485BPOS

As filed with the Securities and Exchange Commission on November 9, 2012

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. 47	x

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 48	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. 47 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. 47 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 9th day of November 2012.

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 9, 2012
Joseph E. Champagne
*/s/ Thomas D. Eckert	Trustee	November 9, 2012
Thomas D. Eckert
*/s/ John Engler	Trustee	November 9, 2012
John Engler
*/s/ Michael T. Monahan	Trustee	November 9, 2012
Michael T. Monahan
*/s/ Arthur T. Porter	Trustee	November 9, 2012
Arthur T. Porter
*/s/ John Rakolta, Jr.	Trustee	November 9, 2012
John Rakolta, Jr.
*/s/ Lisa A. Payne	Trustee	November 9, 2012
Lisa A. Payne
/s/James V. FitzGerald	President	November 9, 2012
James V. FitzGerald	(Principal Executive Officer)
/s/ Peter K. Hoglund	Vice President	November 9, 2012
Peter K. Hoglund	(Principal Financial Officer)
/s/ David W. Rumph	Treasurer	November 9, 2012
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

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Munder International Small-Cap Fund (Prospectus Summary) | 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder International Small-Cap Fund	Class A Shares		Class C Shares		Class R6 Shares	Class Y Shares	Class I Shares
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 Shares	Class C Shares	Class R6 Shares		Class Y Shares	Class I Shares
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%	0.73%	0.30%	[1]	0.68%	0.32%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements		1.87%	2.68%	1.25%	[1]	1.63%	1.27%
Fee Waiver and/or Expense Reimbursement	[2]	(0.16%)	(0.22%)	none		(0.17%)	(0.07%)
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	[2]	1.71%	2.46%	1.25%		1.46%	1.20%

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 Shares	Class C Shares	Class R6 Shares	Class Y Shares	Class I Shares
Expense Example, with Redemption, 1 Year	714	349	127	149	122
Expense Example, with Redemption, 3 Years	1,091	812	397	498	396
Expense Example, with Redemption, 5 Years	1,491	1,400	686	871	690
Expense Example, with Redemption, 10 Years	2,608	2,996	1,511	1,919	1,528

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 Shares	Class C Shares	Class R6 Shares	Class Y Shares	Class I Shares
Expense Example, No Redemption, 1 Year	714	249	127	149	122
Expense Example, No Redemption, 3 Years	1,091	812	397	498	396
Expense Example, No Redemption, 5 Years	1,491	1,400	686	871	690
Expense Example, No Redemption, 10 Years	2,608	2,996	1,511	1,919	1,528

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 67%
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 bottom
15% (based on market capitalization) of companies from 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
dollar value traded 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 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.
  
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 9/30/12:  17.36%                          
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder International Small-Cap Fund	Label	1 Year	Since Inception	Inception Date
Class A Shares	CLASS A Return Before Taxes	(16.85%)	(8.87%)	Aug. 17, 2007
Class C Shares	CLASS C Return Before Taxes	(13.47%)	(8.41%)	Aug. 17, 2007
Class Y Shares	CLASS Y Return Before Taxes	(11.81%)	(7.51%)	Aug. 17, 2007
Class I Shares	CLASS I Return Before Taxes	(11.55%)	(7.24%)	Aug. 17, 2007
After Taxes on Distributions Class Y Shares	CLASS Y Return After Taxes on Distributions	(11.84%)	(7.53%)	Aug. 17, 2007
After Taxes on Distributions and Sales Class Y Shares	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(7.21%)	(6.11%)	Aug. 17, 2007
S&P® Developed ex-U.S. SmallCap Index	S&P® Developed ex-U.S. SmallCap Index (reflects no deductions for fees, expenses or taxes)	(14.49%)	(3.92%)

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 as that class had
not commenced operation as of December 31, 2011.

[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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

[2] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2013 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 1.71% for Class A shares, 2.46% for Class C shares, 1.46% for Class R6 shares, 1.46% for Class Y shares and 1.20% 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 Micro-Cap Equity Fund (Prospectus Summary) | 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 58 of the Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Micro-Cap Equity Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class R Shares	Class Y Shares
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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares		Class Y Shares
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		0.79%	0.80%	0.79%	1.03%	0.80%		0.79%
Acquired Fund Fees and Expenses		0.20%	0.20%	0.20%	0.20%	0.20%		0.20%
Total Annual Fund Operating Expenses	[2]	2.24%	3.00%	2.99%	2.23%	2.50%		1.99%

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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	765	803	402	226	253	202
Expense Example, with Redemption, 3 Years	1,212	1,227	924	697	779	624
Expense Example, with Redemption, 5 Years	1,684	1,777	1,572	1,195	1,331	1,073
Expense Example, with Redemption, 10 Years	2,983	3,140	3,308	2,565	2,836	2,317

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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	765	303	302	226	253	202
Expense Example, No Redemption, 3 Years	1,212	927	924	697	779	624
Expense Example, No Redemption, 5 Years	1,684	1,577	1,572	1,195	1,331	1,073
Expense Example, No Redemption, 10 Years	2,983	3,140	3,308	2,565	2,836	2,317

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 56%
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 $1.8 billion as of September 28,
2012). 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:
  
  o a high level of profitability;

  o solid management;

  o a strong, competitive market position; or

  o 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 9/30/12:    20.59%                           
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Micro-Cap Equity Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	(6.82%)	(4.33%)	4.10%	10.15%	Dec. 26, 1996
Class B Shares	CLASS B Return Before Taxes	(7.04%)	(4.24%)	4.07%	9.54%	Feb. 24, 1997
Class C Shares	CLASS C Return Before Taxes	(3.13%)	(3.96%)	3.91%	9.83%	Mar. 31, 1997
Class K Shares	CLASS K Return Before Taxes	(1.41%)	(3.23%)	4.70%	10.49%	Dec. 31, 1996
Class R Shares	CLASS R Return Before Taxes	(1.66%)	(3.48%)		2.44%	Jul. 29, 2004
Class Y Shares	CLASS Y Return Before Taxes	(1.17%)	(2.99%)	4.95%	10.83%	Dec. 26, 1996
After Taxes on Distributions Class Y Shares	CLASS Y Return After Taxes on Distributions	(1.17%)	(3.81%)	4.38%	10.18%	Dec. 26, 1996
After Taxes on Distributions and Sales Class Y Shares	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(0.76%)	(2.59%)	4.29%	9.67%	Dec. 26, 1996
Russell Microcap® Index	Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) (reflects no deductions for fees, expenses or taxes)	(9.27%)	(3.75%)	4.63%	7.20%		7.10%	7.48%	2.18%

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. 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, 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 (Prospectus Summary) | 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Mid-Cap Core Growth Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares		Class R6 Shares		Class Y Shares
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		0.32%	0.32%	0.32%	0.57%	0.31%		0.09%	[2]	0.31%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%		0.01%		0.01%
Total Annual Fund Operating Expenses	[3]	1.33%	2.08%	2.08%	1.33%	1.57%		0.85%	[2]	1.07%

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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	678	711	311	135	160	87	109
Expense Example, with Redemption, 3 Years	948	952	652	421	496	271	340
Expense Example, with Redemption, 5 Years	1,239	1,319	1,119	729	855	471	590
Expense Example, with Redemption, 10 Years	2,063	2,219	2,410	1,601	1,867	1,049	1,306

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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	678	211	211	135	160	87	109
Expense Example, No Redemption, 3 Years	948	652	652	421	496	271	340
Expense Example, No Redemption, 5 Years	1,239	1,119	1,119	729	855	471	590
Expense Example, No Redemption, 10 Years	2,063	2,219	2,410	1,601	1,867	1,049	1,306

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 48%
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 ($237 million to $14.7 billion as of
September 28, 2012) or within the range of companies included in the Russell
Midcap® Index ($251 million to $22.1 billion as of September 28, 2012).
  
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 9/30/12:    13.46%                           
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Mid-Cap Core Growth Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	(6.47%)	1.09%	6.49%	5.79%	Jul. 03, 2000
Class B Shares	CLASS B Return Before Taxes	(6.68%)	1.09%	6.45%	5.79%	Jul. 05, 2000
Class C Shares	CLASS C Return Before Taxes	(2.75%)	1.47%	6.18%	4.94%	Jul. 14, 2000
Class K Shares	CLASS K Return Before Taxes	(1.04%)	2.23%		9.56%	Dec. 17, 2002
Class R Shares	CLASS R Return Before Taxes	(1.27%)	1.98%		6.54%	Jul. 29, 2004
Class Y Shares	CLASS Y Return Before Taxes	(0.77%)	2.49%	7.35%	9.22%	Jun. 24, 1998
Class Y Shares After Taxes on Distributions	CLASS Y Return After Taxes on Distributions	(0.77%)	2.43%	7.30%	8.80%	Jun. 24, 1998
Class Y Shares After Taxes on Distributions and Sales	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(0.50%)	2.13%	6.50%	8.01%	Jun. 24, 1998
Russell Midcap® Index	Russell Midcap® Index (reflects no deductions for fees, expenses or taxes)	(1.55%)	1.41%	6.99%	6.69%		5.79%	9.94%	6.91%
Russell Midcap® Growth Index	Russell Midcap® Growth Index (reflects no deductions for fees, expenses or taxes)	(1.65%)	2.44%	5.29%	4.79%		0.44%	9.73%	6.84%

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. 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, 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 as that class had not commenced
operation as December 31, 2011.

[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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. 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).

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Munder International Fund - Core Equity (Prospectus Summary) | 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 9 of the Fund's Prospectus and the section entitled "Additional
Purchase, Redemption, Exchange and Conversion Information" on page 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder International Fund - Core Equity	Class A Shares		Class C Shares		Class Y Shares	Class I Shares
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 Shares	Class C Shares	Class Y Shares	Class I Shares
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		4.73%	4.77%	4.73%	2.89%
Acquired Fund Fees and Expenses	[1]	0.01%	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements		5.79%	6.58%	5.54%	3.70%
Fee Waiver and/or Expense Reimbursement	[2]	(4.31%)	(4.35%)	(4.31%)	(2.73%)
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	[1][2]	1.48%	2.23%	1.23%	0.97%

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 Shares	Class C Shares	Class Y Shares	Class I Shares
Expense Example, with Redemption, 1 Year	692	326	125	99
Expense Example, with Redemption, 3 Years	1,816	1,557	1,269	879
Expense Example, with Redemption, 5 Years	2,922	2,847	2,400	1,679
Expense Example, with Redemption, 10 Years	5,612	5,896	5,175	3,773

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 Shares	Class C Shares	Class Y Shares	Class I Shares
Expense Example, No Redemption, 1 Year	692	226	125	99
Expense Example, No Redemption, 3 Years	1,816	1,557	1,269	879
Expense Example, No Redemption, 5 Years	2,922	2,847	2,400	1,679
Expense Example, No Redemption, 10 Years	5,612	5,896	5,175	3,773

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 84%
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. Generally,
structures in emerging market countries are less diverse and mature than those
of developed countries and their political systems are less stable; therefore,
the risks of investing in foreign securities in general tend to be amplified for
investment in emerging markets. Further, due to the small securities markets and
low trading volumes in emerging market countries, investments may be more
illiquid and volatile than investments in developed countries and therefore
subject to 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 9/30/12: 13.48%                         
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder International Fund - Core Equity	Label	1 Year	Since Inception	Inception Date
Class A Shares	CLASS A Return Before Taxes	(20.45%)	(11.52%)	Aug. 16, 2007
Class C Shares	CLASS C Return Before Taxes	(17.34%)	(11.11%)	Aug. 16, 2007
Class Y Shares	CLASS Y Return Before Taxes	(15.67%)	(10.18%)	Aug. 16, 2007
Class I Shares	CLASS I Return Before Taxes	(15.61%)	(9.98%)	Aug. 16, 2007
After Taxes on Distributions Class Y Shares	CLASS Y Return After Taxes on Distributions	(16.36%)	(10.42%)	Aug. 16, 2007
After Taxes on Distributions and Sales Class Y Shares	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(9.07%)	(8.14%)	Aug. 16, 2007
MSCI ACWI ex USA Index (Net Dividends)	MSCI ACWI ex USA Index (Net Dividends) (reflects no deductions for fees, expenses or taxes)	(13.71%)	(3.96%)

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, 2013 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.

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Munder Veracity Small-Cap Value Fund (Prospectus Summary) | 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 58 of the Statement of
Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Veracity Small-Cap Value Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares		Class R6 Shares		Class Y Shares
Management Fees		0.90%	0.90%	0.90%	0.90%	0.90%		0.90%		0.90%
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	0.50%	[1]	none		none
Other Expenses		0.48%	0.48%	0.49%	0.73%	0.49%		0.20%	[2]	0.49%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	[2]	1.63%	2.38%	2.39%	1.63%	1.89%		1.10%		1.39%
Fee Waivers and/or Expense Reimbursements	[3]	(0.13%)	(0.13%)	(0.14%)	(0.13%)	(0.14%)		none		(0.14%)
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	[3]	1.50%	2.25%	2.25%	1.50%	1.75%		1.10%		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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	694	728	328	153	178	112	127
Expense Example, with Redemption, 3 Years	1,024	1,030	732	502	580	350	426
Expense Example, with Redemption, 5 Years	1,376	1,459	1,263	874	1,008	606	747
Expense Example, with Redemption, 10 Years	2,366	2,520	2,716	1,922	2,200	1,340	1,656

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 Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class R6 Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	694	228	228	153	178	112	127
Expense Example, No Redemption, 3 Years	1,024	730	732	502	580	350	426
Expense Example, No Redemption, 5 Years	1,376	1,259	1,263	874	1,008	606	747
Expense Example, No Redemption, 10 Years	2,366	2,520	2,716	1,922	2,200	1,340	1,656

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 51%
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 ($30 million to $4.5 billion as of September 28, 2012).
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. Therefore, the total returns for Class A shares,
the class of shares with the longest performance history, in the bar chart below
for the periods prior to May 14, 2011 are those of the Veracity Fund's Class R
shares, which have not been restated to reflect any difference in expenses and
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 be different.
  
The performance for Class A 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 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 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.

TOTAL RETURN (%) per calendar year

YTD through 9/30/12:   8.85%                         
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, 2011 (including maximum sales charges in existence during the periods indicated)

Average Annual Total Returns Munder Veracity Small-Cap Value Fund	Label	1 Year	5 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary
Class A Shares	CLASS A Return Before Taxes	(2.91%)	1.40%	6.01%	Mar. 30, 2004
Class B Shares	CLASS B Return Before Taxes	(8.41%)	0.27%	3.76%	Jul. 07, 2005
Class C Shares	CLASS C Return Before Taxes	(4.55%)	0.66%	3.91%	Jul. 07, 2005
Class K Shares	CLASS K Return Before Taxes	(2.85%)	1.42%	4.67%	Jul. 07, 2005
Class R Shares	CLASS R Return Before Taxes	(3.09%)	1.17%	4.42%	Jul. 07, 2005
Class Y Shares	CLASS Y Return Before Taxes	(2.60%)	1.67%	4.93%	Jul. 07, 2005
After Taxes on Distributions Class A Shares	CLASS A Return After Taxes on Distributions	(2.91%)	1.11%	5.64%	Mar. 30, 2004
After Taxes on Distributions and Sales Class A Shares	CLASS A Return After Taxes on Distributions and Sale of Fund Shares	(1.89%)	1.14%	5.17%	Mar. 30, 2004
Russell 2000® Value Index	Russell 2000® Value Index (reflects no deductions for fees, expenses or taxes)	(5.50%)	(1.87%)	3.89%		2.39%

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 as
that class had not commenced operation as of December 31, 2011.

[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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. 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, 2013 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 MST has approved in advance such reimbursement to MCM.

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Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund
Risk Return [Abstract]	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 58 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 56% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	56.00%
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 $1.8 billion as of September 28, 2012). 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:      o a high level of profitability;   o solid management;   o a strong, competitive market position; or   o 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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:    20.59%                            Best Quarter:    29.30% (quarter ended 6/30/09)    Worst Quarter:  -26.53% (quarter ended 12/31/08)
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, 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 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 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. 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, 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, 2011 (including maximum sales charges)
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Russell Microcap® Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell Microcap® Index (Wilshire US Micro-Cap Index for periods prior to 7/1/00) (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(9.27%)
5 Years	rr_AverageAnnualReturnYear05	(3.75%)
10 Years	rr_AverageAnnualReturnYear10	4.63%
Since Inception	rr_AverageAnnualReturnSinceInception	7.20%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	7.10%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	7.48%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	2.18%
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.79%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.24%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	765
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,212
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,684
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,983
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	765
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,212
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,684
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,983
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(6.82%)
5 Years	rr_AverageAnnualReturnYear05	(4.33%)
10 Years	rr_AverageAnnualReturnYear10	4.10%
Since Inception	rr_AverageAnnualReturnSinceInception	10.15%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 26, 1996
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	5.00%	[4]
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.80%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	3.00%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	803
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,227
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,777
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,140
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	303
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	927
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,577
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,140
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(7.04%)
5 Years	rr_AverageAnnualReturnYear05	(4.24%)
10 Years	rr_AverageAnnualReturnYear10	4.07%
Since Inception	rr_AverageAnnualReturnSinceInception	9.54%
Inception Date	rr_AverageAnnualReturnInceptionDate	Feb. 24, 1997
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.79%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.99%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	402
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	924
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,572
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,308
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	302
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	924
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,572
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,308
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(3.13%)
5 Years	rr_AverageAnnualReturnYear05	(3.96%)
10 Years	rr_AverageAnnualReturnYear10	3.91%
Since Inception	rr_AverageAnnualReturnSinceInception	9.83%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 31, 1997
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.03%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.23%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	226
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	697
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,195
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,565
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	226
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	697
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,195
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,565
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.41%)
5 Years	rr_AverageAnnualReturnYear05	(3.23%)
10 Years	rr_AverageAnnualReturnYear10	4.70%
Since Inception	rr_AverageAnnualReturnSinceInception	10.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 31, 1996
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[6]
Other Expenses	rr_OtherExpensesOverAssets	0.80%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.50%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	253
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	779
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,331
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,836
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	253
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	779
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,331
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,836
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.66%)
5 Years	rr_AverageAnnualReturnYear05	(3.48%)
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	2.44%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 29, 2004
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	1.00%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.79%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.20%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.99%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	202
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	624
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,073
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,317
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	202
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	624
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,073
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,317
Annual Return 2002	rr_AnnualReturn2002	(21.73%)
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%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	20.59%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.17%)
5 Years	rr_AverageAnnualReturnYear05	(2.99%)
10 Years	rr_AverageAnnualReturnYear10	4.95%
Since Inception	rr_AverageAnnualReturnSinceInception	10.83%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 26, 1996
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(1.17%)
5 Years	rr_AverageAnnualReturnYear05	(3.81%)
10 Years	rr_AverageAnnualReturnYear10	4.38%
Since Inception	rr_AverageAnnualReturnSinceInception	10.18%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 26, 1996
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(0.76%)
5 Years	rr_AverageAnnualReturnYear05	(2.59%)
10 Years	rr_AverageAnnualReturnYear10	4.29%
Since Inception	rr_AverageAnnualReturnSinceInception	9.67%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 26, 1996

[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

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund
Risk Return [Abstract]	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 58 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 3% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	3.00%
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 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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:    15.98%                            Best Quarter:     15.83% (quarter ended 6/30/09)    Worst Quarter:   -22.12% (quarter ended 12/31/08)
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, 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 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 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. 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, 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, 2011 (including maximum sales charges)
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | S&P 500® Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	S&P 500® Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	2.11%
5 Years	rr_AverageAnnualReturnYear05	(0.25%)
10 Years	rr_AverageAnnualReturnYear10	2.92%
Since Inception	rr_AverageAnnualReturnSinceInception	8.36%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	7.85%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	6.81%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	3.92%
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.20%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%	[2]
Other Expenses	rr_OtherExpensesOverAssets	0.45%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.90%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	340
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	530
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	736
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,330
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	340
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	530
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	736
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,330
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.14%)
5 Years	rr_AverageAnnualReturnYear05	(1.32%)
10 Years	rr_AverageAnnualReturnYear10	2.04%
Since Inception	rr_AverageAnnualReturnSinceInception	7.07%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 09, 1992
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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	0.45%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.65%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	468
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	720
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	997
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,754
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	897
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,754
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.59%)
5 Years	rr_AverageAnnualReturnYear05	(1.26%)
10 Years	rr_AverageAnnualReturnYear10	2.07%
Since Inception	rr_AverageAnnualReturnSinceInception	6.03%
Inception Date	rr_AverageAnnualReturnInceptionDate	Oct. 31, 1995
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.20%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.70%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.90%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	92
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	287
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	498
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,108
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	92
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	288
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	498
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,108
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	1.24%
5 Years	rr_AverageAnnualReturnYear05	(0.89%)
10 Years	rr_AverageAnnualReturnYear10	2.25%
Since Inception	rr_AverageAnnualReturnSinceInception	7.15%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 07, 1992
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.20%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[4]
Other Expenses	rr_OtherExpensesOverAssets	0.46%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.16%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	118
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	368
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	638
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,409
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	118
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	368
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	638
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,409
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	1.04%
5 Years	rr_AverageAnnualReturnYear05	(1.14%)
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	3.01%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 29, 2004
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.20%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.45%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.65%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	66
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	208
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	362
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	810
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	66
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	208
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	362
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	810
Annual Return 2002	rr_AnnualReturn2002	(22.50%)
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%
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	15.98%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	1.54%
5 Years	rr_AverageAnnualReturnYear05	(0.64%)
10 Years	rr_AverageAnnualReturnYear10	2.51%
Since Inception	rr_AverageAnnualReturnSinceInception	7.94%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(0.93%)
5 Years	rr_AverageAnnualReturnYear05	(2.13%)
10 Years	rr_AverageAnnualReturnYear10	1.60%
Since Inception	rr_AverageAnnualReturnSinceInception	6.79%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	3.43%
5 Years	rr_AverageAnnualReturnYear05	(0.67%)
10 Years	rr_AverageAnnualReturnYear10	2.05%
Since Inception	rr_AverageAnnualReturnSinceInception	6.69%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991

[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 0.80%, respectively, for Class A shares, and 0.50% and 1.15%, 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 [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Small/Mid-Cap Value Fund
Risk Return [Abstract]	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 8 of the Fund's Prospectus and the section entitled "Additional Purchase, Redemption, Exchange and Conversion Information" on page 58 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 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 ($30 million to $8.4 billion as of September 28, 2012). 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. 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 Fund commenced operations on July 1, 2011. 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 1, 2011. Performance history will be available for the Fund after it has been in operation for a full calendar year.
Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Small/Mid-Cap Value Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	133.79%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	134.94%
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(133.44%)	[3]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.50%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	694
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	10,475	[4]
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	10,475	[4]
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	10,475	[4]
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	694
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	10,475	[4]
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	10,475	[4]
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	10,475	[4]
Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Small/Mid-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	141.61%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	142.51%
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(141.26%)	[3]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.25%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	127
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	10,502	[4]
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	10,502	[4]
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	10,502	[4]
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	127
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	10,502	[4]
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	10,502	[4]
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	10,502	[4]

[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, 2013 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.

[4] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund
Risk Return [Abstract]	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 58 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 67% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	67.00%
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 for Class R6 shares are based on estimated expenses for the current 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 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 bottom 15% (based on market capitalization) of companies from 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 dollar value traded 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 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.    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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:  17.36%                           Best Quarter:      27.25%   (quarter ended 6/30/09) Worst Quarter:    -27.05%   (quarter ended 9/30/08)
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 as that class had not commenced operation as of December 31, 2011.
Caption	rr_AverageAnnualReturnCaption	AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges)
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | S&P® Developed ex-U.S. SmallCap Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	S&P® Developed ex-U.S. SmallCap Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(14.49%)
Since Inception	rr_AverageAnnualReturnSinceInception	(3.92%)
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	1.87%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.16%)	[3]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.71%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	714
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,091
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,491
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,608
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	714
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,091
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,491
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,608
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(16.85%)
Since Inception	rr_AverageAnnualReturnSinceInception	(8.87%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 17, 2007
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[4]
Management Fees	rr_ManagementFeesOverAssets	0.95%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.73%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	2.68%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.22%)	[3]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	2.46%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	349
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	812
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,400
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,996
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	249
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	812
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,400
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,996
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(13.47%)
Since Inception	rr_AverageAnnualReturnSinceInception	(8.41%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 17, 2007
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class R6 Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.95%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.30%	[5]
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	1.25%	[5]
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[3]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.25%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	127
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	397
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	686
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,511
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	127
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	397
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	686
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,511
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.95%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.68%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	1.63%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.17%)	[3]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.46%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	149
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	498
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	871
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,919
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	149
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	498
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	871
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,919
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%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	17.36%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(11.81%)
Since Inception	rr_AverageAnnualReturnSinceInception	(7.51%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 17, 2007
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(11.84%)
Since Inception	rr_AverageAnnualReturnSinceInception	(7.53%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 17, 2007
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(7.21%)
Since Inception	rr_AverageAnnualReturnSinceInception	(6.11%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 17, 2007
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class I Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.95%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.32%
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	1.27%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[3]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.20%	[3]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	122
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	396
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	690
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,528
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	122
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	396
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	690
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,528
Label	rr_AverageAnnualReturnLabel	CLASS I Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(11.55%)
Since Inception	rr_AverageAnnualReturnSinceInception	(7.24%)
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] Pursuant to an Expense Limitation Agreement, MCM has agreed contractually through at least October 31, 2013 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 1.71% for Class A shares, 2.46% for Class C shares, 1.46% for Class R6 shares, 1.46% for Class Y shares and 1.20% 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.

[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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund
Risk Return [Abstract]	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 58 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 362% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	362.00%
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 selects securities based on an analysis of current versus historical interest rate relationships and the relative value of the bond market sectors.    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) to manage cash.    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 to-be-announced (TBA) transaction, a seller agrees to deliver a security at a future date; however, the seller does not specify the particular 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 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. 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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:  6.77%                           Best Quarter:      6.22% (quarter ended 9/30/09)   Worst Quarter:    -3.05% (quarter ended 6/30/04)
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, 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, 2011 (including maximum sales charges)
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Barclays U.S. Aggregate Bond Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	7.84%
5 Years	rr_AverageAnnualReturnYear05	6.50%
10 Years	rr_AverageAnnualReturnYear10	5.78%
Since Inception	rr_AverageAnnualReturnSinceInception	6.63%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	6.51%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	6.29%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	6.38%
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-1-31
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
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	2.11%
5 Years	rr_AverageAnnualReturnYear05	4.55%
10 Years	rr_AverageAnnualReturnYear10	4.47%
Since Inception	rr_AverageAnnualReturnSinceInception	5.27%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 09, 1992
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-1-31
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
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	0.61%
5 Years	rr_AverageAnnualReturnYear05	4.29%
10 Years	rr_AverageAnnualReturnYear10	4.28%
Since Inception	rr_AverageAnnualReturnSinceInception	4.88%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 13, 1996
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-1-31
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
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	4.58%
5 Years	rr_AverageAnnualReturnYear05	4.62%
10 Years	rr_AverageAnnualReturnYear10	4.12%
Since Inception	rr_AverageAnnualReturnSinceInception	4.47%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 25, 1996
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.40%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.77%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	1.19%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.32%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	0.87%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-1-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	89
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	346
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	624
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,415
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	89
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	346
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	624
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,415
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	6.40%
5 Years	rr_AverageAnnualReturnYear05	5.40%
10 Years	rr_AverageAnnualReturnYear10	4.90%
Since Inception	rr_AverageAnnualReturnSinceInception	5.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 23, 1992
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-1-31
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 2002	rr_AnnualReturn2002	7.37%
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%
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	6.77%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	6.55%
5 Years	rr_AverageAnnualReturnYear05	5.66%
10 Years	rr_AverageAnnualReturnYear10	5.16%
Since Inception	rr_AverageAnnualReturnSinceInception	5.66%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	5.12%
5 Years	rr_AverageAnnualReturnYear05	3.94%
10 Years	rr_AverageAnnualReturnYear10	3.41%
Since Inception	rr_AverageAnnualReturnSinceInception	3.48%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	4.23%
5 Years	rr_AverageAnnualReturnYear05	3.81%
10 Years	rr_AverageAnnualReturnYear10	3.36%
Since Inception	rr_AverageAnnualReturnSinceInception	3.48%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991

[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, 2013 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. Prior to November 1, 2012, MCM waived or limited fees or assumed other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses did not exceed 0.65% for Class A and K shares, 1.40% for Class B and C shares, and 0.40% 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.

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Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund

Munder Large-Cap Value 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Large-Cap Value Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class R Shares	Class Y Shares
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 Large-Cap Value Fund		Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares		Class Y Shares
Management Fees		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
Other Expenses		1.25%	1.23%	1.25%	1.37%	1.25%		1.01%
Acquired Fund Fees and Expenses		0.05%	0.05%	0.05%	0.05%	0.05%		0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	[2]	2.30%	3.03%	3.05%	2.17%	2.55%		1.81%
Fee Waivers and/or Expense Reimbursements	[3]	(0.75%)	(0.73%)	(0.75%)	(0.62%)	(0.75%)		(0.51%)
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	[2][3]	1.55%	2.30%	2.30%	1.55%	1.80%		1.30%

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 Large-Cap Value Fund (USD $)	Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	699	733	333	158	183	132
Expense Example, with Redemption, 3 Years	1,161	1,168	872	619	722	520
Expense Example, with Redemption, 5 Years	1,648	1,728	1,536	1,108	1,288	932
Expense Example, with Redemption, 10 Years	2,986	3,123	3,312	2,455	2,829	2,085

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

Expense Example, No Redemption Munder Large-Cap Value Fund (USD $)	Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	699	233	233	158	183	132
Expense Example, No Redemption, 3 Years	1,161	868	872	619	722	520
Expense Example, No Redemption, 5 Years	1,648	1,528	1,536	1,108	1,288	932
Expense Example, No Redemption, 10 Years	2,986	3,123	3,312	2,455	2,829	2,085

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 120%
of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The sub-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 large-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.  Large-capitalization companies means
those companies with market capitalizations within the range of companies
included in the Russell 1000® Index ($251 million to $625.3 billion as of
September 28, 2012).  The Fund may, however, also invest in equity securities
of smaller companies.
  
The sub-advisor seeks to invest in companies whose equity securities are trading
at an attractive valuation relative to the marketplace, their peers and historical
levels and possess a catalyst for favorable or improved security values. In
addition to valuation, the sub-advisor may also consider one or more of the
following factors in choosing companies:
  
  o financial strength, strong fundamentals and low price-to-earnings
    ratios;

  o improving earnings estimates and stock price trends;

  o quality of management, profitability and industry leadership
    position;

  o current dividend; and/or

  o unrecognized assets.

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 will 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 large-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.
  
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 9/30/12:  14.64%                             
Best Quarter:   16.79%   (quarter ended 6/30/03)   
Worst Quarter: -18.59%   (quarter ended 12/31/08)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Large-Cap Value Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	(7.38%)	(3.46%)	2.48%	6.11%	Aug. 08, 1994
Class B Shares	CLASS B Return Before Taxes	(7.62%)	(3.45%)	2.45%	6.09%	Aug. 09, 1994
Class C Shares	CLASS C Return Before Taxes	(3.73%)	(3.10%)	2.29%	4.49%	Dec. 05, 1995
Class K Shares	CLASS K Return Before Taxes	(1.96%)	(2.36%)	3.07%	6.48%	Jul. 05, 1994
Class R Shares	CLASS R Return Before Taxes	(2.31%)	(2.63%)		(1.62%)	Nov. 01, 2006
Class Y Shares	CLASS Y Return Before Taxes	(1.77%)	(2.14%)	3.32%	6.74%	Jul. 05, 1994
After Taxes on Distributions Class Y Shares	CLASS Y Return After Taxes on Distributions	(2.07%)	(2.68%)	2.78%	5.46%	Jul. 05, 1994
After Taxes on Distributions and Sales Class Y Shares	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(1.15%)	(1.84%)	2.83%	5.43%	Jul. 05, 1994
Russell 1000® Value Index	Russell 1000® Value Index (reflects no deductions for fees, expenses or taxes)	0.39%	(2.64%)	3.89%	8.57%		8.43%	7.28%	(1.70%)

The index returns from inception for Class Y, A, B, C, K and R shares are as of
7/1/94, 8/1/94, 8/1/94, 12/1/95, 7/1/94 and 11/1/06, 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 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).

[3] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2013 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 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.

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Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Mid-Cap Value Fund
Risk Return [Abstract]	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 8 of the Fund's Prospectus and the section entitled "Additional Purchase, Redemption, Exchange and Conversion Information" on page 58 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 46% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	46.00%
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 ($251 million to $22.1 billion as of September 28, 2012). 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 Fund commenced operations on July 1, 2011. 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 1, 2011. Performance history will be available for the Fund after it has been in operation for a full calendar year.
Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Mid-Cap Value Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	112.21%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	113.22%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(111.71%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.51%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	694
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	10,475	[5]
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	10,475	[5]
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	10,475	[5]
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	694
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	10,475	[5]
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	10,475	[5]
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	10,475	[5]
Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Mid-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	27.73%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	28.49%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(27.23%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.26%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	127
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	4,731
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	7,426
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	10,235
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	127
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	4,731
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	7,426
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	10,235

[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 through at least October 31, 2013 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.

[5] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

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Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | 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 8 of the Fund's Prospectus and the section entitled "Additional
Purchase, Redemption, Exchange and Conversion Information" on page 58 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 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 Integrity Small/Mid-Cap Value Fund		Class A Shares	Class Y Shares
Management Fees		0.90%	0.90%
Distribution and/or Service (12b-1) Fees		0.25%	none
Other Expenses		133.79%	141.61%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements		134.94%	142.51%
Fee Waivers and/or Expense Reimbursements	[1]	(133.44%)	(141.26%)
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 Shares	Class Y Shares
Expense Example, with Redemption, 1 Year		694	127
Expense Example, with Redemption, 3 Years	[1]	10,475	10,502
Expense Example, with Redemption, 5 Years	[1]	10,475	10,502
Expense Example, with Redemption, 10 Years	[1]	10,475	10,502

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 Shares	Class Y Shares
Expense Example, No Redemption, 1 Year		694	127
Expense Example, No Redemption, 3 Years	[1]	10,475	10,502
Expense Example, No Redemption, 5 Years	[1]	10,475	10,502
Expense Example, No Redemption, 10 Years	[1]	10,475	10,502

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 ($30 million to $8.4 billion as of September
28, 2012). 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.

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 Fund commenced operations on July 1, 2011. 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] Pursuant to an Expense Limitation Agreement, MCM (as defined below) has agreed contractually through at least October 31, 2013 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.

[1] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

[1] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity
Risk Return [Abstract]	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 9 of the Fund's Prospectus and the section entitled "Additional Purchase, Redemption, Exchange and Conversion Information" on page 58 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 84% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	84.00%
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. Generally, structures in emerging market countries are less diverse and mature than those of developed countries and their political systems are less stable; therefore, the risks of investing in foreign securities in general tend to be amplified for investment in emerging markets. Further, due to the small securities markets and low trading volumes in emerging market countries, investments may be more illiquid and volatile than investments in developed countries and therefore subject to 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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will differ.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12: 13.48%                          Best Quarter:      21.92%  (quarter ended 6/30/09) Worst Quarter:    -23.95% (quarter ended 9/30/08)
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, 2011 (including maximum sales charges)
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | MSCI ACWI ex USA Index (Net Dividends)
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	MSCI ACWI ex USA Index (Net Dividends) (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(13.71%)
Since Inception	rr_AverageAnnualReturnSinceInception	(3.96%)
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	4.73%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%	[3]
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	5.79%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(4.31%)	[4]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.48%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	692
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,816
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	2,922
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	5,612
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	692
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,816
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	2,922
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	5,612
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(20.45%)
Since Inception	rr_AverageAnnualReturnSinceInception	(11.52%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2007
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	4.77%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%	[3]
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	6.58%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(4.35%)	[4]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	2.23%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	326
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,557
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	2,847
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	5,896
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	226
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,557
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	2,847
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	5,896
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(17.34%)
Since Inception	rr_AverageAnnualReturnSinceInception	(11.11%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2007
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	4.73%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%	[3]
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	5.54%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(4.31%)	[4]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	1.23%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	125
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,269
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	2,400
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	5,175
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	125
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,269
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	2,400
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	5,175
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%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	13.48%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(15.67%)
Since Inception	rr_AverageAnnualReturnSinceInception	(10.18%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2007
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(16.36%)
Since Inception	rr_AverageAnnualReturnSinceInception	(10.42%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2007
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(9.07%)
Since Inception	rr_AverageAnnualReturnSinceInception	(8.14%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 16, 2007
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class I Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	2.89%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%	[3]
Total Annual Fund Operating Expenses Before Waivers and/or Reimbursements	rr_ExpensesOverAssets	3.70%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(2.73%)	[4]
Total Net Annual Fund Operating Expenses After Waivers and/or Reimbursements	rr_NetExpensesOverAssets	0.97%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	99
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	879
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,679
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,773
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	99
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	879
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,679
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,773
Label	rr_AverageAnnualReturnLabel	CLASS I Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(15.61%)
Since Inception	rr_AverageAnnualReturnSinceInception	(9.98%)
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, 2013 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 Bond Fund (Prospectus Summary) | 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Bond Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class Y Shares
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 Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
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%	0.77%	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%	1.19%	0.96%
Fee Waivers and/or Expense Reimbursements	[2]	(0.34%)	(0.34%)	(0.34%)	(0.32%)	(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 Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	485	665	265	89	63
Expense Example, with Redemption, 3 Years	736	882	582	346	272
Expense Example, with Redemption, 5 Years	1,007	1,226	1,026	624	498
Expense Example, with Redemption, 10 Years	1,778	2,063	2,258	1,415	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 Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	485	165	165	89	63
Expense Example, No Redemption, 3 Years	736	582	582	346	272
Expense Example, No Redemption, 5 Years	1,007	1,026	1,026	624	498
Expense Example, No Redemption, 10 Years	1,778	2,063	2,258	1,415	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 362%
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 selects securities based on an analysis of current versus historical
interest rate relationships and the relative value of the bond market sectors.
  
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) to manage cash.
  
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 to-be-announced (TBA) transaction, a seller agrees to deliver a
security at a future date; however, the seller does not specify the particular
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 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. 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 9/30/12:  6.77%                          
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Bond Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	2.11%	4.55%	4.47%	5.27%	Dec. 09, 1992
Class B Shares	CLASS B Return Before Taxes	0.61%	4.29%	4.28%	4.88%	Mar. 13, 1996
Class C Shares	CLASS C Return Before Taxes	4.58%	4.62%	4.12%	4.47%	Mar. 25, 1996
Class K Shares	CLASS K Return Before Taxes	6.40%	5.40%	4.90%	5.49%	Nov. 23, 1992
Class Y Shares	CLASS Y Return Before Taxes	6.55%	5.66%	5.16%	5.66%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions	CLASS Y Return After Taxes on Distributions	5.12%	3.94%	3.41%	3.48%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions and Sales	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	4.23%	3.81%	3.36%	3.48%	Dec. 01, 1991
Barclays U.S. Aggregate Bond Index	Barclays U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)	7.84%	6.50%	5.78%	6.63%		6.51%	6.29%	6.38%

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, 2013 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. Prior to November 1, 2012, MCM waived or limited fees or assumed other expenses of the Fund so that, on an annualized basis, the Total Net Annual Operating Expenses did not exceed 0.65% for Class A and K shares, 1.40% for Class B and C shares, and 0.40% 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 [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Munder International Equity 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 58 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 23% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	23.00%
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 primarily in foreign securities, i.e., non-U.S. dollar-denominated securities traded out of the U.S. and U.S. dollar-denominated securities of foreign issuers traded in the U.S.    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, including depositary receipts for such securities). 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 highly quantitative approach to investing.  Stocks are selected based on fundamental factors that the advisor believes are effective predictors of stock performance. In an effort to manage the volatility of the Fund's performance, country and sector weightings are targeted to remain within specific ranges as compared to the Morgan Stanley Capital International Europe, Australasia, Far East (MSCI EAFE) Index.  Accordingly, the Fund may concentrate its investments within one or more countries or geographic regions; however, the Fund will be invested in a minimum of ten countries. Utilizing a variety of quantitative analyses, the advisor seeks to identify foreign stocks that offer favorable risk-adjusted returns over time. Securities in which the Fund invests will primarily be from countries represented in the MSCI EAFE Index universe, but may also include larger-capitalization companies in other countries. Although Fund tends to invest mostly in larger-capitalization companies, 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 developed foreign countries.    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.    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.    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.    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.    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.    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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:   7.71%                         Best Quarter:     32.66% (quarter ended 6/30/09) Worst Quarter:   -19.59% (quarter ended 9/30/02)
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	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 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 Y, A, B, C and K shares are as of 12/1/91, 12/1/92, 3/1/94, 10/1/95 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. 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, 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, 2011 (including maximum sales charges)
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | MSCI EAFE Index (Net Dividends)
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	MSCI EAFE Index (Net Dividends) (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(12.14%)
5 Years	rr_AverageAnnualReturnYear05	(4.72%)
10 Years	rr_AverageAnnualReturnYear10	4.67%
Since Inception	rr_AverageAnnualReturnSinceInception	4.80%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	5.53%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	4.04%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	3.75%
Average Annual Returns, Since Inception Quinary	ck0001214511_AverageAnnualReturnSinceInceptionQuinary	5.52%
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.03%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	745
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,152
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,583
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,779
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	745
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,152
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,583
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,779
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(19.41%)
5 Years	rr_AverageAnnualReturnYear05	(6.58%)
10 Years	rr_AverageAnnualReturnYear10	3.44%
Since Inception	rr_AverageAnnualReturnSinceInception	4.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 30, 1992
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	5.00%	[4]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.78%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	781
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,162
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,669
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,930
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	281
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	862
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,469
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,930
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(19.52%)
5 Years	rr_AverageAnnualReturnYear05	(6.52%)
10 Years	rr_AverageAnnualReturnYear10	3.40%
Since Inception	rr_AverageAnnualReturnSinceInception	3.36%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 09, 1994
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.78%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	381
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	862
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,469
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,109
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	281
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	862
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,469
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,109
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(16.16%)
5 Years	rr_AverageAnnualReturnYear05	(6.21%)
10 Years	rr_AverageAnnualReturnYear10	3.26%
Since Inception	rr_AverageAnnualReturnSinceInception	2.92%
Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 29, 1995
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.22%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.99%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	202
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	624
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,073
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,317
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	202
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	624
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,073
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,317
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(14.79%)
5 Years	rr_AverageAnnualReturnYear05	(5.52%)
10 Years	rr_AverageAnnualReturnYear10	4.03%
Since Inception	rr_AverageAnnualReturnSinceInception	4.87%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 23, 1992
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.78%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	181
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	560
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	964
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,095
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	181
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	560
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	964
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,095
Annual Return 2002	rr_AnnualReturn2002	(17.42%)
Annual Return 2003	rr_AnnualReturn2003	40.54%
Annual Return 2004	rr_AnnualReturn2004	17.14%
Annual Return 2005	rr_AnnualReturn2005	14.61%
Annual Return 2006	rr_AnnualReturn2006	28.13%
Annual Return 2007	rr_AnnualReturn2007	6.71%
Annual Return 2008	rr_AnnualReturn2008	(39.75%)
Annual Return 2009	rr_AnnualReturn2009	30.23%
Annual Return 2010	rr_AnnualReturn2010	6.51%
Annual Return 2011	rr_AnnualReturn2011	(14.51%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	7.71%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	32.66%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2002
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(19.59%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(14.51%)
5 Years	rr_AverageAnnualReturnYear05	(5.28%)
10 Years	rr_AverageAnnualReturnYear10	4.29%
Since Inception	rr_AverageAnnualReturnSinceInception	5.11%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(14.56%)
5 Years	rr_AverageAnnualReturnYear05	(5.81%)
10 Years	rr_AverageAnnualReturnYear10	3.91%
Since Inception	rr_AverageAnnualReturnSinceInception	4.29%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(8.56%)
5 Years	rr_AverageAnnualReturnYear05	(4.13%)
10 Years	rr_AverageAnnualReturnYear10	3.98%
Since Inception	rr_AverageAnnualReturnSinceInception	4.34%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 01, 1991

[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.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund
Risk Return [Abstract]	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 58 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 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 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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:  17.55%                           Best Quarter:      37.04% (quarter ended 6/30/03)   Worst Quarter:    -31.58% (quarter ended 6/30/02)
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	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 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 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. 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, 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, 2011 (including maximum sales charges)
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | S&P 500® Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	S&P 500® Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	2.11%
5 Years	rr_AverageAnnualReturnYear05	(0.25%)
10 Years	rr_AverageAnnualReturnYear10	2.92%
Since Inception	rr_AverageAnnualReturnSinceInception	2.87%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	6.26%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	2.86%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	3.92%
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Russell 1000® Growth Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell 1000® Growth Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	2.64%
5 Years	rr_AverageAnnualReturnYear05	2.50%
10 Years	rr_AverageAnnualReturnYear10	2.60%
Since Inception	rr_AverageAnnualReturnSinceInception	1.94%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	5.24%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	1.68%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	4.89%
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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	rr_ExpensesOverAssets	1.68%
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
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(10.31%)
5 Years	rr_AverageAnnualReturnYear05	3.81%
10 Years	rr_AverageAnnualReturnYear10	3.35%
Since Inception	rr_AverageAnnualReturnSinceInception	7.50%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 19, 1996
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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	rr_ExpensesOverAssets	2.43%
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
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(10.25%)
5 Years	rr_AverageAnnualReturnYear05	3.87%
10 Years	rr_AverageAnnualReturnYear10	3.32%
Since Inception	rr_AverageAnnualReturnSinceInception	2.99%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 1998
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	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	rr_ExpensesOverAssets	2.43%
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
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(6.69%)
5 Years	rr_AverageAnnualReturnYear05	4.21%
10 Years	rr_AverageAnnualReturnYear10	3.17%
Since Inception	rr_AverageAnnualReturnSinceInception	1.92%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 03, 1998
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[5]
Other Expenses	rr_OtherExpensesOverAssets	0.67%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.92%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	195
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	603
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,037
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,243
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	195
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	603
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,037
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,243
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(5.30%)
5 Years	rr_AverageAnnualReturnYear05	4.72%
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.94%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 29, 2004
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.67%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.42%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	145
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	449
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	776
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,702
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	145
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	449
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	776
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,702
Annual Return 2002	rr_AnnualReturn2002	(44.42%)
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	79.50%
Annual Return 2010	rr_AnnualReturn2010	19.63%
Annual Return 2011	rr_AnnualReturn2011	(4.83%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	17.55%
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	Jun. 30, 2002
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(31.58%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(4.83%)
5 Years	rr_AverageAnnualReturnYear05	5.26%
10 Years	rr_AverageAnnualReturnYear10	4.20%
Since Inception	rr_AverageAnnualReturnSinceInception	3.72%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 1998
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(5.54%)
5 Years	rr_AverageAnnualReturnYear05	5.11%
10 Years	rr_AverageAnnualReturnYear10	4.12%
Since Inception	rr_AverageAnnualReturnSinceInception	3.61%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 1998
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(2.23%)
5 Years	rr_AverageAnnualReturnYear05	4.54%
10 Years	rr_AverageAnnualReturnYear10	3.65%
Since Inception	rr_AverageAnnualReturnSinceInception	3.24%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 01, 1998

[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.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund
Risk Return [Abstract]	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 58 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 51% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	51.00%
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 for Class R6 Shares are based on estimated expenses for the current 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 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 ($30 million to $4.5 billion as of September 28, 2012). 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. Therefore, the total returns for Class A shares, the class of shares with the longest performance history, in the bar chart below for the periods prior to May 14, 2011 are those of the Veracity Fund's Class R shares, which have not been restated to reflect any difference in expenses and 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 be different.    The performance for Class A 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 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 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.
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	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be different.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:   8.85%                          Best Quarter:    23.78% (quarter ended 6/30/09) Worst Quarter:  -20.78% (quarter ended 12/31/08)
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 as that class had not commenced operation as of December 31, 2011.
Caption	rr_AverageAnnualReturnCaption	AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges in existence during the periods indicated)
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Russell 2000® Value Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell 2000® Value Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(5.50%)
5 Years	rr_AverageAnnualReturnYear05	(1.87%)
Since Inception	rr_AverageAnnualReturnSinceInception	3.89%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	2.39%
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.48%
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	(0.13%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.50%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	694
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,024
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,376
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,366
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	694
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,024
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,376
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,366
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%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	8.85%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(2.91%)
5 Years	rr_AverageAnnualReturnYear05	1.40%
Since Inception	rr_AverageAnnualReturnSinceInception	6.01%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 30, 2004
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class A Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS A Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(2.91%)
5 Years	rr_AverageAnnualReturnYear05	1.11%
Since Inception	rr_AverageAnnualReturnSinceInception	5.64%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 30, 2004
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class A Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS A Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(1.89%)
5 Years	rr_AverageAnnualReturnYear05	1.14%
Since Inception	rr_AverageAnnualReturnSinceInception	5.17%
Inception Date	rr_AverageAnnualReturnInceptionDate	Mar. 30, 2004
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	5.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	0.90%
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	2.38%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.13%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	2.25%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	728
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,030
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,459
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,520
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	228
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	730
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,259
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,520
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(8.41%)
5 Years	rr_AverageAnnualReturnYear05	0.27%
Since Inception	rr_AverageAnnualReturnSinceInception	3.76%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 07, 2005
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[6]
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.49%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	2.39%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.14%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	2.25%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	328
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	732
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,263
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,716
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	228
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	732
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,263
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,716
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(4.55%)
5 Years	rr_AverageAnnualReturnYear05	0.66%
Since Inception	rr_AverageAnnualReturnSinceInception	3.91%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 07, 2005
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.73%
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	(0.13%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.50%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	153
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	502
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	874
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,922
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	153
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	502
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	874
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,922
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(2.85%)
5 Years	rr_AverageAnnualReturnYear05	1.42%
Since Inception	rr_AverageAnnualReturnSinceInception	4.67%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 07, 2005
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[7]
Other Expenses	rr_OtherExpensesOverAssets	0.49%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	1.89%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.14%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.75%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	178
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	580
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,008
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,200
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	178
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	580
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,008
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,200
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(3.09%)
5 Years	rr_AverageAnnualReturnYear05	1.17%
Since Inception	rr_AverageAnnualReturnSinceInception	4.42%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 07, 2005
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class R6 Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.20%	[3]
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	1.10%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	none	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.10%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
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	606
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,340
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	606
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,340
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.90%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.49%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	1.39%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.14%)	[4]
Total Net Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.25%	[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	127
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	426
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	747
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,656
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	127
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	426
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	747
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,656
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(2.60%)
5 Years	rr_AverageAnnualReturnYear05	1.67%
Since Inception	rr_AverageAnnualReturnSinceInception	4.93%
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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. 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, 2013 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 MST 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

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Jun. 30, 2012
Registrant Name	dei_EntityRegistrantName	MUNDER SERIES TRUST
Central Index Key	dei_EntityCentralIndexKey	0001214511
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Oct. 25, 2012
Document Effective Date	dei_DocumentEffectiveDate	Oct. 26, 2012
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUCAX
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUCBX
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUCCX
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUCKX
Munder Bond Fund (Prospectus Summary) | Munder Bond Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUCYX
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MNNAX
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MNNBX
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MNNCX
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MNNRX
Munder Growth Opportunities Fund (Prospectus Summary) | Munder Growth Opportunities Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MNNYX
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUXAX
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUXBX
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUXKX
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUXRX
Munder Index 500 Fund (Prospectus Summary) | Munder Index 500 Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUXYX
Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Mid-Cap Value Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MAIMX
Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Mid-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MYIMX
Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Small/Mid-Cap Value Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MAISX
Munder Integrity Small/Mid-Cap Value Fund (Prospectus Summary) | Munder Integrity Small/Mid-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MYISX
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUIAX
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUIEX
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUICX
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUIKX
Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUIYX
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MAICX
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MICCX
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MICYX
Munder International Fund - Core Equity (Prospectus Summary) | Munder International Fund - Core Equity | Class I Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MICIX
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MISAX
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MCISX
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class R6 Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MSSIX
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MYSIX
Munder International Small-Cap Fund (Prospectus Summary) | Munder International Small-Cap Fund | Class I Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MISIX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGAX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGBX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGCX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGKX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGRX
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MUGYX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMEAX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMEBX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMECX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMEKX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMERX
Munder Micro-Cap Equity Fund (Prospectus Summary) | Munder Micro-Cap Equity Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMEYX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGOAX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGROX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGOTX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGOKX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MMSRX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class R6 Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGOSX
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MGOYX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class A Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VSCVX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class B Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MBVSX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class C Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MCVSX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class K Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MKVSX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class R Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MRVSX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class R6 Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MVSSX
Munder Veracity Small-Cap Value Fund (Prospectus Summary) | Munder Veracity Small-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VSVIX

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Munder Index 500 Fund (Prospectus Summary) | 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Index 500 Fund	Class A Shares		Class B Shares		Class K Shares	Class R Shares	Class Y Shares
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 Shares		Class B Shares		Class K Shares	Class R Shares		Class Y Shares
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	0.45%		0.45%		0.70%	0.46%		0.45%
Total Annual Fund Operating Expenses	0.90%		1.65%		0.90%	1.16%		0.65%

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 Shares	Class B Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	340	468	92	118	66
Expense Example, with Redemption, 3 Years	530	720	287	368	208
Expense Example, with Redemption, 5 Years	736	997	498	638	362
Expense Example, with Redemption, 10 Years	1,330	1,754	1,108	1,409	810

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

Expense Example, No Redemption Munder Index 500 Fund (USD $)	Class A Shares	Class B Shares	Class K Shares	Class R Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	340	168	92	118	66
Expense Example, No Redemption, 3 Years	530	520	288	368	208
Expense Example, No Redemption, 5 Years	736	897	498	638	362
Expense Example, No Redemption, 10 Years	1,330	1,754	1,108	1,409	810

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 3%
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 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 9/30/12:    15.98%                           
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, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Index 500 Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	(1.14%)	(1.32%)	2.04%	7.07%	Dec. 09, 1992
Class B Shares	CLASS B Return Before Taxes	(1.59%)	(1.26%)	2.07%	6.03%	Oct. 31, 1995
Class K Shares	CLASS K Return Before Taxes	1.24%	(0.89%)	2.25%	7.15%	Dec. 07, 1992
Class R Shares	CLASS R Return Before Taxes	1.04%	(1.14%)		3.01%	Jul. 29, 2004
Class Y Shares	CLASS Y Return Before Taxes	1.54%	(0.64%)	2.51%	7.94%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions	CLASS Y Return After Taxes on Distributions	(0.93%)	(2.13%)	1.60%	6.79%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions and Sales	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	3.43%	(0.67%)	2.05%	6.69%	Dec. 01, 1991
S&P 500® Index	S&P 500® Index (reflects no deductions for fees, expenses or taxes)	2.11%	(0.25%)	2.92%	8.36%		7.85%	6.81%	3.92%

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. 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, 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 0.80%, respectively, for Class A shares, and 0.50% and 1.15%, 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 [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund
Risk Return [Abstract]	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 58 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 48% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	48.00%
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 for Class R6 Shares are based on estimated expenses for the current 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 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 ($237 million to $14.7 billion as of September 28, 2012) or within the range of companies included in the Russell Midcap® Index ($251 million to $22.1 billion as of September 28, 2012).    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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:    13.46%                            Best Quarter:      16.48% (quarter ended 9/30/09)    Worst Quarter:    -25.26% (quarter ended 12/31/08)
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, 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 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	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. 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, 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 as that class had not commenced operation as December 31, 2011.
Caption	rr_AverageAnnualReturnCaption	AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges)
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Russell Midcap® Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell Midcap® Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(1.55%)
5 Years	rr_AverageAnnualReturnYear05	1.41%
10 Years	rr_AverageAnnualReturnYear10	6.99%
Since Inception	rr_AverageAnnualReturnSinceInception	6.69%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	5.79%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	9.94%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	6.91%
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Russell Midcap® Growth Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell Midcap® Growth Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	(1.65%)
5 Years	rr_AverageAnnualReturnYear05	2.44%
10 Years	rr_AverageAnnualReturnYear10	5.29%
Since Inception	rr_AverageAnnualReturnSinceInception	4.79%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	0.44%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	9.73%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	6.84%
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.32%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.33%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	678
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	948
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,239
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,063
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	678
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	948
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,239
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,063
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(6.47%)
5 Years	rr_AverageAnnualReturnYear05	1.09%
10 Years	rr_AverageAnnualReturnYear10	6.49%
Since Inception	rr_AverageAnnualReturnSinceInception	5.79%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 03, 2000
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	5.00%	[4]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.32%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.08%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	711
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	952
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,319
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,219
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	211
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	652
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,119
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,219
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(6.68%)
5 Years	rr_AverageAnnualReturnYear05	1.09%
10 Years	rr_AverageAnnualReturnYear10	6.45%
Since Inception	rr_AverageAnnualReturnSinceInception	5.79%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 05, 2000
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	0.32%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.08%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	311
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	652
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,119
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,410
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	211
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	652
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,119
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,410
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(2.75%)
5 Years	rr_AverageAnnualReturnYear05	1.47%
10 Years	rr_AverageAnnualReturnYear10	6.18%
Since Inception	rr_AverageAnnualReturnSinceInception	4.94%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 14, 2000
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.57%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.33%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	135
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	421
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	729
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,601
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	135
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	421
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	729
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,601
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.04%)
5 Years	rr_AverageAnnualReturnYear05	2.23%
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	9.56%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 17, 2002
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[6]
Other Expenses	rr_OtherExpensesOverAssets	0.31%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.57%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	160
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	496
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	855
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,867
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	160
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	496
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	855
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,867
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.27%)
5 Years	rr_AverageAnnualReturnYear05	1.98%
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	6.54%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 29, 2004
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class R6 Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.09%	[7]
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.85%	[3],[7]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	87
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	271
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	471
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,049
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	87
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	271
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	471
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,049
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.31%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.07%	[3]
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	109
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	340
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	590
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	1,306
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	109
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	340
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	590
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	1,306
Annual Return 2002	rr_AnnualReturn2002	(15.22%)
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%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	13.46%
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%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(0.77%)
5 Years	rr_AverageAnnualReturnYear05	2.49%
10 Years	rr_AverageAnnualReturnYear10	7.35%
Since Inception	rr_AverageAnnualReturnSinceInception	9.22%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 24, 1998
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(0.77%)
5 Years	rr_AverageAnnualReturnYear05	2.43%
10 Years	rr_AverageAnnualReturnYear10	7.30%
Since Inception	rr_AverageAnnualReturnSinceInception	8.80%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 24, 1998
Munder Mid-Cap Core Growth Fund (Prospectus Summary) | Munder Mid-Cap Core Growth Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(0.50%)
5 Years	rr_AverageAnnualReturnYear05	2.13%
10 Years	rr_AverageAnnualReturnYear10	6.50%
Since Inception	rr_AverageAnnualReturnSinceInception	8.01%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 24, 1998

[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] Other Expenses and Total Annual Fund Operating Expenses for Class R6 Shares are based on estimated expenses for the current year. For Class R6 shares, fees paid to intermediaries for shareholder servicing, record keeping and sub-transfer agency represent 0.00% of Other Expenses.

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Munder Integrity Mid-Cap Value Fund (Prospectus Summary) | 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 8 of the Fund's Prospectus and the section entitled "Additional
Purchase, Redemption, Exchange and Conversion Information" on page 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Integrity Mid-Cap Value 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 Integrity Mid-Cap Value Fund		Class A Shares	Class Y Shares
Management Fees		0.75%	0.75%
Distribution and/or Service (12b-1) Fees		0.25%	none
Other Expenses		112.21%	27.73%
Acquired Fund Fees and Expenses		0.01%	0.01%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	[1]	113.22%	28.49%
Fee Waivers and/or Expense Reimbursements	[2]	(111.71%)	(27.23%)
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	[1][2]	1.51%	1.26%

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 Shares		Class Y Shares
Expense Example, with Redemption, 1 Year	694		127
Expense Example, with Redemption, 3 Years	10,475	[1]	4,731
Expense Example, with Redemption, 5 Years	10,475	[1]	7,426
Expense Example, with Redemption, 10 Years	10,475	[1]	10,235

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 Shares		Class Y Shares
Expense Example, No Redemption, 1 Year	694		127
Expense Example, No Redemption, 3 Years	10,475	[1]	4,731
Expense Example, No Redemption, 5 Years	10,475	[1]	7,426
Expense Example, No Redemption, 10 Years	10,475	[1]	10,235

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 46% 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 ($251 million to $22.1 billion as of
September 28, 2012). 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 Fund commenced operations on July 1, 2011. 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] 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 through at least October 31, 2013 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.

[1] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

[1] Based on the Fund's current asset level and the expiration of the current written Expense Limitation Agreement on October 31, 2013, the amount of the Fund's expenses would exceed the value of the initial $10,000 investment in the second year.

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Munder Growth Opportunities Fund (Prospectus Summary) | 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder Growth Opportunities Fund	Class A Shares		Class B Shares		Class C Shares		Class R Shares	Class Y Shares
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 Shares	Class B Shares	Class C Shares	Class R Shares		Class Y Shares
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%	0.67%		0.67%
Total Annual Fund Operating Expenses	1.68%	2.43%	2.43%	1.92%		1.42%

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 Shares	Class B Shares	Class C Shares	Class R Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	711	746	346	195	145
Expense Example, with Redemption, 3 Years	1,050	1,058	758	603	449
Expense Example, with Redemption, 5 Years	1,412	1,496	1,296	1,037	776
Expense Example, with Redemption, 10 Years	2,428	2,581	2,766	2,243	1,702

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

Expense Example, No Redemption Munder Growth Opportunities Fund (USD $)	Class A Shares	Class B Shares	Class C Shares	Class R Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	711	246	246	195	145
Expense Example, No Redemption, 3 Years	1,050	758	758	603	449
Expense Example, No Redemption, 5 Years	1,412	1,296	1,296	1,037	776
Expense Example, No Redemption, 10 Years	2,428	2,581	2,766	2,243	1,702

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 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 9/30/12:  17.55%                          
Best Quarter:      37.04% (quarter ended 6/30/03)  
Worst Quarter:    -31.58% (quarter ended 6/30/02)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges)

Average Annual Total Returns Munder Growth Opportunities Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary
Class A Shares	CLASS A Return Before Taxes	(10.31%)	3.81%	3.35%	7.50%	Aug. 19, 1996
Class B Shares	CLASS B Return Before Taxes	(10.25%)	3.87%	3.32%	2.99%	Jun. 01, 1998
Class C Shares	CLASS C Return Before Taxes	(6.69%)	4.21%	3.17%	1.92%	Nov. 03, 1998
Class R Shares	CLASS R Return Before Taxes	(5.30%)	4.72%		6.94%	Jul. 29, 2004
Class Y Shares	CLASS Y Return Before Taxes	(4.83%)	5.26%	4.20%	3.72%	Jun. 01, 1998
Class Y Shares After Taxes on Distributions	CLASS Y Return After Taxes on Distributions	(5.54%)	5.11%	4.12%	3.61%	Jun. 01, 1998
Class Y Shares After Taxes on Distributions and Sales	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(2.23%)	4.54%	3.65%	3.24%	Jun. 01, 1998
S&P 500® Index	S&P 500® Index (reflects no deductions for fees, expenses or taxes)	2.11%	(0.25%)	2.92%	2.87%		6.26%	2.86%	3.92%
Russell 1000® Growth Index	Russell 1000® Growth Index (reflects no deductions for fees, expenses or taxes)	2.64%	2.50%	2.60%	1.94%		5.24%	1.68%	4.89%

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.
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, 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.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Oct. 26, 2012
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Munder Large-Cap Value 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 58 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 120% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	120.00%
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 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 large-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.  Large-capitalization companies means those companies with market capitalizations within the range of companies included in the Russell 1000® Index ($251 million to $625.3 billion as of September 28, 2012).  The Fund may, however, also invest in equity securities of smaller companies.    The sub-advisor seeks to invest in companies whose equity securities are trading at an attractive valuation relative to the marketplace, their peers and historical levels and possess a catalyst for favorable or improved security values. In addition to valuation, the sub-advisor may also consider one or more of the following factors in choosing companies:      o financial strength, strong fundamentals and low price-to-earnings     ratios;   o improving earnings estimates and stock price trends;   o quality of management, profitability and industry leadership     position;   o current dividend; and/or   o unrecognized assets. 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 will 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 large-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.    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 Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	Due to differing sales charges and expenses, the performance of classes not shown in the bar chart will be lower.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	YTD through 9/30/12:  14.64%                              Best Quarter:   16.79%   (quarter ended 6/30/03)    Worst Quarter: -18.59%   (quarter ended 12/31/08)
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, 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 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 Y, A, B, C, K and R shares are as of 7/1/94, 8/1/94, 8/1/94, 12/1/95, 7/1/94 and 11/1/06, 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 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, 2011 (including maximum sales charges)
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Russell 1000® Value Index
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	Russell 1000® Value Index (reflects no deductions for fees, expenses or taxes)
1 Year	rr_AverageAnnualReturnYear01	0.39%
5 Years	rr_AverageAnnualReturnYear05	(2.64%)
10 Years	rr_AverageAnnualReturnYear10	3.89%
Since Inception	rr_AverageAnnualReturnSinceInception	8.57%
Average Annual Returns, Since Inception Secondary	ck0001214511_AverageAnnualReturnSinceInceptionSecondary	8.43%
Average Annual Returns, Since Inception Tertiary	ck0001214511_AverageAnnualReturnSinceInceptionTertiary	7.28%
Average Annual Returns, Since Inception Quaternary	ck0001214511_AverageAnnualReturnSinceInceptionQuaternary	(1.70%)
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class A Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none	[2]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	1.25%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	2.30%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.75%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.55%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	699
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,161
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,648
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,986
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	699
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,161
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,648
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,986
Label	rr_AverageAnnualReturnLabel	CLASS A Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(7.38%)
5 Years	rr_AverageAnnualReturnYear05	(3.46%)
10 Years	rr_AverageAnnualReturnYear10	2.48%
Since Inception	rr_AverageAnnualReturnSinceInception	6.11%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 08, 1994
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class B Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	5.00%	[5]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	1.23%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	3.03%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.73%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	2.30%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	733
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,168
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,728
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,123
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	233
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	868
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,528
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,123
Label	rr_AverageAnnualReturnLabel	CLASS B Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(7.62%)
5 Years	rr_AverageAnnualReturnYear05	(3.45%)
10 Years	rr_AverageAnnualReturnYear10	2.45%
Since Inception	rr_AverageAnnualReturnSinceInception	6.09%
Inception Date	rr_AverageAnnualReturnInceptionDate	Aug. 09, 1994
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class C Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[6]
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	1.25%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	3.05%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.75%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	2.30%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	333
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	872
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,536
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	3,312
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	233
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	872
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,536
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	3,312
Label	rr_AverageAnnualReturnLabel	CLASS C Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(3.73%)
5 Years	rr_AverageAnnualReturnYear05	(3.10%)
10 Years	rr_AverageAnnualReturnYear10	2.29%
Since Inception	rr_AverageAnnualReturnSinceInception	4.49%
Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 05, 1995
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class K Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.37%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	2.17%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.62%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.55%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	158
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	619
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,108
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,455
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	158
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	619
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,108
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,455
Label	rr_AverageAnnualReturnLabel	CLASS K Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.96%)
5 Years	rr_AverageAnnualReturnYear05	(2.36%)
10 Years	rr_AverageAnnualReturnYear10	3.07%
Since Inception	rr_AverageAnnualReturnSinceInception	6.48%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 05, 1994
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class R Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%	[7]
Other Expenses	rr_OtherExpensesOverAssets	1.25%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	2.55%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.75%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.80%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	183
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	722
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	1,288
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,829
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	183
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	722
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,288
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,829
Label	rr_AverageAnnualReturnLabel	CLASS R Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(2.31%)
5 Years	rr_AverageAnnualReturnYear05	(2.63%)
10 Years	rr_AverageAnnualReturnYear10
Since Inception	rr_AverageAnnualReturnSinceInception	(1.62%)
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 01, 2006
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class Y Shares
Risk Return [Abstract]	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_MaximumDeferredSalesChargeOverOfferingPrice	none
Management Fees	rr_ManagementFeesOverAssets	0.75%
Distribution and/or Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses Before Fee Waivers and/or Expense Reimbursements	rr_ExpensesOverAssets	1.81%	[3]
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.51%)	[4]
Total Net Annual Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	1.30%	[3],[4]
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	2013-10-31
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	132
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	520
Expense Example, with Redemption, 5 Years	rr_ExpenseExampleYear05	932
Expense Example, with Redemption, 10 Years	rr_ExpenseExampleYear10	2,085
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	132
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	520
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	932
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	2,085
Annual Return 2002	rr_AnnualReturn2002	(19.24%)
Annual Return 2003	rr_AnnualReturn2003	31.22%
Annual Return 2004	rr_AnnualReturn2004	14.12%
Annual Return 2005	rr_AnnualReturn2005	8.07%
Annual Return 2006	rr_AnnualReturn2006	18.17%
Annual Return 2007	rr_AnnualReturn2007	4.74%
Annual Return 2008	rr_AnnualReturn2008	(31.46%)
Annual Return 2009	rr_AnnualReturn2009	13.78%
Annual Return 2010	rr_AnnualReturn2010	11.87%
Annual Return 2011	rr_AnnualReturn2011	(1.77%)
Year to Date Return, Label	rr_YearToDateReturnLabel	YTD through
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	14.64%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2003
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	16.79%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(18.59%)
Label	rr_AverageAnnualReturnLabel	CLASS Y Return Before Taxes
1 Year	rr_AverageAnnualReturnYear01	(1.77%)
5 Years	rr_AverageAnnualReturnYear05	(2.14%)
10 Years	rr_AverageAnnualReturnYear10	3.32%
Since Inception	rr_AverageAnnualReturnSinceInception	6.74%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 05, 1994
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class Y Shares | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions
1 Year	rr_AverageAnnualReturnYear01	(2.07%)
5 Years	rr_AverageAnnualReturnYear05	(2.68%)
10 Years	rr_AverageAnnualReturnYear10	2.78%
Since Inception	rr_AverageAnnualReturnSinceInception	5.46%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 05, 1994
Munder Large-Cap Value Fund (Prospectus Summary) | Munder Large-Cap Value Fund | Class Y Shares | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Label	rr_AverageAnnualReturnLabel	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares
1 Year	rr_AverageAnnualReturnYear01	(1.15%)
5 Years	rr_AverageAnnualReturnYear05	(1.84%)
10 Years	rr_AverageAnnualReturnYear10	2.83%
Since Inception	rr_AverageAnnualReturnSinceInception	5.43%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jul. 05, 1994

[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 through at least October 31, 2013 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 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.

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Munder International Equity Fund (Prospectus Summary) | Munder International Equity Fund

Munder International Equity 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 58 of the
Statement of Additional Information.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees Munder International Equity Fund	Class A Shares		Class B Shares		Class C Shares		Class K Shares	Class Y Shares
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 International Equity Fund		Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
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%	none	none
Other Expenses		1.01%	1.01%	1.01%	1.22%	1.01%
Acquired Fund Fees and Expenses		0.02%	0.02%	0.02%	0.02%	0.02%
Total Annual Fund Operating Expenses	[1]	2.03%	2.78%	2.78%	1.99%	1.78%

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 Equity Fund (USD $)	Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
Expense Example, with Redemption, 1 Year	745	781	381	202	181
Expense Example, with Redemption, 3 Years	1,152	1,162	862	624	560
Expense Example, with Redemption, 5 Years	1,583	1,669	1,469	1,073	964
Expense Example, with Redemption, 10 Years	2,779	2,930	3,109	2,317	2,095

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

Expense Example, No Redemption Munder International Equity Fund (USD $)	Class A Shares	Class B Shares	Class C Shares	Class K Shares	Class Y Shares
Expense Example, No Redemption, 1 Year	745	281	281	202	181
Expense Example, No Redemption, 3 Years	1,152	862	862	624	560
Expense Example, No Redemption, 5 Years	1,583	1,469	1,469	1,073	964
Expense Example, No Redemption, 10 Years	2,779	2,930	3,109	2,317	2,095

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 23%
of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The advisor pursues long-term capital appreciation in the Fund by investing
primarily in foreign securities, i.e., non-U.S. dollar-denominated securities
traded out of the U.S. and U.S. dollar-denominated securities of foreign issuers
traded in the U.S.
  
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, including depositary receipts for such
securities). 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 highly quantitative approach to investing.  Stocks are
selected based on fundamental factors that the advisor believes are effective
predictors of stock performance. In an effort to manage the volatility of the
Fund's performance, country and sector weightings are targeted to remain within
specific ranges as compared to the Morgan Stanley Capital International Europe,
Australasia, Far East (MSCI EAFE) Index.  Accordingly, the Fund may concentrate
its investments within one or more countries or geographic regions; however, the
Fund will be invested in a minimum of ten countries.

Utilizing a variety of quantitative analyses, the advisor seeks to identify
foreign stocks that offer favorable risk-adjusted returns over time. Securities
in which the Fund invests will primarily be from countries represented in the
MSCI EAFE Index universe, but may also include larger-capitalization companies
in other countries. Although Fund tends to invest mostly in larger-capitalization
companies, 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 developed
foreign countries.
  
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.
  
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.
  
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.
  
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.
  
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.
  
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 9/30/12:   7.71%                        
Best Quarter:     32.66% (quarter ended 6/30/09)
Worst Quarter:   -19.59% (quarter ended 9/30/02)

AVERAGE ANNUAL TOTAL RETURNS for periods ended December 31, 2011 (including maximum sales charges)

Average Annual Total Returns Munder International Equity Fund	Label	1 Year	5 Years	10 Years	Since Inception	Inception Date	Average Annual Returns, Since Inception Secondary	Average Annual Returns, Since Inception Tertiary	Average Annual Returns, Since Inception Quaternary	Average Annual Returns, Since Inception Quinary
Class A Shares	CLASS A Return Before Taxes	(19.41%)	(6.58%)	3.44%	4.49%	Nov. 30, 1992
Class B Shares	CLASS B Return Before Taxes	(19.52%)	(6.52%)	3.40%	3.36%	Mar. 09, 1994
Class C Shares	CLASS C Return Before Taxes	(16.16%)	(6.21%)	3.26%	2.92%	Sep. 29, 1995
Class K Shares	CLASS K Return Before Taxes	(14.79%)	(5.52%)	4.03%	4.87%	Nov. 23, 1992
Class Y Shares	CLASS Y Return Before Taxes	(14.51%)	(5.28%)	4.29%	5.11%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions	CLASS Y Return After Taxes on Distributions	(14.56%)	(5.81%)	3.91%	4.29%	Dec. 01, 1991
Class Y Shares After Taxes on Distributions and Sales	CLASS Y Return After Taxes on Distributions and Sale of Fund Shares	(8.56%)	(4.13%)	3.98%	4.34%	Dec. 01, 1991
MSCI EAFE Index (Net Dividends)	MSCI EAFE Index (Net Dividends) (reflects no deductions for fees, expenses or taxes)	(12.14%)	(4.72%)	4.67%	4.80%		5.53%	4.04%	3.75%	5.52%

The index returns from inception for Class Y, A, B, C and K shares are as of
12/1/91, 12/1/92, 3/1/94, 10/1/95 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. 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, 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).