500® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.00%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.66%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.29%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

2.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

^[2]

Other Expenses

rr_OtherExpensesOverAssets

0.40%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

0.85%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

335

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

515

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

711

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,274

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

335

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

515

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

711

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,274

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

12.27%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.56%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

6.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.46%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 09, 1992

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

3.00%

^[3]

Management Fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

^[2]

Other Expenses

rr_OtherExpensesOverAssets

0.41%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.61%

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

464

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

708

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

976

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,707

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

164

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

508

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

876

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,707

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

11.76%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.61%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

6.21%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.54%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 31, 1995

Class K

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.66%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

0.86%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

274

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

476

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,060

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

88

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

274

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

476

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,060

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.08%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.97%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

6.40%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.53%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 07, 1992

Class R

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[4]

Other Expenses

rr_OtherExpensesOverAssets

0.40%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.10%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

607

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,341

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

112

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

350

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

607

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,341

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

14.78%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.72%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.34%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.20%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.39%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

0.59%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

60

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

189

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

330

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

739

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

60

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

189

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

330

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 739

Annual Return 2003

rr_AnnualReturn2003

28.20%

Annual Return 2004

rr_AnnualReturn2004

10.43%

Annual Return 2005

rr_AnnualReturn2005

4.51%

Annual Return 2006

rr_AnnualReturn2006

15.37%

Annual Return 2007

rr_AnnualReturn2007

5.08%

Annual Return 2008

rr_AnnualReturn2008

(37.31%)

Annual Return 2009

rr_AnnualReturn2009

26.43%

Annual Return 2010

rr_AnnualReturn2010

14.48%

Annual Return 2011

rr_AnnualReturn2011

1.54%

Annual Return 2012

rr_AnnualReturn2012

15.36%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.36%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

6.67%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.28%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 01, 1991

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

13.12%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

(0.43%)

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.60%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.10%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

12.94%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.84%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.74%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.02%

[1] The sales charge declines as the amount invested increases.

[2] The distributor has voluntarily agreed to waive a portion of its Rule 12b-1 fees with respect to Class A and Class B shares for the current fiscal year. The distributor may discontinue the fee waiver at any time in its sole discretion. As a result of the fee waivers, the Fund's 12b-1 Fees and Total Annual Fund Operating Expenses would be 0.15% and 0.75%, respectively, for Class A shares, and 0.50% and 1.11%, respectively, for Class B shares.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Bond Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s primary investment objective is to provide a high level of current income.

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

Its secondary objective is capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 373% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

373.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues the Fund’s investment objectives by investing, under normal circumstances, at least 80% of the Fund’s assets in a broad range of bonds. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.

The advisor uses bond market sector allocation, yield curve positioning, and comprehensive credit analysis to select securities for the Fund.

Bonds, also known as fixed income securities, in which the Fund may invest include without limitation:  U.S. government securities, including securities issued by agencies or instrumentalities of the U.S. government; long- and short-term corporate debt obligations; mortgage-backed securities, including collateralized mortgage obligations (CMOs) and commercial mortgage-backed securities (CMBS); asset-backed securities, including collateralized debt obligations (CDOs); and U.S. dollar-denominated obligations of foreign governments, corporations and banks (i.e., yankee bonds).

The bonds in which the Fund will invest will generally be rated investment grade or better, or if unrated, of comparable quality. However, the Fund may invest up to 20% of its total assets in debt securities that are rated below investment grade or in comparable unrated securities.

The Fund may purchase or sell securities on a when-issued, to-be-announced (TBA), delayed delivery or forward commitment basis and may engage in short-term trading of portfolio securities. The Fund may also utilize dollar roll transactions, which are series of purchase and sale transactions, to obtain market exposure to certain types of securities, particularly mortgage-backed securities. The advisor may enter into futures and/or credit default swap contracts and the advisor may use exchange-traded funds (ETFs).

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Credit (or Default) Risk

The Fund may lose money if an issuer of a fixed income security is unable or unwilling to make timely principal and/or interest payments or to otherwise honor its payment obligations.  Further, when an issuer suffers adverse changes in its financial condition or credit rating, the price of its debt obligations may decline and/or experience greater volatility.  A change in financial condition or credit rating of a fixed income security can also affect its liquidity and make it more difficult for the Fund to sell.

Interest Rate Risk

The value of a bond may decline due to an increase in the absolute level of interest rates, or changes in the spread between two rates, the shape of the yield curve or any other interest rate relationship.  Longer-term bonds are generally more sensitive to interest rate changes than shorter-term bonds. Generally, the longer the average maturity of the bonds held by the Fund, the more the Fund’s share price will fluctuate in response to interest rate changes.

Prepayment Risk

A substantial portion of the Fund may be invested in asset-backed and mortgage-backed securities.  Accordingly, the Fund may be subject to higher prepayment risk than a Fund with a higher concentration in other types of fixed income securities. The Fund may experience losses when an issuer exercises its right to pay principal on an obligation held by the Fund earlier than expected. This may happen during a period of declining interest rates. Under these circumstances, the Fund may be unable to recoup all of its initial investment and will suffer from having to reinvest in lower yielding securities. The loss of higher yielding securities and the reinvestment at lower interest rates can reduce the Fund’s income, total return and share price. Rates of prepayment, faster or slower than expected, could reduce the Fund’s yield, increase the volatility of the Fund and/or cause a decline in net asset value.

When-Issued Securities, To-Be-Announced, Delayed Delivery and Forward Commitment Risk

A purchase of “when-issued” securities refers to a transaction made conditionally because the securities, although authorized, have not yet been issued. In a TBA transaction, a seller agrees to deliver a mortgage-backed security at a future date; however, the seller does not specify the particular mortgage-backed securities to be delivered. Instead, the purchaser agrees to accept any security that meets specified terms. A delayed delivery or forward commitment transaction involves a contract to purchase or sell securities for a fixed price at a future date beyond the customary settlement period. Purchasing or selling securities on a when-issued, TBA, delayed delivery or forward commitment basis involves the risk that the value of the securities may change by the time they are actually issued or delivered. Purchasing securities in a TBA transaction also involves the risk that the security that the Fund is required to buy in the transaction may be worth less than an identical security. Each of these transactions also involves the risk that the counterparty may fail to deliver the security or cash on the settlement date. In some cases, the Fund may sell a security on a delayed delivery basis that it does not own, which may subject the Fund to additional risks generally associated with short sales. Among other things, the market price of the security may increase after the Fund enters into the delayed delivery transaction, and the Fund will suffer a loss when it purchases the security at a higher price in order to make delivery. In addition, the Fund may not always be able to purchase the security it is obligated to deliver at a particular time or at an acceptable price.

Dollar Roll Transaction Risk

A dollar roll involves potential risks of loss that are different from those related to securities underlying the transactions. The Fund may be required to purchase securities at a higher price than may otherwise be available on the open market. Since the counterparty in the transaction is required to deliver a similar, but not identical, security to the Fund, the security that the Fund is required to buy under the dollar roll may be worth less than an identical security. There is no assurance that the Fund’s use of cash that it receives from a dollar roll will provide a return that exceeds borrowing costs.

Below Investment Grade Securities Risk

Below investment grade fixed income securities, also known as “junk bonds,” may be subject to greater risks than other fixed income securities, including greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment grade fixed income securities.

Short-Term Trading Risk

The Fund may buy and sell the same security within a short period of time.  The frequency of trading within the Fund impacts portfolio turnover rates.  A high rate of portfolio turnover (100% or more) could produce higher trading costs and taxable distributions, which would detract from the Fund’s performance.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Derivatives Risk

Derivatives, such as futures or credit default swap contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used. There can be no assurance that the Fund will use derivatives to hedge any particular position or risk, nor can there be any assurance that a derivative hedge, if employed, will be successful.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year over the past ten years and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	-0.91%
Best Quarter:	6.22%	(quarter ended 9/30/09)
Worst Quarter:	-3.05%	(quarter ended 6/30/04)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(0.91%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.22%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2004

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.05%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and K shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The index returns from inception for Class Y, A, B, C and K shares are as of 12/1/91, 12/1/92, 3/1/96, 4/1/96 and 12/1/92, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and K shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Barclays U.S. Aggregate Bond Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.22%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.95%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.51%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 01, 1991

Barclays U.S. Aggregate Bond Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.22%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.95%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.40%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 09, 1992

Barclays U.S. Aggregate Bond Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.22%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.95%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.17%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 13, 1996

Barclays U.S. Aggregate Bond Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.22%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.95%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.25%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 25, 1996

Barclays U.S. Aggregate Bond Index Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.22%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.95%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.40%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 23, 1992

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.00%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.54%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.21%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

0.87%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

485

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

736

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,007

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,778

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

485

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

736

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,007

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,778

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

3.08%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.15%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

4.51%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.38%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 09, 1992

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.54%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.96%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.62%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

665

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

882

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,226

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,063

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

165

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

582

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,026

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,063

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

1.61%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.89%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

4.31%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.03%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 13, 1996

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[6]

Management Fees

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.54%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.96%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.62%

^[3],[4]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

265

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

582

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,026

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,258

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

165

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

582

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,026

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,258

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

5.56%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

5.21%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

4.14%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 25, 1996

Class K

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.79%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.21%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

0.87%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

89

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

632

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,436

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

89

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

350

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

632

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,436

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

7.40%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

6.01%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

4.93%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 23, 1992

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.40%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.54%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

0.96%

^[3]

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[4]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

0.62%

^[3],[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

63

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

272

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

498

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,147

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

63

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

272

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

498

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,147

Annual Return 2003

rr_AnnualReturn2003

5.56%

Annual Return 2004

rr_AnnualReturn2004

3.94%

Annual Return 2005

rr_AnnualReturn2005

1.85%

Annual Return 2006

rr_AnnualReturn2006

4.63%

Annual Return 2007

rr_AnnualReturn2007

4.63%

Annual Return 2008

rr_AnnualReturn2008

0.64%

Annual Return 2009

rr_AnnualReturn2009

9.16%

Annual Return 2010

rr_AnnualReturn2010

7.53%

Annual Return 2011

rr_AnnualReturn2011

6.55%

Annual Return 2012

rr_AnnualReturn2012

7.67%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

7.67%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

6.27%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

5.19%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.76%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 01, 1991

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

6.33%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.65%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

3.53%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.62%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

4.96%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

4.40%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

3.45%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.59%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[4] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually effective November 1, 2012 through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 0.85% for Class A and K shares, 1.60% for Class B and C shares, and 0.60% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[6] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Integrity Small/Mid-Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to seek to achieve capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 58% of the average value of its portfolio

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of small- to mid-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Small- to mid-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell 2500TM Index ($42 million to $10.1 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of smaller or larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small- to mid-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that, in their view, are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of smaller or medium-sized companies tend to be more volatile than those of larger companies and smaller or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging markets countries, tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance compared to that of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund's performance compared to that of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	24.64	%
Best Quarter:	11.73	%	(quarter ended 3/31/12)
Worst Quarter:	-4.47	%	(quarter ended 6/30/12)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

24.64%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.73%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.47%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Russell 2500TM Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.21%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.65%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Russell 2500TM Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.21%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.65%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

35.27%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

36.42%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(34.92%)

^[3]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.50%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

694

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

5,756

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

8,137

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

9,931

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

694

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

5,756

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

8,137

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

9,931

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

8.52%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

0.05%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.90%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

4.03%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

4.93%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(3.68%)

^[3]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.25%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,151

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,176

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

4,744

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

127

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,151

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

2,176

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 4,744

Annual Return 2012

rr_AnnualReturn2012

15.18%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.18%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.13%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.08%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.06%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

9.99%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

3.51%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A shares and 1.25% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Micro-Cap Equity Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in 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 58% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

58.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of micro-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Micro-capitalization companies means those companies with market capitalizations lower than the largest company in the bottom 75% (based on index weightings) of the Russell 2000® Index (consisting of companies with market capitalizations below $3.2 billion as of September 30, 2013). The Fund may, however, also invest in equity securities of larger companies.

The Fund focuses on undiscovered, small-sized companies in its attempt to provide investors with potentially higher returns than a fund that invests primarily in larger, more established companies. Since micro-capitalization companies are generally not as well known to investors and have less of an investor following than larger companies, they may provide higher returns due to inefficiencies in the marketplace.

The sub-advisor seeks to invest in companies that have strong potential for consistent earnings growth due to:

· a high level of profitability;

· solid management;

· a strong, competitive market position; or

· management interests that are aligned with shareholder interests.

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the micro-capitalization sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the sub-advisor, regardless of movements in the securities markets.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices, in their view, that are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Micro-Cap Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower. 

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year over the past ten years and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	30.52	%
Best Quarter:	29.30	%	(quarter ended 6/30/09)
Worst Quarter:	-26.53	%	(quarter ended 12/31/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

30.52%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

29.30%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(26.53%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The index returns from inception for Class Y, A, B, C, K and R shares are as of 1/1/97, 1/1/97, 3/1/97, 4/1/97, 1/1/97 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K and R shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.94%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 26, 1996

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.94%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 26, 1996

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.86%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 24, 1997

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.22%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 1997

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.94%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1996

Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

19.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.46%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.42%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.13%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.08%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

749

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,165

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,606

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,826

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

749

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

1,165

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,606

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,826

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

14.17%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.73%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.75%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.78%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 26, 1996

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[4]

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.71%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.86%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

789

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,186

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,709

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,000

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

289

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

886

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,509

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

3,000

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

14.98%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.85%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.71%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.21%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 24, 1997

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.69%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.84%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

387

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

880

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,499

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

3,166

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

287

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

880

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,499

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

3,166

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.92%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

2.12%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.54%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.44%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 1997

Class K

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.94%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.09%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

212

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

655

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,124

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,422

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

212

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

655

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,124

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,422

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

20.84%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

2.90%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.37%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

11.11%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1996

Class R

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[6]

Other Expenses

rr_OtherExpensesOverAssets

0.68%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.33%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

236

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

727

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,245

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,666

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

236

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

727

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,245

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,666

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

20.54%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

2.63%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.44%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.69%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.15%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.84%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

187

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

579

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

996

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,158

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

187

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

579

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

996

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,158

Annual Return 2003

rr_AnnualReturn2003

64.71%

Annual Return 2004

rr_AnnualReturn2004

22.81%

Annual Return 2005

rr_AnnualReturn2005

11.70%

Annual Return 2006

rr_AnnualReturn2006

6.72%

Annual Return 2007

rr_AnnualReturn2007

(10.89%)

Annual Return 2008

rr_AnnualReturn2008

(44.46%)

Annual Return 2009

rr_AnnualReturn2009

36.68%

Annual Return 2010

rr_AnnualReturn2010

28.50%

Annual Return 2011

rr_AnnualReturn2011

(1.17%)

Annual Return 2012

rr_AnnualReturn2012

21.12%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

21.12%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.15%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.64%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

11.44%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 26, 1996

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.46%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

2.20%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.80%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.68%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.21%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

2.53%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

8.47%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.24%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[6] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

XML

Munder International Small-Cap Fund

Munder International Small-Cap Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide long-term growth of capital.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder International Small-Cap Fund	Class A		Class C		Class R6	Class Y	Class I
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	1.00%	[3]	none	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder International Small-Cap Fund		Class A	Class C	Class R6		Class Y	Class I
Management Fees		0.95%	0.95%	0.95%		0.95%	0.95%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	none		none	none
Other Expenses		0.67%	0.67%	0.38%	[1]	0.65%	0.33%
Acquired Fund Fees and Expenses		0.03%	0.03%	0.03%		0.03%	0.03%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	[2]	1.90%	2.65%	1.36%		1.63%	1.31%
Fee Waiver and/or Expense Reimbursement	[3]	(0.52%)	(0.52%)	(0.23%)		(0.50%)	(0.33%)
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	[2][3]	1.38%	2.13%	1.13%		1.13%	0.98%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder International Small-Cap Fund (USD $)	Class A	Class C	Class R6	Class Y	Class I
1 Year	683	316	115	115	100
3 Years	1,067	774	408	465	383
5 Years	1,475	1,359	722	839	687
10 Years	2,611	2,945	1,614	1,891	1,550

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

Expense Example No Redemption Munder International Small-Cap Fund (USD $)	Class A	Class C	Class R6	Class Y	Class I
1 Year	683	216	115	115	100
3 Years	1,067	774	408	465	383
5 Years	1,475	1,359	722	839	687
10 Years	2,611	2,945	1,614	1,891	1,550

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 88% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term growth of capital in the Fund by investing primarily in equity securities (i.e., common stocks, depositary receipts, preferred stocks, convertible securities, rights and warrants) of companies in countries represented in the S&P® Developed ex-U.S. SmallCap Index, but may also invest in companies from other countries, including emerging market countries.  The S&P® Developed ex-U.S. SmallCap Index consists of the stocks representing the lowest 15% of float-adjusted market capitalization in each country other than the U.S. represented in the S&P®Developed Broad Market Index (BMI). The S&P®Developed BMI includes all listed shares of companies from 26 developed countries with float-adjusted market capitalizations of at least US$100 million and annual trading value of at least US$50 million.

Under normal circumstances, at least 80% of the Fund’s assets will be invested in securities of small-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes. With respect to each country in which the Fund invests, a small-capitalization company means any company with a market capitalization that is within such country’s smallest 15% based on market capitalization. The Fund may, however, also invest in equity securities of larger companies.

The advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify attractive stocks with low relative price multiples and positive trends in earnings forecasts.  The stock selection process is designed to produce a diversified portfolio that, relative to the S&P® Developed ex-U.S. SmallCap Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend.

Fund investment allocation to countries and sectors tends to closely approximate the country and sector allocations of the S&P®Developed ex-U.S. SmallCap Index, which concentrates its exposure in one or more countries, regions or sectors. The Fund will, however, be invested in a minimum of ten countries.

From time to time, the advisor may use futures contracts and/or exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization sector of developed country equity markets outside of the U.S.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small issuers may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Geographic Focus Risk

The Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s Class Y shares, its least expensive class offered to a broad array of investors. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ. 

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	21.99	%
Best Quarter:	27.25	%	(quarter ended 6/30/09)
Worst Quarter:	-27.05	%	(quarter ended 9/30/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder International Small-Cap Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	24.07%	(2.69%)	(2.32%)	Aug. 17, 2007
Class A	16.99%	(4.01%)	(3.54%)	Aug. 17, 2007
Class C	21.86%	(3.65%)	(3.27%)	Aug. 17, 2007
Class I	24.32%	(2.46%)	(2.05%)	Aug. 17, 2007
After Taxes on Distributions Class Y	23.99%	(2.72%)	(2.35%)
After Taxes on Distributions and Sale of Fund Shares Class Y	16.25%	(2.13%)	(1.83%)
S&P® Developed ex-U.S. SmallCap Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	18.55%	(1.26%)	0.03%	Aug. 17, 2007
S&P® Developed ex-U.S. SmallCap Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	18.55%	(1.26%)	0.03%	Aug. 17, 2007
S&P® Developed ex-U.S. SmallCap Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	18.55%	(1.26%)	0.03%	Aug. 17, 2007
S&P® Developed ex-U.S. SmallCap Index Class I Comparison (reflects no deductions for fees, expenses or taxes)	18.55%	(1.26%)	0.03%	Aug. 17, 2007

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C, R6 and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

[2] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[3] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2014 to waive a portion of the Management Fees so that the Fund pays a fee of 0.90% on all assets. In addition, MCM has agreed contractually effective June 1, 2013 through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.35% for Class A shares, 2.10% for Class C shares, 1.10% for Class R6 shares, 1.10% for Class Y shares and 0.95% for Class I shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

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Munder Emerging Markets Small-Cap Fund

Munder Emerging Markets Small-Cap Fund

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide long-term growth of capital.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 8 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Emerging Markets Small-Cap Fund	Class A Shares		Class Y Shares
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Emerging Markets Small-Cap Fund		Class A Shares	Class Y Shares
Management Fees		1.10%	1.10%
Distribution and/or Service (12b-1) Fees		0.25%	none
Other Expenses	[1]	9.54%	9.54%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	[1]	10.89%	10.64%
Fee Waivers and/or Expense Reimbursements	[2]	(9.16%)	(9.16%)
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	[1][2]	1.73%	1.48%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Emerging Markets Small-Cap Fund (USD $)	Class A Shares	Class Y Shares
1 Year	716	151
3 Years	2,719	2,231

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

Expense Example No Redemption Munder Emerging Markets Small-Cap Fund (USD $)	Class A Shares	Class Y Shares
1 Year	716	151
3 Years	2,719	2,231

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the period from July 2, 2013 through September 30, 2013, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term growth of capital in the Fund by investing primarily in equity securities (i.e., common stocks, depositary receipts, preferred stocks, convertible securities, rights and warrants) of companies in emerging markets countries. Under normal circumstances, at least 80% of the Fund’s assets will be in securities of small-capitalization companies that are tied economically to emerging markets countries.

In selecting emerging market small-capitalization investments for the Fund, the advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify companies exhibiting improving business momentum and attractive valuations.  The stock selection process is designed to produce a diversified portfolio that, relative to the S&P® Emerging Plus SmallCap Index and the MSCI Emerging Markets Small Cap Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend. However, the Fund is not designed to replicate the performance of either of those indexes.

The advisor considers emerging markets countries to be the countries represented in the S&P® Emerging Plus SmallCap Index and the MSCI Emerging Markets Small Cap Index.  For purposes of this Fund, a small-capitalization company is any company with a market capitalization that is within the smallest 15% (based on market capitalization) of companies from each emerging markets country.

The Fund may also invest, to a limited extent, in companies from countries other than emerging markets countries and in securities of larger capitalization companies. In addition, the advisor may use futures contracts for hedging, cash management and direct investment purposes.  From time to time, the advisor may use exchange-traded funds (ETFs) to manage cash.

The 80% test (described above) may not be changed without 60 days’ prior notice to shareholders.  For purposes of this test, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  The S&P® Emerging Plus SmallCap Index consists of the bottom 15% (based on market capitalization) of companies from each country represented in the S&P® Emerging BMI plus Korea.  The S&P® Emerging BMI includes companies domiciled in 20 emerging markets countries with float-adjusted market capitalizations of at least US$100 million and annual trading liquidity of at least US$50 million.  The MSCI Emerging Markets Small Cap Index is designed to measure equity market performance of 21 emerging markets and targets approximately 14% of each market’s free-float adjusted market capitalization.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the small-capitalization sector of equity markets in emerging markets countries.

Emerging Markets Investing Risk

There are greater risks involved in investing in emerging market countries than those associated with investment in developed foreign markets. The risks of investing in foreign securities generally are amplified for investments in emerging markets securities.  Generally, markets in emerging market countries are less diverse and mature than those of developed countries and their political systems are less stable. Further, due to the smaller securities markets, lower trading volumes and less government regulation of securities markets in emerging market countries compared to those in developed countries, investments in emerging market securities generally are more illiquid and volatile and subject to a higher risk of settlement disruptions than investments in securities of issuers in developed countries.  Consequently, emerging market securities may be subject to relatively more abrupt and severe price declines.

Foreign Securities Risk

In general, investments in foreign securities may be subject to additional risks not associated with investment in U.S. securities due to, among other things, differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Small Company Stock Risk

Small companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small companies tend to be more volatile than those of larger companies and small companies may be subject to greater degrees of changes in their earnings and prospects.  Since small company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Geographic Focus Risk

The country allocation of the Fund’s investments will tend to closely approximate the country allocation of the Fund’s benchmark. The Fund’s benchmark may focus its exposure in one or more countries or regions and, as a result, the Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the assets underlying the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The Fund commenced operations on July 2, 2013. Performance history will be available for the Fund after it has been in operation for a full calendar year.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[1] Other Expenses and Total Annual Fund Operating Expenses are based on estimated expenses for the current fiscal year.

[2] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.73% for Class A shares and 1.48% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

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Munder Bond Fund

Munder Bond Fund

INVESTMENT OBJECTIVE

The Fund’s primary investment objective is to provide a high level of current income.

Its secondary objective is capital appreciation.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Bond Fund	Class A		Class B		Class C		Class K	Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	4.00%	[1]	none		none		none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	5.00%	[3]	1.00%	[4]	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder Bond Fund		Class A	Class B	Class C	Class K	Class Y
Management Fees		0.40%	0.40%	0.40%	0.40%	0.40%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	none
Other Expenses		0.54%	0.54%	0.54%	0.79%	0.54%
Acquired Fund Fees and Expenses		0.02%	0.02%	0.02%	0.02%	0.02%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	[1]	1.21%	1.96%	1.96%	1.21%	0.96%
Fee Waivers and/or Expense Reimbursements	[2]	(0.34%)	(0.34%)	(0.34%)	(0.34%)	(0.34%)
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	[1][2]	0.87%	1.62%	1.62%	0.87%	0.62%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder Bond Fund (USD $)	Class A	Class B	Class C	Class K	Class Y
1 Year	485	665	265	89	63
3 Years	736	882	582	350	272
5 Years	1,007	1,226	1,026	632	498
10 Years	1,778	2,063	2,258	1,436	1,147

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

Expense Example No Redemption Munder Bond Fund (USD $)	Class A	Class B	Class C	Class K	Class Y
1 Year	485	165	165	89	63
3 Years	736	582	582	350	272
5 Years	1,007	1,026	1,026	632	498
10 Years	1,778	2,063	2,258	1,436	1,147

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 373% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues the Fund’s investment objectives by investing, under normal circumstances, at least 80% of the Fund’s assets in a broad range of bonds. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.

The advisor uses bond market sector allocation, yield curve positioning, and comprehensive credit analysis to select securities for the Fund.

Bonds, also known as fixed income securities, in which the Fund may invest include without limitation:  U.S. government securities, including securities issued by agencies or instrumentalities of the U.S. government; long- and short-term corporate debt obligations; mortgage-backed securities, including collateralized mortgage obligations (CMOs) and commercial mortgage-backed securities (CMBS); asset-backed securities, including collateralized debt obligations (CDOs); and U.S. dollar-denominated obligations of foreign governments, corporations and banks (i.e., yankee bonds).

The bonds in which the Fund will invest will generally be rated investment grade or better, or if unrated, of comparable quality. However, the Fund may invest up to 20% of its total assets in debt securities that are rated below investment grade or in comparable unrated securities.

The Fund may purchase or sell securities on a when-issued, to-be-announced (TBA), delayed delivery or forward commitment basis and may engage in short-term trading of portfolio securities. The Fund may also utilize dollar roll transactions, which are series of purchase and sale transactions, to obtain market exposure to certain types of securities, particularly mortgage-backed securities. The advisor may enter into futures and/or credit default swap contracts and the advisor may use exchange-traded funds (ETFs).

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Credit (or Default) Risk

The Fund may lose money if an issuer of a fixed income security is unable or unwilling to make timely principal and/or interest payments or to otherwise honor its payment obligations.  Further, when an issuer suffers adverse changes in its financial condition or credit rating, the price of its debt obligations may decline and/or experience greater volatility.  A change in financial condition or credit rating of a fixed income security can also affect its liquidity and make it more difficult for the Fund to sell.

Interest Rate Risk

The value of a bond may decline due to an increase in the absolute level of interest rates, or changes in the spread between two rates, the shape of the yield curve or any other interest rate relationship.  Longer-term bonds are generally more sensitive to interest rate changes than shorter-term bonds. Generally, the longer the average maturity of the bonds held by the Fund, the more the Fund’s share price will fluctuate in response to interest rate changes.

Prepayment Risk

A substantial portion of the Fund may be invested in asset-backed and mortgage-backed securities.  Accordingly, the Fund may be subject to higher prepayment risk than a Fund with a higher concentration in other types of fixed income securities. The Fund may experience losses when an issuer exercises its right to pay principal on an obligation held by the Fund earlier than expected. This may happen during a period of declining interest rates. Under these circumstances, the Fund may be unable to recoup all of its initial investment and will suffer from having to reinvest in lower yielding securities. The loss of higher yielding securities and the reinvestment at lower interest rates can reduce the Fund’s income, total return and share price. Rates of prepayment, faster or slower than expected, could reduce the Fund’s yield, increase the volatility of the Fund and/or cause a decline in net asset value.

When-Issued Securities, To-Be-Announced, Delayed Delivery and Forward Commitment Risk

A purchase of “when-issued” securities refers to a transaction made conditionally because the securities, although authorized, have not yet been issued. In a TBA transaction, a seller agrees to deliver a mortgage-backed security at a future date; however, the seller does not specify the particular mortgage-backed securities to be delivered. Instead, the purchaser agrees to accept any security that meets specified terms. A delayed delivery or forward commitment transaction involves a contract to purchase or sell securities for a fixed price at a future date beyond the customary settlement period. Purchasing or selling securities on a when-issued, TBA, delayed delivery or forward commitment basis involves the risk that the value of the securities may change by the time they are actually issued or delivered. Purchasing securities in a TBA transaction also involves the risk that the security that the Fund is required to buy in the transaction may be worth less than an identical security. Each of these transactions also involves the risk that the counterparty may fail to deliver the security or cash on the settlement date. In some cases, the Fund may sell a security on a delayed delivery basis that it does not own, which may subject the Fund to additional risks generally associated with short sales. Among other things, the market price of the security may increase after the Fund enters into the delayed delivery transaction, and the Fund will suffer a loss when it purchases the security at a higher price in order to make delivery. In addition, the Fund may not always be able to purchase the security it is obligated to deliver at a particular time or at an acceptable price.

Dollar Roll Transaction Risk

A dollar roll involves potential risks of loss that are different from those related to securities underlying the transactions. The Fund may be required to purchase securities at a higher price than may otherwise be available on the open market. Since the counterparty in the transaction is required to deliver a similar, but not identical, security to the Fund, the security that the Fund is required to buy under the dollar roll may be worth less than an identical security. There is no assurance that the Fund’s use of cash that it receives from a dollar roll will provide a return that exceeds borrowing costs.

Below Investment Grade Securities Risk

Below investment grade fixed income securities, also known as “junk bonds,” may be subject to greater risks than other fixed income securities, including greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment grade fixed income securities.

Short-Term Trading Risk

The Fund may buy and sell the same security within a short period of time.  The frequency of trading within the Fund impacts portfolio turnover rates.  A high rate of portfolio turnover (100% or more) could produce higher trading costs and taxable distributions, which would detract from the Fund’s performance.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Derivatives Risk

Derivatives, such as futures or credit default swap contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to counterparty credit risk, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used. There can be no assurance that the Fund will use derivatives to hedge any particular position or risk, nor can there be any assurance that a derivative hedge, if employed, will be successful.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	-0.91%
Best Quarter:	6.22%	(quarter ended 9/30/09)
Worst Quarter:	-3.05%	(quarter ended 6/30/04)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder Bond Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	7.67%	6.27%	5.19%	5.76%	Dec. 01, 1991
Class A	3.08%	5.15%	4.51%	5.38%	Dec. 09, 1992
Class B	1.61%	4.89%	4.31%	5.03%	Mar. 13, 1996
Class C	5.56%	5.21%	4.14%	4.59%	Mar. 25, 1996
Class K	7.40%	6.01%	4.93%	5.59%	Nov. 23, 1992
After Taxes on Distributions Class Y	6.33%	4.65%	3.53%	3.62%
After Taxes on Distributions and Sale of Fund Shares Class Y	4.96%	4.40%	3.45%	3.59%
Barclays U.S. Aggregate Bond Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)	4.22%	5.95%	5.18%	6.51%	Dec. 01, 1991
Barclays U.S. Aggregate Bond Index Class A Comparison (reflects no deductions for fees, expenses or taxes)	4.22%	5.95%	5.18%	6.40%	Dec. 09, 1992
Barclays U.S. Aggregate Bond Index Class B Comparison (reflects no deductions for fees, expenses or taxes)	4.22%	5.95%	5.18%	6.17%	Mar. 13, 1996
Barclays U.S. Aggregate Bond Index Class C Comparison (reflects no deductions for fees, expenses or taxes)	4.22%	5.95%	5.18%	6.25%	Mar. 25, 1996
Barclays U.S. Aggregate Bond Index Class K Comparison (reflects no deductions for fees, expenses or taxes)	4.22%	5.95%	5.18%	6.40%	Nov. 23, 1992

The index returns from inception for Class Y, A, B, C and K shares are as of 12/1/91, 12/1/92, 3/1/96, 4/1/96 and 12/1/92, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C and K shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[2] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually effective November 1, 2012 through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 0.85% for Class A and K shares, 1.60% for Class B and C shares, and 0.60% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Mid-Cap Core Growth Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to provide long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in 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 25% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

25.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The advisor pursues long-term capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of mid-capitalization companies. This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Mid-capitalization companies means those companies with market capitalizations within the range of companies included in the S&P MidCap 400® Index ($479 million to $11.3 billion as of September 30, 2013) or within the range of companies included in the Russell Midcap® Index ($888 million to $27.5 billion as of September 30, 2013).

The Fund’s investment style, which focuses on both growth prospects and valuation, is known as GARP (Growth at a Reasonable Price). This blended process seeks to perform better than either a pure growth or pure value approach over a complete market cycle.

The advisor chooses the Fund’s investments by reviewing the earnings growth of all publicly traded mid-capitalization companies over the past three years and selecting from those companies primarily based on:  above-average, consistent earnings growth; financial stability; relative valuation; strength of industry position and management team; and price changes compared to the Russell Midcap® Index.

Although the Fund will primarily be invested in domestic securities, up to 25% of the Fund’s assets may be invested in foreign securities.  From time to time, the advisor may use exchange-traded funds (ETFs) and/or futures to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the mid-capitalization sector of the U.S. stock market.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to the credit risk of the derivative’s counterparty, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover. The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund’s performance from year to year over the past ten years and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual returns in the bar chart are for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the changes in the Fund's performance from year to year over the past ten years and by showing the Fund's average annual total returns for different calendar periods over the life of the Fund compared to those of two broad-based securities market indices.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	23.24	%
Best Quarter:	16.48	%	(quarter ended 9/30/09)
Worst Quarter:	-25.26	%	(quarter ended 12/31/08)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

23.24%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

16.48%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(25.26%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K, R and R6 shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Average annual returns for Class C shares for periods prior to 10/31/03 are for Class II shares and reflect the fees and expenses of the Class II shares prior to that date. The index returns from inception for Class Y, A, B, C, K and R shares are as of 7/1/98, 7/1/00, 7/1/00, 7/1/00, 1/1/03 and 8/1/04, respectively. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, B, C, K, R and R6 shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses. No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Russell Midcap® Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.38%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 24, 1998

Russell Midcap® Growth Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.32%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.51%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 24, 1998

Russell Midcap® Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.67%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 03, 2000

Russell Midcap® Growth Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.32%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

1.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 03, 2000

Russell Midcap® Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.67%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 05, 2000

Russell Midcap® Growth Index Class B Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.32%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

1.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 05, 2000

Russell Midcap® Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.67%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 14, 2000

Russell Midcap® Growth Index Class C Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.32%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

1.59%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 14, 2000

Russell Midcap® Index Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.65%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 17, 2002

Russell Midcap® Growth Index Class K Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.32%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.32%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 17, 2002

Russell Midcap® Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

17.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.57%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.09%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Russell Midcap® Growth Index Class R Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.81%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

3.23%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.87%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.40%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

685

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

970

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,275

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,140

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

685

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

970

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,275

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,140

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

9.35%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.25%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.88%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.55%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 03, 2000

Class B

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

5.00%

^[4]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.34%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.16%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

719

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

976

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,359

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,300

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

219

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

676

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,159

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,300

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

9.83%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.23%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.84%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.56%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 05, 2000

Class C

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

1.00%

^[5]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

2.15%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

318

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

673

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,154

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,482

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

218

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

673

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,152

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,482

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

13.84%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

0.62%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.56%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.70%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 14, 2000

Class K

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.59%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.41%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

144

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

447

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

772

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,691

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

144

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

447

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

772

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,691

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.70%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.38%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.49%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

10.15%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 17, 2002

Class R

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[6]

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.65%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

168

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

520

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

896

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,953

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

168

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

520

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

896

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,953

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

15.43%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.13%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

7.56%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 29, 2004

Class R6

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.14%

^[7]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

0.96%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

98

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,177

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

98

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

306

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

531

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,177

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

No performance information is provided for Class R6 shares because that class was not in operation for a full calendar year as of December 31, 2012.

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.07%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

1.15%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

117

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

365

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

632

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,398

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

117

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

365

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

632

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,398

Annual Return 2003

rr_AnnualReturn2003

37.07%

Annual Return 2004

rr_AnnualReturn2004

22.30%

Annual Return 2005

rr_AnnualReturn2005

13.11%

Annual Return 2006

rr_AnnualReturn2006

11.82%

Annual Return 2007

rr_AnnualReturn2007

20.97%

Annual Return 2008

rr_AnnualReturn2008

(43.45%)

Annual Return 2009

rr_AnnualReturn2009

32.80%

Annual Return 2010

rr_AnnualReturn2010

25.48%

Annual Return 2011

rr_AnnualReturn2011

(0.77%)

Annual Return 2012

rr_AnnualReturn2012

16.01%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.01%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.64%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.77%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

9.67%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 24, 1998

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.01%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.62%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

10.72%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

9.28%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

10.41%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

1.39%

Average Annual Returns, 10 Years

rr_AverageAnnualReturnYear10

9.65%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

8.48%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[4] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class B shares within six years of purchase and declines over time.

[5] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[6] Under the Fund's Distribution Agreement, Rule 12b-1 fees are limited to 0.50% of the average daily net assets of the Fund attributable to its Class R shares.

[7] For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

XML

Munder International Fund - Core Equity

Munder International Fund - Core Equity

INVESTMENT OBJECTIVE

The Fund’s investment objective is to provide long-term growth of capital.

FEES & EXPENSES OF THE FUND

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 10 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder International Fund - Core Equity	Class A		Class C		Class Y	Class I
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.50%	[1]	none		none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)	none	[2]	1.00%	[3]	none	none

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Munder International Fund - Core Equity		Class A	Class C	Class Y	Class I
Management Fees		0.80%	0.80%	0.80%	0.80%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	none	none
Other Expenses		1.90%	1.89%	2.22%	4.83%
Acquired Fund Fees and Expenses		0.05%	0.05%	0.05%	0.05%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	[1]	3.00%	3.74%	3.07%	5.68%
Fee Waiver and/or Expense Reimbursement	[2]	(1.48%)	(1.47%)	(1.80%)	(4.67%)
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	[1][2]	1.52%	2.27%	1.27%	1.01%

EXPENSE EXAMPLE

The example is intended to help you compare the cost of investing in the Fund to 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 Munder International Fund - Core Equity (USD $)	Class A	Class C	Class Y	Class I
1 Year	696	330	129	103
3 Years	1,154	864	597	822
5 Years	1,786	1,673	1,284	2,034
10 Years	3,479	3,788	3,119	4,992

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

Expense Example No Redemption Munder International Fund - Core Equity (USD $)	Class A	Class C	Class Y	Class I
1 Year	696	230	129	103
3 Years	1,154	864	597	822
5 Years	1,786	1,673	1,284	2,034
10 Years	3,479	3,788	3,119	4,992

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

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 rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 108% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term growth of capital in the Fund by investing primarily in securities of companies in countries represented in the MSCI ACWI ex USA Index, but may also invest in companies from other countries.

Under normal circumstances, at least 80% of the Fund’s assets will be invested in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants). This investment strategy may not be changed without 60 days’ prior notice to shareholders. For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.

The advisor employs a bottom-up investment approach that emphasizes individual stock selection.  The advisor’s investment process uses a combination of quantitative and traditional qualitative, fundamental analysis to identify attractive stocks with low relative price multiples and positive trends in earnings forecasts.  The stock selection process is designed to produce a diversified portfolio that, relative to the MSCI ACWI ex USA Index, tends to have a below-average price-to-earnings ratio and an above-average earnings growth trend.

Fund investment allocation to countries and sectors tends to closely approximate the country and sector allocations of the MSCI ACWI ex USA Index, which concentrates its exposure in one or more countries, regions or sectors. The Fund will, however, be invested in a minimum of ten countries.

There is no limit on the market capitalization in which the Fund may invest; therefore, the Fund’s investments may include small-, mid- and large-capitalization companies.

From time to time, the advisor may use futures contracts and/or exchange-traded funds (ETFs) to manage cash.

PRINCIPAL INVESTMENT RISKS

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the equity markets of foreign developed and emerging markets countries.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities.  Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates.  In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded.

Emerging Markets Investing Risk

There are greater risks involved in investing in emerging market countries than those associated with investment in developed foreign markets. The risks of investing in foreign securities generally are amplified for investments in emerging markets securities.  Generally, markets in emerging market countries are less diverse and mature than those of developed countries and their political systems are less stable. Further, due to the smaller securities markets, lower trading volumes and less government regulation of securities markets in emerging market countries compared to those in developed countries, investments in emerging market securities generally are more illiquid and volatile and subject to a higher risk of settlement disruptions than investments in developed countries. Consequently, emerging market securities may be subject to relatively more abrupt and severe price declines.

Growth Investing Risk

The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks. The prices of growth stocks also may fall or fail to appreciate as anticipated by the advisor, regardless of movements in the securities markets.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices, in their view, that are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Geographic Focus Risk

The Fund may invest a substantial portion of its assets within one or more countries or geographic regions. When the Fund focuses its investments in a country or countries, it is particularly susceptible to the impact of market, economic, political, regulatory and other factors affecting those countries.  Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a country or countries.

Derivatives Risk

Derivatives, such as futures contracts, are subject to the risk that small price movements can result in substantial gains or losses. Derivatives also entail exposure to the credit risk of the derivative’s counterparty, the risk of mispricing or improper valuation, and the risk that changes in value of the derivative may not correlate perfectly with the relevant securities, assets, rates or indices. The Fund “covers” its exposure to certain derivative contracts by segregating or designating liquid assets on its records sufficient to satisfy current payment obligations, which may expose the Fund to the market through both the underlying assets subject to the contract and the assets used as cover.  The use of derivatives may cause the Fund to incur losses greater than those that would have occurred had derivatives not been used.

Smaller Company Stock Risk

Smaller or medium-sized companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of small or medium-sized companies tend to be more volatile than those of larger companies and small or medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since smaller company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

PERFORMANCE

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance from year to year and by showing the Fund’s average annual total returns for different calendar periods over the life of the Fund compared to those of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s Class Y shares, its least expensive class offered to a broad array of investors. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ. 

TOTAL RETURN (%) per calendar year

YTD through 9/30/13:	12.23%
Best Quarter:	21.92%	(quarter ended 6/30/09)
Worst Quarter:	-23.95%	(quarter ended 9/30/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Average Annual Returns Munder International Fund - Core Equity	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Class Y	23.08%	(6.28%)	(4.76%)	Aug. 16, 2007
Class A	16.01%	(7.56%)	(5.97%)	Aug. 16, 2007
Class C	20.90%	(7.25%)	(5.74%)	Aug. 16, 2007
Class I	23.46%	(6.06%)	(4.54%)	Aug. 16, 2007
After Taxes on Distributions Class Y	22.01%	(6.66%)	(5.12%)
After Taxes on Distributions and Sale of Fund Shares Class Y	17.79%	(4.99%)	(3.75%)
MSCI ACWI ex USA Index (Net Dividends) Class Y Comparison (reflects no deductions for fees, expenses or taxes)	16.83%	(2.89%)	(0.16%)	Aug. 16, 2007
MSCI ACWI ex USA Index (Net Dividends) Class A Comparison (reflects no deductions for fees, expenses or taxes)	16.83%	(2.89%)	(0.16%)	Aug. 16, 2007
MSCI ACWI ex USA Index (Net Dividends) Class C Comparison (reflects no deductions for fees, expenses or taxes)	16.83%	(2.89%)	(0.16%)	Aug. 16, 2007
MSCI ACWI ex USA Index (Net Dividends) Class I Comparison (reflects no deductions for fees, expenses or taxes)	16.83%	(2.89%)	(0.16%)	Aug. 16, 2007

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. If there is a capital loss at the end of the period, the return after taxes on the distributions and sale of Fund shares may exceed the return before taxes due to the tax benefit of realizing a capital loss upon the sale of Fund shares, which is factored into the result. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A, C and I shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] A deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class C shares within one year of purchase.

[1] Total Annual Fund Operating Expenses above differ from the amounts shown in the Fund's Financial Highlights for its most recent fiscal year, which reflect only the operating expenses of the Fund and do not include Acquired Fund Fees and Expenses (i.e., fees and expenses of other funds in which the Fund invested).

[2] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2015 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.47% for Class A shares, 2.22% for Class C shares, 1.22% for Class Y shares and 0.96% for Class I shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Munder Integrity Mid-Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund’s investment objective is to seek to achieve capital appreciation.

Expense [Heading]

rr_ExpenseHeading

FEES & EXPENSES OF THE FUND

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

The table below 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 $25,000 in the Munder Funds.  More information about these and other discounts is available from your financial professional and in the section entitled “Applicable Sales Charges” on page 9 of the Fund’s Prospectus and the section entitled “Additional Purchase, Redemption, Exchange and Conversion Information” on page 56 of the Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-10-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 82% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

82.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the Munder Funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

EXPENSE EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example is intended to help you compare the cost of investing in the Fund to 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

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

Expense Example Closing [Text Block]

rr_ExpenseExampleClosingTextBlock

The example does not reflect sales charges (loads) on reinvested dividends and other distributions because sales charges (loads) are not imposed by the Fund on reinvested dividends and other distributions.

Strategy [Heading]

rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The sub-advisor pursues capital appreciation in the Fund by investing, under normal circumstances, at least 80% of the Fund’s assets in equity securities (i.e., common stocks, preferred stocks, convertible securities and rights and warrants) of mid-capitalization companies.  This investment strategy may not be changed without 60 days’ prior notice to shareholders.  For purposes of this investment strategy, assets of the Fund means net assets plus the amount of any borrowings for investment purposes.  Mid-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell Midcap® Index ($888 million to $27.5 billion as of September 30, 2013).  The Fund may, however, also invest (i) in equity securities of smaller or larger companies and (ii) up to 25% of its assets in foreign securities.

When selecting securities to invest in, the sub-advisor seeks out companies that appear to be undervalued according to certain financial measurements of their intrinsic net worth or business prospects.  The sub-advisor chooses the Fund’s investments by employing a value-oriented approach that focuses on securities that offer value with improving sentiment.  The sub-advisor finds these value-oriented investments by, among other things: (i) rigorously analyzing the company’s financial characteristics and assessing the quality of the company’s management; (ii) considering comparative price-to-book, price-to-sales and price-to-cash flow ratios; and (iii) analyzing cash flows to identify stocks with the most attractive potential returns.

The sub-advisor regularly reviews the Fund’s investments and will sell securities when the sub-advisor believes the securities are no longer attractive because (i) of price appreciation, (ii) of a significant change in the fundamental outlook of the company or (iii) other investments available are considered to be more attractive.

From time to time, the Fund may focus its investments in companies in one or more economic sectors. Economic sectors include multiple different industries. The Fund will not invest 25% or more of its assets in any one industry.

From time to time, the sub-advisor may use exchange-traded funds (ETFs) to manage cash.

Risk [Heading]

rr_RiskHeading

PRINCIPAL INVESTMENT RISKS

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You may lose money if you invest in the Fund.  An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.  The principal risks associated with investment in the Fund are as follows:

Stock Market Risk

The value of the equity securities in which the Fund invests may decline in response to developments affecting individual companies and/or general economic conditions. Price changes may be temporary or last for extended periods. For example, stock prices have historically fluctuated in periodic cycles.

Stock Selection Risk

In addition to, or in spite of, the impact of movements in the overall stock market, the value of the Fund’s investments may decline if the particular companies in which the Fund invests do not perform well in the market. The sub-advisor’s investment strategy seeks to control risk by adhering to portfolio constraints relative to the Fund’s benchmark. As a result, the Fund may be particularly susceptible to a general decline in the mid-capitalization value sector of the U.S. stock market.

Value Investing Risk

Value investing attempts to identify strong companies selling at a discount from their perceived true worth. Advisors using this approach generally select stocks at prices that, in their view, are temporarily low relative to the company’s earnings, assets, cash flow and dividends. Value investing is subject to the risk that a stock’s intrinsic value may never be fully recognized or realized by the market, or its price may go down. In addition, there is the risk that a stock judged to be undervalued may actually be appropriately priced.

Medium-Sized Company Stock Risk

Medium-sized (or mid-capitalization) companies often have more limited managerial and financial resources than larger, more established companies and, therefore, may be more susceptible to market downturns or changing economic conditions.  Prices of medium-sized companies tend to be more volatile than those of larger companies and medium-sized issuers may be subject to greater degrees of changes in their earnings and prospects.  Since medium-sized company stocks typically have narrower markets and are traded in lower volumes than larger company stocks, they are often more difficult to sell.

Foreign Securities Risk

Foreign securities, particularly those from emerging market countries, tend to be more volatile and less liquid than U.S. securities. Further, foreign securities may be subject to additional risks not associated with investment in U.S. securities due to differences in the economic and political environment, the amount of available public information, the degree of market regulation, and financial reporting, accounting and auditing standards, and, in the case of foreign currency-denominated securities, fluctuations in currency exchange rates. In addition, during periods of social, political or economic instability in a country or region, the value of a foreign security could be affected by, among other things, increasing price volatility, illiquidity or the closure of the primary market on which the security is traded. In addition to foreign securities, the Fund may be exposed to foreign markets as a result of the Fund’s investments in U.S. companies that have international exposure.

Sector Focus Risk

The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, but will not invest 25% or more of its assets in any one industry. To the extent the Fund focuses in one or more sectors, market or economic factors impacting those sectors could have a significant effect on the value of the Fund’s investments. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are focused in a particular sector or industry. Since benchmark sector weights influence the Fund’s sector exposure, the Fund may tend to be more heavily weighted in companies in the financials sector, particularly those within the real estate investment trust (REIT) industry. The values of companies in the financials sector are particularly vulnerable to economic downturns and changes in government regulation and interest rates. Investing in REITs involves many of the risks of investing directly in real estate such as declining real estate values, changing economic conditions and increasing interest rates. Investments in securities of REITs entails additional risks because REITs depend on specialized management skills, may invest in a limited number of properties and may concentrate in a particular region or property type.

ETF Risk

ETFs are investment companies that are bought and sold on a securities exchange. The risks of owning an ETF are generally comparable to the risks of owning the underlying securities held by the ETF. However, when the Fund invests in an ETF, it will bear additional expenses based on its pro rata share of the ETF’s operating expenses. In addition, because of these expenses, compared to owning the underlying securities directly, it may be more costly to own an ETF. Lack of liquidity in an ETF could result in an ETF being more volatile than the underlying portfolio of securities.

Risk Lose Money [Text]

rr_RiskLoseMoney

You may lose money if you invest in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund’s performance compared to that of a broad-based securities market index. When you consider this information, please remember the Fund’s performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information on our website, www.munder.com, or by calling (800) 468-6337.

The annual return in the bar chart is for the Fund’s least expensive class of shares, Class Y shares. Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table below provide some indication of the risk of an investment in the Fund by showing the Fund's performance compared to that of a broad-based securities market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) 468-6337

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.munder.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

When you consider this information, please remember the Fund's performance in past years (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

TOTAL RETURN (%) per calendar year

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

YTD through 9/30/13:	25.30%
Best Quarter:	12.01%	(quarter ended 3/31/12)
Worst Quarter:	-5.02%	(quarter ended 6/30/12)

Year to Date Return, Label

rr_YearToDateReturnLabel

YTD through

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

25.30%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.01%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.02%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deductions for fees, expenses or taxes)

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for the Class Y shares. The after-tax returns of the Class A shares will vary from those shown for the Class Y shares because, as noted above, each class of shares has different sales charges, distribution fees and/or service fees, and expenses.

Caption

rr_AverageAnnualReturnCaption

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2012 (including maximum sales charges)

Russell Midcap® Value Index Class Y Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.51%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.26%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Russell Midcap® Value Index Class A Comparison (reflects no deductions for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

18.51%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.26%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

^[2]

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

8.29%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

9.29%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(7.79%)

^[3]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.50%

^[3]

Expenses Deferred Charges [Text Block]

rr_ExpensesDeferredChargesTextBlock

A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

694

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,434

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

4,028

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

7,451

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

694

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

2,434

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

4,028

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

7,451

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

10.05%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

1.21%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class Y

Risk/Return:

rr_RiskReturnAbstract

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 original purchase price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOther

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

8.93%

Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements

rr_ExpensesOverAssets

9.68%

Fee Waivers and/or Expense Reimbursements

rr_FeeWaiverOrReimbursementOverAssets

(8.43%)

^[3]

Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements

rr_NetExpensesOverAssets

1.25%

^[3]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

2,043

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

3,783

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

7,471

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

127

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

2,043

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

3,783

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 7,471

Annual Return 2012

rr_AnnualReturn2012

16.78%

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.78%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.34%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2011

Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

16.71%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.28%

Class Y | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

10.99%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.55%

[1] The sales charge declines as the amount invested increases.

[2] A 1.00% deferred sales charge, also known as a contingent deferred sales charge (CDSC), applies to redemptions of Class A shares within one year of purchase if purchased with no initial sales charge as part of an investment of $1 million or more and if your broker or financial intermediary received a sales commission on the purchase.

[3] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2014 to waive or limit fees or to assume other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses (other than taxes, interest, litigation, dividends and interest expense on securities sold short, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and Acquired Fund Fees and Expenses (as interpreted by the Securities and Exchange Commission from time to time)) do not exceed 1.50% for Class A shares and 1.25% for Class Y shares. There is no guarantee that the Expense Limitation Agreement will be extended after its expiration or at the currently specified level. In addition, the Fund and MCM have entered into a Reimbursement Agreement pursuant to which the Fund (at a later date) may reimburse MCM for the fees it waived or limited and other expenses assumed and paid by MCM pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to MCM does not cause Total Net Annual Operating Expenses (other than those excluded for purposes of the Expense Limitation Agreement) of the Fund to exceed the limits stated above and the Board of Trustees has approved in advance such reimbursement to MCM.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	Oct. 29, 2013

XML

Document and Entity Information	0 Months Ended
	Jun. 30, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Jun. 30, 2013
Registrant Name	MUNDER SERIES TRUST
Central Index Key	0001214511
Amendment Flag	false
Document Creation Date	Oct. 28, 2013
Document Effective Date	Oct. 29, 2013
Prospectus Date	Oct. 29, 2013
Munder Bond Fund | Class Y
Risk/Return:
Trading Symbol	MUCYX
Munder Bond Fund | Class K
Risk/Return:
Trading Symbol	MUCKX
Munder Bond Fund | Class A
Risk/Return:
Trading Symbol	MUCAX
Munder Bond Fund | Class B
Risk/Return:
Trading Symbol	MUCBX
Munder Bond Fund | Class C
Risk/Return:
Trading Symbol	MUCCX
Munder Growth Opportunities Fund | Class Y
Risk/Return:
Trading Symbol	MNNYX
Munder Growth Opportunities Fund | Class A
Risk/Return:
Trading Symbol	MNNAX
Munder Growth Opportunities Fund | Class B
Risk/Return:
Trading Symbol	MNNBX
Munder Growth Opportunities Fund | Class C
Risk/Return:
Trading Symbol	MNNCX
Munder Growth Opportunities Fund | Class R
Risk/Return:
Trading Symbol	MNNRX
Munder Index 500 Fund | Class Y
Risk/Return:
Trading Symbol	MUXYX
Munder Index 500 Fund | Class K
Risk/Return:
Trading Symbol	MUXKX
Munder Index 500 Fund | Class A
Risk/Return:
Trading Symbol	MUXAX
Munder Index 500 Fund | Class B
Risk/Return:
Trading Symbol	MUXBX
Munder Index 500 Fund | Class R
Risk/Return:
Trading Symbol	MUXRX
Munder Integrity Mid-Cap Value Fund | Class A
Risk/Return:
Trading Symbol	MAIMX
Munder Integrity Mid-Cap Value Fund | Class Y
Risk/Return:
Trading Symbol	MYIMX
Munder Integrity Small/Mid-Cap Value Fund | Class A
Risk/Return:
Trading Symbol	MAISX
Munder Integrity Small/Mid-Cap Value Fund | Class Y
Risk/Return:
Trading Symbol	MYISX
Munder International Fund - Core Equity | Class A
Risk/Return:
Trading Symbol	MAICX
Munder International Fund - Core Equity | Class C
Risk/Return:
Trading Symbol	MICCX
Munder International Fund - Core Equity | Class Y
Risk/Return:
Trading Symbol	MICYX
Munder International Fund - Core Equity | Class I
Risk/Return:
Trading Symbol	MICIX
Munder International Small-Cap Fund | Class A
Risk/Return:
Trading Symbol	MISAX
Munder International Small-Cap Fund | Class C
Risk/Return:
Trading Symbol	MCISX
Munder International Small-Cap Fund | Class Y
Risk/Return:
Trading Symbol	MYSIX
Munder International Small-Cap Fund | Class I
Risk/Return:
Trading Symbol	MISIX
Munder International Small-Cap Fund | Class R6
Risk/Return:
Trading Symbol	MSSIX
Munder Emerging Markets Small-Cap Fund | Class A Shares
Risk/Return:
Trading Symbol	MAEMX
Munder Emerging Markets Small-Cap Fund | Class Y Shares
Risk/Return:
Trading Symbol	MYEMX
Munder Micro-Cap Equity Fund | Class Y
Risk/Return:
Trading Symbol	MMEYX
Munder Micro-Cap Equity Fund | Class K
Risk/Return:
Trading Symbol	MMEKX
Munder Micro-Cap Equity Fund | Class A
Risk/Return:
Trading Symbol	MMEAX
Munder Micro-Cap Equity Fund | Class B
Risk/Return:
Trading Symbol	MMEBX
Munder Micro-Cap Equity Fund | Class C
Risk/Return:
Trading Symbol	MMECX
Munder Micro-Cap Equity Fund | Class R
Risk/Return:
Trading Symbol	MMERX
Munder Mid-Cap Core Growth Fund | Class Y
Risk/Return:
Trading Symbol	MGOYX
Munder Mid-Cap Core Growth Fund | Class K
Risk/Return:
Trading Symbol	MGOKX
Munder Mid-Cap Core Growth Fund | Class A
Risk/Return:
Trading Symbol	MGOAX
Munder Mid-Cap Core Growth Fund | Class B
Risk/Return:
Trading Symbol	MGROX
Munder Mid-Cap Core Growth Fund | Class C
Risk/Return:
Trading Symbol	MGOTX
Munder Mid-Cap Core Growth Fund | Class R
Risk/Return:
Trading Symbol	MMSRX
Munder Mid-Cap Core Growth Fund | Class R6
Risk/Return:
Trading Symbol	MGOSX
Munder Veracity Small-Cap Value Fund | Class Y
Risk/Return:
Trading Symbol	VSVIX
Munder Veracity Small-Cap Value Fund | Class K
Risk/Return:
Trading Symbol	MKVSX
Munder Veracity Small-Cap Value Fund | Class A
Risk/Return:
Trading Symbol	VSCVX
Munder Veracity Small-Cap Value Fund | Class B
Risk/Return:
Trading Symbol	MBVSX
Munder Veracity Small-Cap Value Fund | Class C
Risk/Return:
Trading Symbol	MCVSX
Munder Veracity Small-Cap Value Fund | Class R
Risk/Return:
Trading Symbol	MRVSX
Munder Veracity Small-Cap Value Fund | Class R6
Risk/Return:
Trading Symbol	MVSSX