485BPOS

As filed with the Securities and Exchange Commission on February 17, 2012

File No. 033-22821
File No. 811-05601

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933

POST-EFFECTIVE AMENDMENT NO. 55

and

REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940

AMENDMENT NO. 56

SEI INSTITUTIONAL INTERNATIONAL TRUST

(Formerly, "SEI International Trust")
(Exact Name of Registrant as Specified in Charter)

SEI Investments Company
One Freedom Valley Drive
Oaks, Pennsylvania 19456
(Address of Principal Executive Offices)
(610) 676-1000

Timothy D. Barto
SEI Investments Company
One Freedom Valley Drive
Oaks, Pennsylvania 19456
(Name and Address of Agent for Service)

Copy to:

Timothy W. Levin, Esquire
Morgan, Lewis & Bockius LLP
1701 Market Street
Philadelphia, PA 19103

Title of Securities Being Registered. . .Units of Beneficial Interest

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

x  immediately upon filing pursuant to paragraph (b)
o  on [date] pursuant to paragraph (b)
o  60 days after filing pursuant to paragraph (a)(1)
o  on [date] pursuant to paragraph (a)(1)
o  75 days after filing pursuant to paragraph (a)(2)
o  on [date] pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

o  This post-effective Amendment designates a new effective date for a 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 it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, as amended, and has duly caused this Post-Effective Amendment No. 55 to Registration Statement No. 033-22821 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Oaks, Commonwealth of Pennsylvania on the 17th day of February, 2012.

SEI INSTITUTIONAL INTERNATIONAL TRUST
By:	/s/ Robert A. Nesher
Robert A. Nesher
Trustee, President & Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, as amended, this Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the date(s) indicated.

*		Trustee	February 17, 2012
Rosemarie B. Greco
*		Trustee	February 17, 2012
William M. Doran
*		Trustee	February 17, 2012
George J. Sullivan, Jr.
*		Trustee	February 17, 2012
Nina Lesavoy
*		Trustee	February 17, 2012
James M. Williams
*		Trustee	February 17, 2012
Mitchell A. Johnson
*		Trustee	February 17, 2012
Hubert L. Harris, Jr.
/s/ Robert A. Nesher		Trustee, President & Chief	February 17, 2012
Robert A. Nesher		Executive Officer
/s/ Peter A. Rodriguez		Controller & Chief	February 17, 2012
Peter A. Rodriguez		Financial Officer
*By:	/s/ Robert A. Nesher
	Robert A. Nesher
	Attorney-in-Fact

2

INDEX TO EXHIBITS

EXHIBIT NO.	DESCRIPTION OF EXHIBIT	PAGE NO.
	Risk/return summary of each Fund’s prospectus as an Interactive Data File using eXtensible Business Reporting Language (“XBRL”)

3

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	EMERGING MARKETS DEBT FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Maximize total return.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 59% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	59.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Emerging Markets Debt Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities of emerging market issuers. The Fund will invest in debt securities of government, government-related and corporate issuers in emerging market countries, as well as entities organized to restructure the outstanding debt of such issuers. The Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SIMC. The Sub-Advisers will spread the Fund's holdings across a number of countries and industries to limit its exposure to a single emerging market economy and may not invest more than 25% of its assets in any single country. There are no restrictions on the Fund's average portfolio maturity or on the maturity of any specific security. There is no minimum rating standard for the Fund's securities, and the Fund's securities will generally be in the lower or lowest rating categories (including those below the fourth highest rating category by a Nationally Recognized Statistical Rating Organization, commonly referred to as junk bonds). The Sub-Advisers may seek to enhance the Fund's return by actively managing the Fund's foreign currency exposure. In managing the Fund's currency exposure, the Sub-Advisers buy and sell currencies (i.e., take long or short positions) using futures and foreign currency forward contracts. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund may also engage in currency transactions in an attempt to take advantage of certain inefficiencies in the currency exchange market, to increase its exposure to a foreign currency or to shift exposure to foreign currency fluctuations from one currency to another. In managing the Fund's currency exposure for foreign securities, the Sub-Advisers may buy and sell currencies for hedging or for speculative purposes. The Fund may purchase shares of ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Below Investment Grade Securities Risk -- Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Corporate Fixed Income Securities Risk -- Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities or other investments denominated in, and/or receiving revenues in, foreign currencies and the Fund's active management of its currency exposures, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk -- The Fund's use of futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Extension Risk -- The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security's value. Fixed Income Market Risk -- The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Foreign Sovereign Debt Securities Risk -- The risks that (i) the governmental entity that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or interest when it becomes due, due to factors such as debt service burden, political constraints, cash flow problems and other national economic factors; (ii) governments may default on their debt securities, which may require holders of such securities to participate in debt rescheduling or additional lending to defaulting governments; and (iii) there is no bankruptcy proceeding by which defaulted sovereign debt may be collected in whole or in part. Interest Rate Risk -- The risk that the Fund's yield will decline due to falling interest rates. A rise in interest rates typically causes a fall in the value of fixed income securities in which the Fund invests, while a fall in interest rates typically causes a rise in the value of such securities. Investment Style Risk -- The risk that emerging market debt securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk -- The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Non-Diversified Risk -- The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Prepayment Risk -- The risk that with declining interest rates, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Risk, Nondiversified Status	rr_RiskNondiversifiedStatus	The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	As of January 31, 2012, Class G Shares of the Fund had not commenced operations and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, returns for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 17.55% (12/31/2002) Worst Quarter: -13.19% (12/31/2008)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | J.P. Morgan EMBI Global Diversified Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for fees, expenses, or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	7.35%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	7.87%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	10.62%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	9.59%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997	[1]
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(1.00%)
Management Fees	rr_ManagementFeesOverAssets	0.85%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.95%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.05%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	208
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	643
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	1,103
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	2,379
Annual Return 2002	rr_AnnualReturn2002	10.61%
Annual Return 2003	rr_AnnualReturn2003	34.65%
Annual Return 2004	rr_AnnualReturn2004	14.49%
Annual Return 2005	rr_AnnualReturn2005	14.06%
Annual Return 2006	rr_AnnualReturn2006	12.43%
Annual Return 2007	rr_AnnualReturn2007	6.42%
Annual Return 2008	rr_AnnualReturn2008	(19.72%)
Annual Return 2009	rr_AnnualReturn2009	40.53%
Annual Return 2010	rr_AnnualReturn2010	14.47%
Annual Return 2011	rr_AnnualReturn2011	4.74%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2002
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.55%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(13.19%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	4.74%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	7.56%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	12.15%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	10.40%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS G | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	2.52%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	4.96%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	8.98%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	7.03%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS G | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	3.10%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	4.90%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	8.76%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	6.93%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997

[1] Index returns are shown from June 30, 1997.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	EMERGING MARKETS EQUITY FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Capital appreciation.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expenses, Not Correlated to Ratio Due to Acquired Fund Fees	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Emerging Markets Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market issuers. Equity securities may include common stocks, preferred stock and warrants. The Fund normally maintains investments in at least six emerging market countries and does not invest more than 35% of its total assets in any one emerging market country. The Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SIMC. The Fund may purchase shares of ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Currency Risk -- As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Equity Market Risk -- The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Style Risk -- The risk that emerging market equity securities may underperform other segments of the equity markets or the equity markets as a whole. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk -- The small and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may betraded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	As of January 31, 2012, Class G Shares of the Fund had not commenced operations and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, returns for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 34.40% (06/30/2009) Worst Quarter: -27.79% (12/31/2008)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | MSCI Emerging Markets Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	MSCI Emerging Markets Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(18.17%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	2.70%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	14.20%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	7.03%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995	[1]
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(1.25%)
Management Fees	rr_ManagementFeesOverAssets	1.05%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	1.04%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.35%	[2]
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	238
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	733
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	1,255
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	2,686
Annual Return 2002	rr_AnnualReturn2002	(7.99%)
Annual Return 2003	rr_AnnualReturn2003	49.05%
Annual Return 2004	rr_AnnualReturn2004	25.17%
Annual Return 2005	rr_AnnualReturn2005	30.68%
Annual Return 2006	rr_AnnualReturn2006	27.03%
Annual Return 2007	rr_AnnualReturn2007	30.04%
Annual Return 2008	rr_AnnualReturn2008	(52.68%)
Annual Return 2009	rr_AnnualReturn2009	75.07%
Annual Return 2010	rr_AnnualReturn2010	17.70%
Annual Return 2011	rr_AnnualReturn2011	(23.32%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	34.40%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.79%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(23.32%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(0.56%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	10.73%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	4.61%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS G | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(23.16%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(2.00%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	9.57%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	3.96%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS G | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(14.93%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(0.53%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	9.60%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	4.09%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995

[1] Index returns are shown from January 31, 1995.

[2] Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.

XML

SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND

INTERNATIONAL EQUITY FUND

Investment Goal

Long-term capital appreciation.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT INTERNATIONAL EQUITY FUND CLASS G
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	0.75%

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

Annual Fund Operating Expenses	SIT INTERNATIONAL EQUITY FUND CLASS G
Management Fees	0.51%
Distribution (12b-1) Fees	0.25%
Other Expenses	0.76%
Total Annual Fund Operating Expenses	1.52%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT INTERNATIONAL EQUITY FUND CLASS G	Class G Shares	155	480	829	1,813

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 98%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the International Equity Fund will invest at least

80% of its net assets (plus the amount of any borrowings for investment

purposes) in equity securities. Equity securities may include common stocks,

preferred stock and warrants. The Fund will invest primarily in equity

securities of issuers of all capitalization ranges that are located in at least

three countries other than the U.S. It is expected that at least 40% of the

Fund's assets will be invested outside the U.S. The Fund will invest primarily

in companies located in developed countries, but may also invest in companies

located in emerging markets. Generally, the Fund will invest less than 20% of

its assets in emerging markets. The Fund uses a multi-manager approach, relying

upon a number of sub-advisers (each, a Sub-Adviser and collectively, the

Sub-Advisers) with differing investment philosophies to manage portions of the

Fund's portfolio under the general supervision of SEI Investments Management

Corporation, the Fund's adviser (SIMC).



The Fund may invest in futures contracts and forward contracts for hedging

purposes, including to seek to manage the Fund's currency exposure to foreign

securities and mitigate the Fund's overall risk.



The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to

a particular portion of the market while awaiting an opportunity to purchase

securities directly.

Principal Risks

Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities denominated

in, and/or receiving revenues in, foreign currencies, the Fund will be subject

to currency risk. Currency risk is the risk that those currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected.



Derivatives Risk -- The Fund's use of futures and forward contracts is subject to

market risk, leverage risk, correlation risk and liquidity risk. Leverage risk

and liquidity risk are described below. Market risk is the risk that the market

value of an investment may move up and down, sometimes rapidly and

unpredictably. Correlation risk is the risk that changes in the value of the

derivative may not correlate perfectly with the underlying asset, rate or index.

The Fund's use of over-the-counter forward contracts is also subject to credit

risk and valuation risk. Valuation risk is the risk that the derivative may be

difficult to value and/or valued incorrectly. Credit risk is described above.

Each of the above risks could cause the Fund to lose more than the principal

amount invested in a derivative instrument.



Equity Market Risk -- The risk that stock prices will fall over short or extended

periods of time.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Investment Style Risk -- The risk that developed international equity securities

may underperform other segments of the equity markets or the equity markets as a

whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk -- The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Small and Medium Capitalization Risk -- The small and medium capitalization

companies in which the Fund invests may be more vulnerable to adverse business

or economic events than larger, more established companies. In particular, small

and medium capitalization companies may have limited product lines, markets and

financial resources and may depend upon a relatively small management group.

Therefore, small and medium capitalization stocks may be more volatile than

those of larger companies. Small and medium capitalization stocks may be traded

over-the-counter or listed on an exchange.



Loss of money is a risk of investing in the Fund.

Performance Information

As of April 5, 2011, Class G Shares of the Fund had not commenced operations and

did not have a performance history.



The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. Since Class G

Shares are invested in the same portfolio of securities, returns for Class G

Shares will be substantially similar to those of Class A Shares, shown here, and

will differ only to the extent that Class G Shares have higher expenses. The

Fund's past performance (before and after taxes) is not necessarily an

indication of how the Fund will perform in the future.

Best Quarter:   22.98% (06/30/2009)



Worst Quarter: -26.13% (09/30/2008)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT INTERNATIONAL EQUITY FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS G	Class A Shares Return Before Taxes	(13.52%)	(8.82%)	1.66%	2.50%	Dec. 20, 1989
CLASS G After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	(13.64%)	(9.48%)	1.07%	1.60%	Dec. 20, 1989
CLASS G After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	(8.27%)	(7.20%)	1.49%	1.87%	Dec. 20, 1989
MSCI EAFE Index Return	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)	(12.14%)	(4.72%)	4.67%	3.42%	Dec. 20, 1989	[1]

[1] Index returns are shown from December 31, 1989.

XML

SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND

EMERGING MARKETS EQUITY FUND

Investment Goal

Capital appreciation.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT EMERGING MARKETS EQUITY FUND CLASS A
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	1.25%

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

Annual Fund Operating Expenses		SIT EMERGING MARKETS EQUITY FUND CLASS A
Management Fees		1.05%
Distribution (12b-1) Fees		none
Other Expenses		1.04%
Acquired Fund Fees and Expenses (AFFE)		0.01%
Total Annual Fund Operating Expenses	[1]	2.10%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT EMERGING MARKETS EQUITY FUND CLASS A	Class A Shares	213	658	1,129	2,431

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 98%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Emerging Markets Equity Fund will invest at

least 80% of its net assets (plus the amount of any borrowings for investment

purposes) in equity securities of emerging market issuers. Equity securities may

include common stocks, preferred stock and warrants. The Fund normally maintains

investments in at least six emerging market countries and does not invest more

than 35% of its total assets in any one emerging market country. The Fund uses a

multi-manager approach, relying upon a number of Sub-Advisers with differing

investment philosophies to manage portions of the Fund's portfolio under the

general supervision of SIMC.



The Fund may purchase shares of ETFs to gain exposure to a particular portion of

the market while awaiting an opportunity to purchase securities directly.

Principal Risks

Currency Risk -- As a result of the Fund's investments in securities denominated

in, and/or receiving revenues in, foreign currencies, the Fund will be subject

to currency risk. Currency risk is the risk that those currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected.



Equity Market Risk -- The risk that stock prices will fall over short or extended

periods of time.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Investment Style Risk -- The risk that emerging market equity securities may

underperform other segments of the equity markets or the equity markets as a

whole.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Small and Medium Capitalization Risk -- The small and medium capitalization

companies in which the Fund invests may be more vulnerable to adverse business

or economic events than larger, more established companies. In particular, small

and medium capitalization companies may have limited product lines, markets and

financial resources and may depend upon a relatively small management

group. Therefore, small and medium capitalization stocks may be more volatile

than those of larger companies. Small and medium capitalization stocks may be

traded over the counter or listed on an exchange.



Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. The Fund's past

performance (before and after taxes) is not necessarily an indication of how the

Fund will perform in the future. For current performance information, please

call 1-800-DIAL-SEI.

Best Quarter:   34.40% (06/30/09)



Worst Quarter: -27.79% (12/31/08)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT EMERGING MARKETS EQUITY FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS A	Class A Shares Return Before Taxes	(23.32%)	(0.56%)	10.73%	4.61%	Jan. 17, 1995
CLASS A After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	(23.16%)	(2.00%)	9.57%	3.96%	Jan. 17, 1995
CLASS A After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	(14.93%)	(0.53%)	9.60%	4.09%	Jan. 17, 1995
MSCI Emerging Markets Index Return	MSCI Emerging Markets Index Return (reflects no deduction for fees, expenses or taxes)	(18.17%)	2.70%	14.20%	7.03%	Jan. 17, 1995	[1]

[1] Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements (or the "Financial Highlights" section in the prospectus) because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.

[1] Index returns are shown from January 31, 1995.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	INTERNATIONAL EQUITY FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Long-term capital appreciation.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the International Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities. Equity securities may include common stocks, preferred stock and warrants. The Fund will invest primarily in equity securities of issuers of all capitalization ranges that are located in at least three countries other than the U.S. It is expected that at least 40% of the Fund's assets will be invested outside the U.S. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. Generally, the Fund will invest less than 20% of its assets in emerging markets. The Fund uses a multi-manager approach, relying upon a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC). The Fund may invest in futures contracts and forward contracts for hedging purposes, including to seek to manage the Fund's currency exposure to foreign securities and mitigate the Fund's overall risk. The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Derivatives Risk -- The Fund's use of futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk -- The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Style Risk -- The risk that developed international equity securities may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk -- The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk -- The small and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may be traded over-the-counter or listed on an exchange. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	As of April 5, 2011, Class G Shares of the Fund had not commenced operations and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, returns for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 22.98% (06/30/2009) Worst Quarter: -26.13% (09/30/2008)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | MSCI EAFE Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(12.14%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(4.72%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	4.67%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	3.42%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989	[1]
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(0.75%)
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.76%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.52%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	155
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	480
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	829
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	1,813
Annual Return 2002	rr_AnnualReturn2002	(16.98%)
Annual Return 2003	rr_AnnualReturn2003	31.88%
Annual Return 2004	rr_AnnualReturn2004	18.63%
Annual Return 2005	rr_AnnualReturn2005	14.28%
Annual Return 2006	rr_AnnualReturn2006	26.00%
Annual Return 2007	rr_AnnualReturn2007	6.96%
Annual Return 2008	rr_AnnualReturn2008	(50.39%)
Annual Return 2009	rr_AnnualReturn2009	24.00%
Annual Return 2010	rr_AnnualReturn2010	10.74%
Annual Return 2011	rr_AnnualReturn2011	(13.52%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	22.98%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(26.13%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.52%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(8.82%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.66%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	2.50%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS G | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.64%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(9.48%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.07%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.60%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS G | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(8.27%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(7.20%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.49%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.87%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989

[1] Index returns are shown from December 31, 1989.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	EMERGING MARKETS DEBT FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Maximize total return.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 59% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	59.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Emerging Markets Debt Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities of emerging market issuers. The Fund will invest in debt securities of government, government-related and corporate issuers in emerging market countries, as well as entities organized to restructure the outstanding debt of such issuers. The Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SIMC. The Sub-Advisers will spread the Fund's holdings across a number of countries and industries to limit its exposure to a single emerging market economy and may not invest more than 25% of its assets in any single country. There are no restrictions on the Fund's average portfolio maturity or on the maturity of any specific security. There is no minimum rating standard for the Fund's securities, and the Fund's securities will generally be in the lower or lowest rating categories (including those below the fourth highest rating category by a Nationally Recognized Statistical Rating Organization, commonly referred to as junk bonds). The Sub-Advisers may seek to enhance the Fund's return by actively managing the Fund's foreign currency exposure. In managing the Fund's currency exposure, the Sub-Advisers buy and sell currencies (i.e., take long or short positions) using futures and foreign currency forward contracts. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund may also engage in currency transactions in an attempt to take advantage of certain inefficiencies in the currency exchange market, to increase its exposure to a foreign currency or to shift exposure to foreign currency fluctuations from one currency to another. In managing the Fund's currency exposure for foreign securities, the Sub-Advisers may buy and sell currencies for hedging or for speculative purposes. The Fund may purchase shares of ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Below Investment Grade Securities Risk -- Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Corporate Fixed Income Securities Risk -- Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities or other investments denominated in, and/or receiving revenues in, foreign currencies and the Fund's active management of its currency exposures, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates mayfluctuate in response to, among other things, changes in interest rates,intervention (or failure to intervene) by U.S. or foreign governments, centralbanks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk -- The Fund's use of futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Extension Risk -- The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security's value. Fixed Income Market Risk -- The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Foreign Sovereign Debt Securities Risk -- The risks that (i) the governmental entity that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or interest when it becomes due, due to factors such as debt service burden, political constraints, cash flow problems and other national economic factors; (ii) governments may default on their debt securities, which may require holders of such securities to participate in debt rescheduling or additional lending to defaulting governments; and (iii) there is no bankruptcy proceeding by which defaulted sovereign debt may be collected in whole or in part. Interest Rate Risk -- The risk that the Fund's yield will decline due to falling interest rates. A rise in interest rates typically causes a fall in the value of fixed income securities in which the Fund invests, while a fall in interest rates typically causes a rise in the value of such securities. Investment Style Risk -- The risk that emerging market debt securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk -- The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Non-Diversified Risk -- The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers and may experience increased volatility due to its investments in those securities. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Prepayment Risk -- The risk that with declining interest rates, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Risk, Nondiversified Status	rr_RiskNondiversifiedStatus	The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers and may experience increased volatility due to its investments in those securities.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Availability Phone Number	rr_PerformanceAvailabilityPhone	1-800-DIAL-SEI
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 17.55% (12/31/02) Worst Quarter: -13.19% (12/31/08)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | J.P. Morgan EMBI Global Diversified Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	7.35%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	7.87%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	10.62%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	9.59%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997	[1]
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(1.00%)
Management Fees	rr_ManagementFeesOverAssets	0.85%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.95%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.80%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	183
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	566
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	975
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	2,116
Annual Return 2002	rr_AnnualReturn2002	10.61%
Annual Return 2003	rr_AnnualReturn2003	34.65%
Annual Return 2004	rr_AnnualReturn2004	14.49%
Annual Return 2005	rr_AnnualReturn2005	14.06%
Annual Return 2006	rr_AnnualReturn2006	12.43%
Annual Return 2007	rr_AnnualReturn2007	6.42%
Annual Return 2008	rr_AnnualReturn2008	(19.72%)
Annual Return 2009	rr_AnnualReturn2009	40.53%
Annual Return 2010	rr_AnnualReturn2010	14.47%
Annual Return 2011	rr_AnnualReturn2011	4.74%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2002
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.55%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(13.19%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	4.74%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	7.56%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	12.15%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	10.40%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS A | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	2.52%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	4.96%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	8.98%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	7.03%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS A | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	3.10%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	4.90%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	8.76%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	6.93%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 26, 1997

[1] Index returns are shown from June 30, 1997.

XML

SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND

EMERGING MARKETS EQUITY FUND

Investment Goal

Capital appreciation.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT EMERGING MARKETS EQUITY FUND CLASS G
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	1.25%

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

Annual Fund Operating Expenses		SIT EMERGING MARKETS EQUITY FUND CLASS G
Management Fees		1.05%
Distribution (12b-1) Fees		0.25%
Other Expenses		1.04%
Acquired Fund Fees and Expenses (AFFE)		0.01%
Total Annual Fund Operating Expenses	[1]	2.35%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT EMERGING MARKETS EQUITY FUND CLASS G	Class G Shares	238	733	1,255	2,686

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 98%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Emerging Markets Equity Fund will invest at

least 80% of its net assets (plus the amount of any borrowings for investment

purposes) in equity securities of emerging market issuers. Equity securities may

include common stocks, preferred stock and warrants. The Fund normally maintains

investments in at least six emerging market countries and does not invest more

than 35% of its total assets in any one emerging market country. The Fund uses a

multi-manager approach, relying upon a number of Sub-Advisers with differing

investment philosophies to manage portions of the Fund's portfolio under the

general supervision of SIMC.



The Fund may purchase shares of ETFs to gain exposure to a particular portion of

the market while awaiting an opportunity to purchase securities directly.

Principal Risks

Currency Risk -- As a result of the Fund's investments in securities denominated

in, and/or receiving revenues in, foreign currencies, the Fund will be subject

to currency risk. Currency risk is the risk that those currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected.



Equity Market Risk -- The risk that stock prices will fall over short or extended

periods of time.



Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Investment Style Risk -- The risk that emerging market equity securities may

underperform other segments of the equity markets or the equity markets as a

whole.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Small and Medium Capitalization Risk -- The small and medium capitalization

companies in which the Fund invests may be more vulnerable to adverse business

or economic events than larger, more established companies. In particular, small

and medium capitalization companies may have limited product lines, markets and

financial resources and may depend upon a relatively small management group.

Therefore, small and medium capitalization stocks may be more volatile than those

of larger companies. Small and medium capitalization stocks may betraded over the

counter or listed on an exchange.



Loss of money is a risk of investing in the Fund.

Performance Information

As of January 31, 2012, Class G Shares of the Fund had not commenced operations

and did not have a performance history.



The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. Since Class G

Shares are invested in the same portfolio of securities, returns for Class G

Shares will be substantially similar to those of Class A Shares, shown here, and

will differ only to the extent that Class G Shares have higher expenses. The

Fund's past performance (before and after taxes) is not necessarily an

indication of how the Fund will perform in the future.

Best Quarter:   34.40% (06/30/2009)



Worst Quarter: -27.79% (12/31/2008)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT EMERGING MARKETS EQUITY FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS G	Class A Shares Return Before Taxes	(23.32%)	(0.56%)	10.73%	4.61%	Jan. 17, 1995
CLASS G After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	(23.16%)	(2.00%)	9.57%	3.96%	Jan. 17, 1995
CLASS G After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	(14.93%)	(0.53%)	9.60%	4.09%	Jan. 17, 1995
MSCI Emerging Markets Index Return	MSCI Emerging Markets Index Return (reflects no deduction for fees, expenses or taxes)	(18.17%)	2.70%	14.20%	7.03%	Jan. 17, 1995	[1]

[1] Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.

[1] Index returns are shown from January 31, 1995.

XML

SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND

INTERNATIONAL EQUITY FUND

Investment Goal

Long-term capital appreciation.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT INTERNATIONAL EQUITY FUND CLASS I
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	0.75%

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

Annual Fund Operating Expenses	SIT INTERNATIONAL EQUITY FUND CLASS I
Management Fees	0.51%
Distribution (12b-1) Fees	none
Other Expenses	1.01%
Total Annual Fund Operating Expenses	1.52%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT INTERNATIONAL EQUITY FUND CLASS I	Class I Shares	155	480	829	1,813

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 98%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the International Equity Fund will invest at least

80% of its net assets (plus the amount of any borrowings for investment

purposes) in equity securities. Equity securities may include common stocks,

preferred stock and warrants. The Fund will invest primarily in equity

securities of issuers of all capitalization ranges that are located in at least

three countries other than the U.S. It is expected that at least 40% of the

Fund's assets will be invested outside the U.S. The Fund will invest primarily

in companies located in developed countries, but may also invest in companies

located in emerging markets. Generally, the Fund will invest less than 20% of

its assets in emerging markets. The Fund uses a multi-manager approach, relying

upon a number of sub-advisers (each, a Sub-Adviser and collectively, the

Sub-Advisers) with differing investment philosophies to manage portions of the

Fund's portfolio under the general supervision of SEI Investments Management

Corporation, the Fund's adviser (SIMC).



The Fund may invest in futures contracts and forward contracts for hedging

purposes, including to seek to manage the Fund's currency exposure to foreign

securities and mitigate the Fund's overall risk.



The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to

a particular portion of the market while awaiting an opportunity to purchase

securities directly.

Principal Risks

Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities denominated

in, and/or receiving revenues in, foreign currencies, the Fund will be subject

to currency risk. Currency risk is the risk that those currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected.



Derivatives Risk -- The Fund's use of futures and forward contracts is subject to

market risk, leverage risk, correlation risk and liquidity risk. Leverage risk

and liquidity risk are described below. Market risk is the risk that the market

value of an investment may move up and down, sometimes rapidly and

unpredictably. Correlation risk is the risk that changes in the value of the

derivative may not correlate perfectly with the underlying asset, rate or index.

The Fund's use of over-the-counter forward contracts is also subject to credit

risk and valuation risk. Valuation risk is the risk that the derivative may be

difficult to value and/or valued incorrectly. Credit risk is described above.

Each of the above risks could cause the Fund to lose more than the principal

amount invested in a derivative instrument.



Equity Market Risk -- The risk that stock prices will fall over short or extended

periods of time.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Investment Style Risk -- The risk that developed international equity securities

may underperform other segments of the equity markets or the equity markets as a

whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk -- The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Small and Medium Capitalization Risk -- The small and medium capitalization

companies in which the Fund invests may be more vulnerable to adverse business

or economic events than larger, more established companies. In particular, small

and medium capitalization companies may have limited product lines, markets and

financial resources and may depend upon a relatively small management group.

Therefore, small and medium capitalization stocks may be more volatile than

those of larger companies. Small and medium capitalization stocks may be traded

over-the-counter or listed on an exchange.



Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and performance table below provide some indication of the risks

of investing in the Fund by showing changes in the Fund's performance from year

to year for the past ten calendar years and by showing how the Fund's average

annual returns for 1, 5 and 10 years, and since the Fund's inception, compared

with those of a broad measure of market performance. The Fund's past performance

(before and after taxes) is not necessarily an indication of how the Fund will

perform in the future. The Fund's Class I Shares commenced operations on January

4, 2002. Therefore, performance for the periods prior to January 4, 2002 is

calculated using the performance of the Fund's Class A Shares adjusted for the

higher expenses of the Class I Shares. For current performance information,

please call 1-800-DIAL-SEI.

Best Quarter:   22.94% (06/30/2009)



Worst Quarter: -26.25% (09/30/2008)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT INTERNATIONAL EQUITY FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS I	Class I Shares Return Before Taxes	(13.61%)	(9.03%)	1.44%	2.25%	Dec. 20, 1989
CLASS I After Taxes on Distributions	Class I Shares Return After Taxes on Distributions	(13.68%)	(9.64%)	0.90%	1.29%	Dec. 20, 1989
CLASS I After Taxes on Distributions and Sales	Class I Shares Return After Taxes on Distributions and Sale of Fund Shares	(8.39%)	(7.35%)	1.32%	1.58%	Dec. 20, 1989
MSCI EAFE Index Return	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)	(12.14%)	(4.72%)	4.67%	3.42%	Dec. 20, 1989	[1]

[1] Index returns are shown from December 31, 1989.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	INTERNATIONAL EQUITY FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Long-term capital appreciation.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the International Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities. Equity securities may include common stocks, preferred stock and warrants. The Fund will invest primarily in equity securities of issuers of all capitalization ranges that are located in at least three countries other than the U.S. It is expected that at least 40% of the Fund's assets will be invested outside the U.S. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. Generally, the Fund will invest less than 20% of its assets in emerging markets. The Fund uses a multi-manager approach, relying upon a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC). The Fund may invest in futures contracts and forward contracts for hedging purposes, including to seek to manage the Fund's currency exposure to foreign securities and mitigate the Fund's overall risk. The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase shares directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Derivatives Risk -- The Fund's use of futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk -- The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Style Risk -- The risk that developed international equity securities may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk -- The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk -- The small and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may be traded over-the-counter or listed on an exchange. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Availability Phone Number	rr_PerformanceAvailabilityPhone	1-800-DIAL-SEI
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 22.98% (06/30/09) Worst Quarter: -26.13% (09/30/08)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | MSCI EAFE Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(12.14%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(4.72%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	4.67%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	3.42%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989	[1]
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(0.75%)
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.76%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.27%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	129
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	403
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	697
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	1,534
Annual Return 2002	rr_AnnualReturn2002	(16.98%)
Annual Return 2003	rr_AnnualReturn2003	31.88%
Annual Return 2004	rr_AnnualReturn2004	18.63%
Annual Return 2005	rr_AnnualReturn2005	14.28%
Annual Return 2006	rr_AnnualReturn2006	26.00%
Annual Return 2007	rr_AnnualReturn2007	6.96%
Annual Return 2008	rr_AnnualReturn2008	(50.39%)
Annual Return 2009	rr_AnnualReturn2009	24.00%
Annual Return 2010	rr_AnnualReturn2010	10.74%
Annual Return 2011	rr_AnnualReturn2011	(13.52%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	22.98%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(26.13%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.52%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(8.82%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.66%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	2.50%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS A | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.64%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(9.48%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.07%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.60%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS A | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(8.27%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(7.20%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.49%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.87%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989

[1] Index returns are shown from December 31, 1989.

XML

SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND

INTERNATIONAL EQUITY FUND

Investment Goal

Long-term capital appreciation.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT INTERNATIONAL EQUITY FUND CLASS A
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	0.75%

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

Annual Fund Operating Expenses	SIT INTERNATIONAL EQUITY FUND CLASS A
Management Fees	0.51%
Distribution (12b-1) Fees	none
Other Expenses	0.76%
Total Annual Fund Operating Expenses	1.27%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT INTERNATIONAL EQUITY FUND CLASS A	Class A Shares	129	403	697	1,534

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 98%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the International Equity Fund will invest at least

80% of its net assets (plus the amount of any borrowings for investment

purposes) in equity securities. Equity securities may include common stocks,

preferred stock and warrants. The Fund will invest primarily in equity

securities of issuers of all capitalization ranges that are located in at least

three countries other than the U.S. It is expected that at least 40% of the

Fund's assets will be invested outside the U.S. The Fund will invest primarily

in companies located in developed countries, but may also invest in companies

located in emerging markets. Generally, the Fund will invest less than 20% of

its assets in emerging markets. The Fund uses a multi-manager approach, relying

upon a number of sub-advisers (each, a Sub-Adviser and collectively, the

Sub-Advisers) with differing investment philosophies to manage portions of the

Fund's portfolio under the general supervision of SEI Investments Management

Corporation, the Fund's adviser (SIMC).



The Fund may invest in futures contracts and forward contracts for hedging

purposes, including to seek to manage the Fund's currency exposure to foreign

securities and mitigate the Fund's overall risk.



The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to

a particular portion of the market while awaiting an opportunity to purchase

shares directly.

Principal Risks

Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities denominated

in, and/or receiving revenues in, foreign currencies, the Fund will be subject

to currency risk. Currency risk is the risk that those currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected.



Derivatives Risk -- The Fund's use of futures and forward contracts is subject to

market risk, leverage risk, correlation risk and liquidity risk. Leverage risk

and liquidity risk are described below. Market risk is the risk that the market

value of an investment may move up and down, sometimes rapidly and

unpredictably. Correlation risk is the risk that changes in the value of the

derivative may not correlate perfectly with the underlying asset, rate or index.

The Fund's use of over-the-counter forward contracts is also subject to credit

risk and valuation risk. Valuation risk is the risk that the derivative may be

difficult to value and/or valued incorrectly. Credit risk is described above.

Each of the above risks could cause the Fund to lose more than the principal

amount invested in a derivative instrument.



Equity Market Risk -- The risk that stock prices will fall over short or extended

periods of time.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Investment Style Risk -- The risk that developed international equity securities

may underperform other segments of the equity markets or the equity markets as a

whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk -- The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Small and Medium Capitalization Risk -- The small and medium capitalization

companies in which the Fund invests may be more vulnerable to adverse business

or economic events than larger, more established companies. In particular, small

and medium capitalization companies may have limited product lines, markets and

financial resources and may depend upon a relatively small management group.

Therefore, small and medium capitalization stocks may be more volatile than

those of larger companies. Small and medium capitalization stocks may be traded

over-the-counter or listed on an exchange.



Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. The Fund's past

performance (before and after taxes) is not necessarily an indication of how the

Fund will perform in the future. For current performance information, please

call 1-800-DIAL-SEI.

Best Quarter:   22.98% (06/30/09)



Worst Quarter: -26.13% (09/30/08)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT INTERNATIONAL EQUITY FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS A	Class A Shares Return Before Taxes	(13.52%)	(8.82%)	1.66%	2.50%	Dec. 20, 1989
CLASS A After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	(13.64%)	(9.48%)	1.07%	1.60%	Dec. 20, 1989
CLASS A After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	(8.27%)	(7.20%)	1.49%	1.87%	Dec. 20, 1989
MSCI EAFE Index Return	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)	(12.14%)	(4.72%)	4.67%	3.42%	Dec. 20, 1989	[1]

[1] Index returns are shown from December 31, 1989.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	INTERNATIONAL FIXED INCOME FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Capital appreciation and current income.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 119% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	119.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the International Fixed Income Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities. The Fund will invest primarily in investment grade foreign government and corporate fixed income securities, as well as foreign mortgage-backed and/or asset-backed fixed income securities, of issuers located in at least three countries other than the U.S. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. Other fixed income securities in which the Fund may invest include: (i) securities issued or guaranteed by the U.S. Government and its agencies and instrumentalities and obligations of U.S. commercial banks, such as certificates of deposit, time deposits, bankers' acceptances and bank notes; and (ii) U.S. corporate debt securities and mortgage-backed and asset-backed securities. The Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SIMC. In selecting investments for the Fund, the Sub-Advisers choose investment grade securities issued by corporations and governments located in various developed foreign countries, looking for opportunities to achieve capital appreciation and gain, as well as current income. There are no restrictions on the Fund's average portfolio maturity or on the maturity of any specific security. The Sub-Advisers may seek to enhance the Fund's return by actively managing the Fund's foreign currency exposure. In managing the Fund's currency exposure, the Sub-Advisers buy and sell currencies (i.e., take long or short positions) using futures and foreign currency forward contracts. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund may also engage in currency transactions in an attempt to take advantage of certain inefficiencies in the currency exchange market, to increase its exposure to a foreign currency or to shift exposure to foreign currency fluctuations from one currency to another. In managing the Fund's currency exposure for foreign securities, the Sub-Advisers may buy and sell currencies for hedging or for speculative purposes. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures, forwards and swaps are used to synthetically obtain exposure to the securities identified above or baskets of such securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. The Fund will also invest in securities rated below investment grade (junk bonds). However, in general, the Fund will purchase bonds with a rating of CCC or above. The Fund also invests a portion of its assets in bank loans, which are generally non-investment grade floating rate instruments. The Fund may invest in bank loans in the form of participations in the loans (participations) and assignments of all or a portion of the loans from third parties (assignments). The Fund may purchase shares of ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Asset-Backed Securities Risk -- Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities, and asset-backed securities may not have the benefit of any security interest in the related assets. Bank Loans Risk -- With respect to bank loans, the Fund will assume the credit risk of both the borrower and the lender that is selling the participation. The Fund may also have difficulty disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Below Investment Grade Securities Risk -- Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative. Corporate Fixed Income Securities Risk -- Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities or other investments denominated in, and/or receiving revenues in, foreign currencies and the Fund's active management of its currency exposures, the Fund will be subject to currency risk. Currency risk is the risk that foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk -- The Fund's use of swaps, futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of swaps and over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Extension Risk -- The risk that rising interest rates may extend the duration of a fixed income security, typically reducing the security's value. Fixed Income Market Risk -- The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Interest Rate Risk -- The risk that the Fund's yield will decline due to falling interest rates. A rise in interest rates typically causes a fall in the value of fixed income securities in which the Fund invests, while a fall in interest rates typically causes a rise in the value of such securities. Investment Style Risk -- The risk that developed international fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-Backed Securities Risk -- Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Non-Diversified Risk -- The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers and may experience increased volatility due to its investments in those securities. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Prepayment Risk -- The risk that with declining interest rates, fixed income securities with stated interest rates may have the principal paid earlier than expected, requiring the Fund to invest the proceeds at generally lower interest rates. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Risk, Nondiversified Status	rr_RiskNondiversifiedStatus	The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers and may experience increased volatility due to its investments in those securities.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Availability Phone Number	rr_PerformanceAvailabilityPhone	1-800-DIAL-SEI
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 13.29% (06/30/02) Worst Quarter: -3.03% (06/30/05)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND | Barclays Capital Global Aggregate Ex-U.S. Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Barclays Capital Global Aggregate Ex-U.S. Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	3.94%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	4.33%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	4.47%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	6.15%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 01, 1993	[1]
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(1.00%)
Management Fees	rr_ManagementFeesOverAssets	0.30%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.91%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.21%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	123
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	384
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	665
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	1,466
Annual Return 2002	rr_AnnualReturn2002	19.54%
Annual Return 2003	rr_AnnualReturn2003	18.00%
Annual Return 2004	rr_AnnualReturn2004	11.47%
Annual Return 2005	rr_AnnualReturn2005	(9.85%)
Annual Return 2006	rr_AnnualReturn2006	2.25%
Annual Return 2007	rr_AnnualReturn2007	2.32%
Annual Return 2008	rr_AnnualReturn2008	(5.22%)
Annual Return 2009	rr_AnnualReturn2009	11.01%
Annual Return 2010	rr_AnnualReturn2010	5.33%
Annual Return 2011	rr_AnnualReturn2011	3.51%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2002
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	13.29%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2005
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(3.03%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	3.51%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	3.26%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	5.46%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	4.52%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 01, 1993
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND | CLASS A | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	2.59%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	1.81%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	3.77%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	2.94%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 01, 1993
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND | CLASS A | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	2.28%
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	1.92%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	3.73%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	2.94%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Sep. 01, 1993

[1] Index returns are shown from September 30, 1993.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	INTERNATIONAL EQUITY FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Long-term capital appreciation.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the International Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities. Equity securities may include common stocks, preferred stock and warrants. The Fund will invest primarily in equity securities of issuers of all capitalization ranges that are located in at least three countries other than the U.S. It is expected that at least 40% of the Fund's assets will be invested outside the U.S. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. Generally, the Fund will invest less than 20% of its assets in emerging markets. The Fund uses a multi-manager approach, relying upon a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC). The Fund may invest in futures contracts and forward contracts for hedging purposes, including to seek to manage the Fund's currency exposure to foreign securities and mitigate the Fund's overall risk. The Fund may purchase shares of exchange-traded funds (ETFs) to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Credit Risk -- The risk that the issuer of a security or the counterparty to a contract will default or otherwise become unable to honor a financial obligation. Currency Risk -- As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Derivatives Risk -- The Fund's use of futures and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of over-the-counter forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of the above risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk -- The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Style Risk -- The risk that developed international equity securities may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk -- The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk -- The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk -- The small and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may be traded over-the-counter or listed on an exchange. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	The bar chart and performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. The Fund's Class I Shares commenced operations on January 4, 2002. Therefore, performance for the periods prior to January 4, 2002 is calculated using the performance of the Fund's Class A Shares adjusted for the higher expenses of the Class I Shares. For current performance information, please call 1-800-DIAL-SEI.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Availability Website Address	rr_PerformanceAvailabilityWebSiteAddress	1-800-DIAL-SEI
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 22.94% (06/30/2009) Worst Quarter: -26.25% (09/30/2008)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | MSCI EAFE Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(12.14%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(4.72%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	4.67%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	3.42%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989	[1]
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS I
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(0.75%)
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.52%
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	155
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	480
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	829
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	1,813
Annual Return 2002	rr_AnnualReturn2002	(17.04%)
Annual Return 2003	rr_AnnualReturn2003	31.62%
Annual Return 2004	rr_AnnualReturn2004	18.37%
Annual Return 2005	rr_AnnualReturn2005	13.95%
Annual Return 2006	rr_AnnualReturn2006	25.71%
Annual Return 2007	rr_AnnualReturn2007	6.69%
Annual Return 2008	rr_AnnualReturn2008	(50.47%)
Annual Return 2009	rr_AnnualReturn2009	23.62%
Annual Return 2010	rr_AnnualReturn2010	10.38%
Annual Return 2011	rr_AnnualReturn2011	(13.61%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	22.94%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(26.25%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class I Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.61%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(9.03%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.44%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	2.25%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS I | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class I Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(13.68%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(9.64%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	0.90%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.29%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS I | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class I Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(8.39%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(7.35%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	1.32%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	1.58%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Dec. 20, 1989

[1] Index returns are shown from December 31, 1989.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Sep. 30, 2011
Registrant Name	dei_EntityRegistrantName	SEI INSTITUTIONAL INTERNATIONAL TRUST
Central Index Key	dei_EntityCentralIndexKey	0000835597
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jan. 27, 2012
Document Effective Date	dei_DocumentEffectiveDate	Jan. 27, 2012
SIT INTERNATIONAL EQUITY FUND (First Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SEITX
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SIEMX
SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SEFIX
SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SITEX
SIT INTERNATIONAL EQUITY FUND (Second Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS I
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	SEEIX
SIT INTERNATIONAL EQUITY FUND (Third Prospectus Summary) | SIT INTERNATIONAL EQUITY FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	N/A
SIT EMERGING MARKETS EQUITY FUND (Second Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	N/A
SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND | CLASS G
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	N/A

XML

SIT EMERGING MARKETS DEBT FUND (First Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND

EMERGING MARKETS DEBT FUND

Investment Goal

Maximize total return.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT EMERGING MARKETS DEBT FUND CLASS A
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	1.00%

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

Annual Fund Operating Expenses	SIT EMERGING MARKETS DEBT FUND CLASS A
Management Fees	0.85%
Distribution (12b-1) Fees	none
Other Expenses	0.95%
Total Annual Fund Operating Expenses	1.80%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT EMERGING MARKETS DEBT FUND CLASS A	Class A Shares	183	566	975	2,116

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 59%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Emerging Markets Debt Fund will invest at least

80% of its net assets (plus the amount of any borrowings for investment

purposes) in fixed income securities of emerging market issuers. The Fund will

invest in debt securities of government, government-related and corporate

issuers in emerging market countries, as well as entities organized to

restructure the outstanding debt of such issuers. The Fund uses a multi-manager

approach, relying upon a number of Sub-Advisers with differing investment

philosophies to manage portions of the Fund's portfolio under the general

supervision of SIMC. The Sub-Advisers will spread the Fund's holdings across a

number of countries and industries to limit its exposure to a single emerging

market economy and may not invest more than 25% of its assets in any single

country. There are no restrictions on the Fund's average portfolio maturity or

on the maturity of any specific security. There is no minimum rating standard

for the Fund's securities, and the Fund's securities will generally be in the

lower or lowest rating categories (including those below the fourth highest

rating category by a Nationally Recognized Statistical Rating Organization,

commonly referred to as junk bonds).



The Sub-Advisers may seek to enhance the Fund's return by actively managing the

Fund's foreign currency exposure. In managing the Fund's currency exposure, the

Sub-Advisers buy and sell currencies (i.e., take long or short positions) using

futures and foreign currency forward contracts. The Fund may take long and short

positions in foreign currencies in excess of the value of the Fund's assets

denominated in a particular currency or when the Fund does not own assets

denominated in that currency. The Fund may also engage in currency transactions

in an attempt to take advantage of certain inefficiencies in the currency

exchange market, to increase its exposure to a foreign currency or to shift

exposure to foreign currency fluctuations from one currency to another. In

managing the Fund's currency exposure for foreign securities, the Sub-Advisers

may buy and sell currencies for hedging or for speculative purposes.



The Fund may purchase shares of ETFs to gain exposure to a particular portion of

the market while awaiting an opportunity to purchase securities directly.

Principal Risks

Below Investment Grade Securities Risk -- Fixed income securities rated below

investment grade (junk bonds) involve greater risks of default or downgrade and

are more volatile than investment grade securities because the prospect for

repayment of principal and interest of many of these securities is speculative.



Corporate Fixed Income Securities Risk -- Corporate fixed income securities

respond to economic developments, especially changes in interest rates, as well

as perceptions of the creditworthiness and business prospects of individual

issuers.



Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities or other

investments denominated in, and/or receiving revenues in, foreign currencies and

the Fund's active management of its currency exposures, the Fund will be subject

to currency risk. Currency risk is the risk that foreign currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely affected.

Due to the Fund's active positions in currencies, it will be subject to the risk

that currency exchange rates mayfluctuate in response to, among other things, changes

in interest rates,intervention (or failure to intervene) by U.S. or foreign governments,

centralbanks or supranational entities, or by the imposition of currency controls or

other political developments in the United States or abroad.



Derivatives Risk -- The Fund's use of futures and forward contracts is subject to

market risk, leverage risk, correlation risk and liquidity risk. Leverage risk

and liquidity risk are described below. Market risk is the risk that the market

value of an investment may move up and down, sometimes rapidly and unpredictably.

Correlation risk is the risk that changes in the value of the derivative may not

correlate perfectly with the underlying asset, rate or index. The Fund's use of

over-the-counter forward contracts is also subject to credit risk and valuation risk.

Valuation risk is the risk that the derivative may be difficult to value and/or valued

incorrectly. Credit risk is described above. Each of the above risks could cause the

Fund to lose more than the principal amount invested in a derivative instrument.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Extension Risk -- The risk that rising interest rates may extend the duration of

a fixed income security, typically reducing the security's value.



Fixed Income Market Risk -- The prices of the Fund's fixed income securities

respond to economic developments, particularly interest rate changes, as well as

to perceptions about the creditworthiness of individual issuers, including

governments and their agencies. In the case of foreign securities, price

fluctuations will reflect international economic and political events, as well

as changes in currency valuations relative to the U.S. dollar.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Foreign Sovereign Debt Securities Risk -- The risks that (i) the governmental

entity that controls the repayment of sovereign debt may not be willing or able

to repay the principal and/or interest when it becomes due, due to factors such

as debt service burden, political constraints, cash flow problems and other

national economic factors; (ii) governments may default on their debt

securities, which may require holders of such securities to participate in debt

rescheduling or additional lending to defaulting governments; and (iii) there is

no bankruptcy proceeding by which defaulted sovereign debt may be collected in

whole or in part.



Interest Rate Risk -- The risk that the Fund's yield will decline due to falling

interest rates. A rise in interest rates typically causes a fall in the value of

fixed income securities in which the Fund invests, while a fall in interest

rates typically causes a rise in the value of such securities.



Investment Style Risk -- The risk that emerging market debt securities may

underperform other segments of the fixed income markets or the fixed income

markets as a whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk -- The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Non-Diversified Risk -- The Fund is non-diversified, which means that it may

invest in the securities of relatively few issuers. As a result, the Fund may be

more susceptible to a single adverse economic or political occurrence affecting

one or more of these issuers and may experience increased volatility due to its

investments in those securities.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Prepayment Risk -- The risk that with declining interest rates, fixed income

securities with stated interest rates may have the principal paid earlier than

expected, requiring the Fund to invest the proceeds at generally lower interest

rates.



Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. The Fund's past

performance (before and after taxes) is not necessarily an indication of how the

Fund will perform in the future. For current performance information, please

call 1-800-DIAL-SEI.

Best Quarter:   17.55% (12/31/02)



Worst Quarter: -13.19% (12/31/08)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT EMERGING MARKETS DEBT FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS A	Class A Shares Return Before Taxes	4.74%	7.56%	12.15%	10.40%	Jun. 26, 1997
CLASS A After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	2.52%	4.96%	8.98%	7.03%	Jun. 26, 1997
CLASS A After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	3.10%	4.90%	8.76%	6.93%	Jun. 26, 1997
J.P. Morgan EMBI Global Diversified Index Return	J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for fees, expenses or taxes)	7.35%	7.87%	10.62%	9.59%	Jun. 26, 1997	[1]

[1] Index returns are shown from June 30, 1997.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Jan. 31, 2012
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return, Heading	rr_RiskReturnHeading	EMERGING MARKETS EQUITY FUND
Investment Objective, Heading	rr_ObjectiveHeading	Investment Goal
investment Objective, Primary	rr_ObjectivePrimaryTextBlock	Capital appreciation.
Expense, Heading	rr_ExpenseHeading	Fees and Expenses
Expense, Narrative	rr_ExpenseNarrativeTextBlock	The following tables describe the fees and expenses that you may pay if you buy and hold Fund shares.
Shareholder Fees, Caption	rr_ShareholderFeesCaption	SHAREHOLDER FEES (fees paid directly from your investment)
Operating Expenses, Caption	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	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 98% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	98.00%
Expenses, Not Correlated to Ratio Due to Acquired Fund Fees	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements (or the "Financial Highlights" section in the prospectus) because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.
Expense Example, Heading	rr_ExpenseExampleHeading	EXAMPLE
Expense Example, Narrative	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.
Expense Example, By Year, Caption	rr_ExpenseExampleByYearCaption	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Investment Strategy, Heading	rr_StrategyHeading	Principal Investment Strategies
Investment Strategy, Narrative	rr_StrategyNarrativeTextBlock	Under normal circumstances, the Emerging Markets Equity Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of emerging market issuers. Equity securities may include common stocks, preferred stock and warrants. The Fund normally maintains investments in at least six emerging market countries and does not invest more than 35% of its total assets in any one emerging market country. The Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SIMC. The Fund may purchase shares of ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.
Risk, Heading	rr_RiskHeading	Principal Risks
Risk, Narrative	rr_RiskNarrativeTextBlock	Currency Risk -- As a result of the Fund's investments in securities denominated in, and/or receiving revenues in, foreign currencies, the Fund will be subject to currency risk. Currency risk is the risk that those currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency hedged. In either event, the dollar value of an investment in the Fund would be adversely affected. Equity Market Risk -- The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Style Risk -- The risk that emerging market equity securities may underperform other segments of the equity markets or the equity markets as a whole. Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk -- The small and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.
Risk, Lose Money	rr_RiskLoseMoney	Loss of money is a risk of investing in the Fund.
Bar Chart and Performance Table, Heading	rr_BarChartAndPerformanceTableHeading	Performance Information
Performance, Narrative	rr_PerformanceNarrativeTextBlock	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.
Performance, Information Illustrates Variability of Returns	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance.
Performance, Availability Phone Number	rr_PerformanceAvailabilityPhone	1-800-DIAL-SEI
Performance, Past Does Not Indicate Future	rr_PerformancePastDoesNotIndicateFuture	The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Bar Chart, Closing	rr_BarChartClosingTextBlock	Best Quarter: 34.40% (06/30/09) Worst Quarter: -27.79% (12/31/08)
Performance Table, Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2011)
Index No Deduction for Fees, Expenses, Taxes	rr_IndexNoDeductionForFeesExpensesTaxes	reflects no deduction 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	Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your 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.
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | MSCI Emerging Markets Index Return
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	MSCI Emerging Markets Index Return (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(18.17%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	2.70%
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	14.20%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	7.03%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995	[1]
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS A
Risk Return [Abstract]	rr_RiskReturnAbstract
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	rr_RedemptionFeeOverRedemption	(1.25%)
Management Fees	rr_ManagementFeesOverAssets	1.05%
Distribution (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	1.04%
Acquired Fund Fees and Expenses (AFFE)	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.10%	[2]
Expense Example, With Redemption, 1 Year	rr_ExpenseExampleYear01	213
Expense Example, With Redemption, 3 Years	rr_ExpenseExampleYear03	658
Expense Example, With Redemption, 5 Years	rr_ExpenseExampleYear05	1,129
Expense Example, With Redemption, 10 Years	rr_ExpenseExampleYear10	2,431
Annual Return 2002	rr_AnnualReturn2002	(7.99%)
Annual Return 2003	rr_AnnualReturn2003	49.05%
Annual Return 2004	rr_AnnualReturn2004	25.17%
Annual Return 2005	rr_AnnualReturn2005	30.68%
Annual Return 2006	rr_AnnualReturn2006	27.03%
Annual Return 2007	rr_AnnualReturn2007	30.04%
Annual Return 2008	rr_AnnualReturn2008	(52.68%)
Annual Return 2009	rr_AnnualReturn2009	75.07%
Annual Return 2010	rr_AnnualReturn2010	17.70%
Annual Return 2011	rr_AnnualReturn2011	(23.32%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best Quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	34.40%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst Quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.79%)
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return Before Taxes
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(23.32%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(0.56%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	10.73%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	4.61%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS A | After Taxes on Distributions
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(23.16%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(2.00%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	9.57%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	3.96%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995
SIT EMERGING MARKETS EQUITY FUND (First Prospectus Summary) | SIT EMERGING MARKETS EQUITY FUND | CLASS A | After Taxes on Distributions and Sales
Risk Return [Abstract]	rr_RiskReturnAbstract
Average Annual Returns, Label	rr_AverageAnnualReturnLabel	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Returns, 1 Year	rr_AverageAnnualReturnYear01	(14.93%)
Average Annual Returns, 5 Years	rr_AverageAnnualReturnYear05	(0.53%)
Average Annual Returns, 10 Years	rr_AverageAnnualReturnYear10	9.60%
Average Annual Returns, Since Inception	rr_AverageAnnualReturnSinceInception	4.09%
Average Annual Returns, Inception Date	rr_AverageAnnualReturnInceptionDate	Jan. 17, 1995

[1] Index returns are shown from January 31, 1995.

[2] Because the Fund incurred AFFE during the most recent fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements (or the "Financial Highlights" section in the prospectus) because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds.

XML

SIT INTERNATIONAL FIXED INCOME FUND (Prospectus Summary) | SIT INTERNATIONAL FIXED INCOME FUND

INTERNATIONAL FIXED INCOME FUND

Investment Goal

Capital appreciation and current income.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT INTERNATIONAL FIXED INCOME FUND CLASS A
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	1.00%

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

Annual Fund Operating Expenses	SIT INTERNATIONAL FIXED INCOME FUND CLASS A
Management Fees	0.30%
Distribution (12b-1) Fees	none
Other Expenses	0.91%
Total Annual Fund Operating Expenses	1.21%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT INTERNATIONAL FIXED INCOME FUND CLASS A	Class A Shares	123	384	665	1,466

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 119%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the International Fixed Income Fund will invest at

least 80% of its net assets (plus the amount of any borrowings for investment

purposes) in fixed income securities. The Fund will invest primarily in

investment grade foreign government and corporate fixed income securities, as

well as foreign mortgage-backed and/or asset-backed fixed income securities, of

issuers located in at least three countries other than the U.S. It is expected

that at least 40% of the Fund's assets will be invested in non-U.S. securities.

Other fixed income securities in which the Fund may invest include: (i)

securities issued or guaranteed by the U.S. Government and its agencies and

instrumentalities and obligations of U.S. commercial banks, such as certificates

of deposit, time deposits, bankers' acceptances and bank notes; and (ii) U.S.

corporate debt securities and mortgage-backed and asset-backed securities. The

Fund uses a multi-manager approach, relying upon a number of Sub-Advisers with

differing investment philosophies to manage portions of the Fund's portfolio

under the general supervision of SIMC. In selecting investments for the Fund,

the Sub-Advisers choose investment grade securities issued by corporations and

governments located in various developed foreign countries, looking for

opportunities to achieve capital appreciation and gain, as well as current

income. There are no restrictions on the Fund's average portfolio maturity or on

the maturity of any specific security.



The Sub-Advisers may seek to enhance the Fund's return by actively managing the

Fund's foreign currency exposure. In managing the Fund's currency exposure, the

Sub-Advisers buy and sell currencies (i.e., take long or short positions) using

futures and foreign currency forward contracts. The Fund may take long and short

positions in foreign currencies in excess of the value of the Fund's assets

denominated in a particular currency or when the Fund does not own assets

denominated in that currency. The Fund may also engage in currency transactions

in an attempt to take advantage of certain inefficiencies in the currency

exchange market, to increase its exposure to a foreign currency or to shift

exposure to foreign currency fluctuations from one currency to another. In

managing the Fund's currency exposure for foreign securities, the Sub-Advisers

may buy and sell currencies for hedging or for speculative purposes.



The Fund may also invest in futures contracts, forward contracts and swaps for

speculative or hedging purposes. Futures, forwards and swaps are used to

synthetically obtain exposure to the securities identified above or baskets of

such securities and to manage the Fund's interest rate duration and yield curve

exposure. These derivatives are also used to mitigate the Fund's overall level

of risk and/or the Fund's risk to particular types of securities, currencies or

market segments. Interest rate swaps are further used to manage the Fund's yield

spread sensitivity. When the Fund seeks to take an active long or short position

with respect to the likelihood of an event of default of a security or basket of

securities, the Fund may use credit default swaps. The Fund may buy credit

default swaps in an attempt to manage credit risk where the Fund has credit

exposure to an issuer and the Fund may sell credit default swaps to more

efficiently gain credit exposure to such security or basket of securities.



The Fund will also invest in securities rated below investment grade (junk

bonds). However, in general, the Fund will purchase bonds with a rating of CCC

or above. The Fund also invests a portion of its assets in bank loans, which are

generally non-investment grade floating rate instruments. The Fund may invest in

bank loans in the form of participations in the loans (participations) and

assignments of all or a portion of the loans from third parties (assignments).



The Fund may purchase shares of ETFs to gain exposure to a particular portion of

the market while awaiting an opportunity to purchase securities directly.

Principal Risks

Asset-Backed Securities Risk -- Payment of principal and interest on asset-backed

securities is dependent largely on the cash flows generated by the assets

backing the securities, and asset-backed securities may not have the benefit of

any security interest in the related assets.



Bank Loans Risk -- With respect to bank loans, the Fund will assume the credit

risk of both the borrower and the lender that is selling the participation. The

Fund may also have difficulty disposing of bank loans because, in certain cases,

the market for such instruments is not highly liquid.



Below Investment Grade Securities Risk -- Fixed income securities rated below

investment grade (junk bonds) involve greater risks of default or downgrade and

are more volatile than investment grade securities because the prospect for

repayment of principal and interest of many of these securities is speculative.



Corporate Fixed Income Securities Risk -- Corporate fixed income securities

respond to economic developments, especially changes in interest rates, as well

as perceptions of the creditworthiness and business prospects of individual

issuers.



Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities or other

investments denominated in, and/or receiving revenues in, foreign currencies and

the Fund's active management of its currency exposures, the Fund will be subject

to currency risk. Currency risk is the risk that foreign currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely

affected. Due to the Fund's active positions in currencies, it will be subject

to the risk that currency exchange rates may fluctuate in response to, among

other things, changes in interest rates, intervention (or failure to intervene)

by U.S. or foreign governments, central banks or supranational entities, or by

the imposition of currency controls or other political developments in the

United States or abroad.



Derivatives Risk -- The Fund's use of swaps, futures and forward contracts is

subject to market risk, leverage risk, correlation risk and liquidity risk.

Leverage risk and liquidity risk are described below. Market risk is the risk

that the market value of an investment may move up and down, sometimes rapidly

and unpredictably. Correlation risk is the risk that changes in the value of the

derivative may not correlate perfectly with the underlying asset, rate or index.

The Fund's use of swaps and over-the-counter forward contracts is also subject

to credit risk and valuation risk. Valuation risk is the risk that the

derivative may be difficult to value and/or valued incorrectly. Credit risk is

described above. Each of the above risks could cause the Fund to lose more than

the principal amount invested in a derivative instrument.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Extension Risk -- The risk that rising interest rates may extend the duration of

a fixed income security, typically reducing the security's value.



Fixed Income Market Risk -- The prices of the Fund's fixed income securities

respond to economic developments, particularly interest rate changes, as well as

to perceptions about the creditworthiness of individual issuers, including

governments and their agencies. In the case of foreign securities, price

fluctuations will reflect international economic and political events, as well

as changes in currency valuations relative to the U.S. dollar.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Interest Rate Risk -- The risk that the Fund's yield will decline due to falling

interest rates. A rise in interest rates typically causes a fall in the value of

fixed income securities in which the Fund invests, while a fall in interest

rates typically causes a rise in the value of such securities.



Investment Style Risk -- The risk that developed international fixed income

securities may underperform other segments of the fixed income markets or the

fixed income markets as a whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk - The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Mortgage-Backed Securities Risk -- Mortgage-backed securities are affected by,

among other things, interest rate changes and the possibility of prepayment of

the underlying mortgage loans. Mortgage-backed securities are also subject to

the risk that underlying borrowers will be unable to meet their obligations.



Non-Diversified Risk -- The Fund is non-diversified, which means that it may

invest in the securities of relatively few issuers. As a result, the Fund may be

more susceptible to a single adverse economic or political occurrence affecting

one or more of these issuers and may experience increased volatility due to its

investments in those securities.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Prepayment Risk -- The risk that with declining interest rates, fixed income

securities with stated interest rates may have the principal paid earlier than

expected, requiring the Fund to invest the proceeds at generally lower interest

rates.



Loss of money is a risk of investing in the Fund.

Performance Information

The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. The Fund's past

performance (before and after taxes) is not necessarily an indication of how the

Fund will perform in the future. For current performance information, please

call 1-800-DIAL-SEI.

Best Quarter:  13.29% (06/30/02)



Worst Quarter: -3.03% (06/30/05)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT INTERNATIONAL FIXED INCOME FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS A	Class A Shares Return Before Taxes	3.51%	3.26%	5.46%	4.52%	Sep. 01, 1993
CLASS A After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	2.59%	1.81%	3.77%	2.94%	Sep. 01, 1993
CLASS A After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	2.28%	1.92%	3.73%	2.94%	Sep. 01, 1993
Barclays Capital Global Aggregate Ex-U.S. Index Return	Barclays Capital Global Aggregate Ex-U.S. Index Return (reflects no deduction for fees, expenses or taxes)	3.94%	4.33%	4.47%	6.15%	Sep. 01, 1993	[1]

[1] Index returns are shown from September 30, 1993.

XML

SIT EMERGING MARKETS DEBT FUND (Second Prospectus Summary) | SIT EMERGING MARKETS DEBT FUND

EMERGING MARKETS DEBT FUND

Investment Goal

Maximize total return.

Fees and Expenses

The following tables describe the fees and expenses that you may pay if you buy

and hold Fund shares.

SHAREHOLDER FEES (fees paid directly from your investment)

Shareholder Fees	SIT EMERGING MARKETS DEBT FUND CLASS G
Redemption Fee (applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)	1.00%

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

Annual Fund Operating Expenses	SIT EMERGING MARKETS DEBT FUND CLASS G
Management Fees	0.85%
Distribution (12b-1) Fees	0.25%
Other Expenses	0.95%
Total Annual Fund Operating Expenses	2.05%

EXAMPLE

This Example is intended to help you compare the cost of investing in the Fund

with the cost of investing in other mutual funds. The Example assumes that you

invest $10,000 in the Fund for the time periods indicated and then redeem all of

your shares at the end of those periods. The Example also assumes that your

investment has a 5% return each year and that the Fund's operating expenses

remain the same.

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

Expense Example (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
SIT EMERGING MARKETS DEBT FUND CLASS G	Class G Shares	208	643	1,103	2,379

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 59%

of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Emerging Markets Debt Fund will invest at least

80% of its net assets (plus the amount of any borrowings for investment

purposes) in fixed income securities of emerging market issuers. The Fund will

invest in debt securities of government, government-related and corporate

issuers in emerging market countries, as well as entities organized to

restructure the outstanding debt of such issuers. The Fund uses a multi-manager

approach, relying upon a number of Sub-Advisers with differing investment

philosophies to manage portions of the Fund's portfolio under the general

supervision of SIMC. The Sub-Advisers will spread the Fund's holdings across a

number of countries and industries to limit its exposure to a single emerging

market economy and may not invest more than 25% of its assets in any single

country. There are no restrictions on the Fund's average portfolio maturity or

on the maturity of any specific security. There is no minimum rating standard

for the Fund's securities, and the Fund's securities will generally be in the

lower or lowest rating categories (including those below the fourth highest

rating category by a Nationally Recognized Statistical Rating Organization,

commonly referred to as junk bonds).



The Sub-Advisers may seek to enhance the Fund's return by actively managing the

Fund's foreign currency exposure. In managing the Fund's currency exposure, the

Sub-Advisers buy and sell currencies (i.e., take long or short positions) using

futures and foreign currency forward contracts. The Fund may take long and short

positions in foreign currencies in excess of the value of the Fund's assets

denominated in a particular currency or when the Fund does not own assets

denominated in that currency. The Fund may also engage in currency transactions

in an attempt to take advantage of certain inefficiencies in the currency

exchange market, to increase its exposure to a foreign currency or to shift

exposure to foreign currency fluctuations from one currency to another. In

managing the Fund's currency exposure for foreign securities, the Sub-Advisers

may buy and sell currencies for hedging or for speculative purposes.



The Fund may purchase shares of ETFs to gain exposure to a particular portion of

the market while awaiting an opportunity to purchase securities directly.

Principal Risks

Below Investment Grade Securities Risk -- Fixed income securities rated below

investment grade (junk bonds) involve greater risks of default or downgrade and

are more volatile than investment grade securities because the prospect for

repayment of principal and interest of many of these securities is speculative.



Corporate Fixed Income Securities Risk -- Corporate fixed income securities

respond to economic developments, especially changes in interest rates, as well

as perceptions of the creditworthiness and business prospects of individual

issuers.



Credit Risk -- The risk that the issuer of a security or the counterparty to a

contract will default or otherwise become unable to honor a financial

obligation.



Currency Risk -- As a result of the Fund's investments in securities or other

investments denominated in, and/or receiving revenues in, foreign currencies and

the Fund's active management of its currency exposures, the Fund will be subject

to currency risk. Currency risk is the risk that foreign currencies will decline

in value relative to the U.S. dollar or, in the case of hedging positions, that

the U.S. dollar will decline in value relative to the currency hedged. In either

event, the dollar value of an investment in the Fund would be adversely affected.

Due to the Fund's active positions in currencies, it will be subject to the risk that

currency exchange rates may fluctuate in response to, among other things, changes

in interest rates, intervention (or failure to intervene) by U.S. or foreign governments,

central banks or supranational entities, or by the imposition of currency controls or

other political developments in the United States or abroad.



Derivatives Risk -- The Fund's use of futures and forward contracts is subject to

market risk, leverage risk, correlation risk and liquidity risk. Leverage risk

and liquidity risk are described below. Market risk is the risk that the market

value of an investment may move up and down, sometimes rapidly and

unpredictably. Correlation risk is the risk that changes in the value of the

derivative may not correlate perfectly with the underlying asset, rate or index.

The Fund's use of over-the-counter forward contracts is also subject to credit

risk and valuation risk. Valuation risk is the risk that the derivative may be

difficult to value and/or valued incorrectly. Credit risk is described above.

Each of the above risks could cause the Fund to lose more than the principal

amount invested in a derivative instrument.



Exchange-Traded Funds (ETFs) Risk -- The risks of owning shares of an ETF

generally reflect the risks of owning the underlying securities the ETF is

designed to track, although lack of liquidity in an ETF could result in its

value being more volatile than the underlying portfolio securities.



Extension Risk -- The risk that rising interest rates may extend the duration of

a fixed income security, typically reducing the security's value.



Fixed Income Market Risk -- The prices of the Fund's fixed income securities

respond to economic developments, particularly interest rate changes, as well as

to perceptions about the creditworthiness of individual issuers, including

governments and their agencies. In the case of foreign securities, price

fluctuations will reflect international economic and political events, as well

as changes in currency valuations relative to the U.S. dollar.



Foreign Investment/Emerging Markets Risk -- The risk that non-U.S. securities may

be subject to additional risks due to, among other things, political, social and

economic developments abroad, currency movements and different legal, regulatory

and tax environments. These additional risks may be heightened with respect to

emerging market countries since political turmoil and rapid changes in economic

conditions are more likely to occur in these countries.



Foreign Sovereign Debt Securities Risk -- The risks that (i) the governmental

entity that controls the repayment of sovereign debt may not be willing or able

to repay the principal and/or interest when it becomes due, due to factors such

as debt service burden, political constraints, cash flow problems and other

national economic factors; (ii) governments may default on their debt

securities, which may require holders of such securities to participate in debt

rescheduling or additional lending to defaulting governments; and (iii) there is

no bankruptcy proceeding by which defaulted sovereign debt may be collected in

whole or in part.



Interest Rate Risk -- The risk that the Fund's yield will decline due to falling

interest rates. A rise in interest rates typically causes a fall in the value of

fixed income securities in which the Fund invests, while a fall in interest

rates typically causes a rise in the value of such securities.



Investment Style Risk -- The risk that emerging market debt securities may

underperform other segments of the fixed income markets or the fixed income

markets as a whole.



Leverage Risk -- The use of leverage can amplify the effects of market volatility

on the Fund's share price and may also cause the Fund to liquidate portfolio

positions when it would not be advantageous to do so in order to satisfy its

obligations.



Liquidity Risk -- The risk that certain securities may be difficult or impossible

to sell at the time and the price that the Fund would like. The Fund may have to

lower the price, sell other securities instead or forego an investment

opportunity, any of which could have a negative effect on Fund management or

performance.



Non-Diversified Risk -- The Fund is non-diversified, which means that it may

invest in the securities of relatively few issuers. As a result, the Fund may be

more susceptible to a single adverse economic or political occurrence affecting

one or more of these issuers, and may experience increased volatility due to its

investments in those securities.



Portfolio Turnover Risk -- Due to its investment strategy, the Fund may buy and

sell securities frequently. This may result in higher transaction costs and

additional capital gains tax liabilities.



Prepayment Risk -- The risk that with declining interest rates, fixed income

securities with stated interest rates may have the principal paid earlier than

expected, requiring the Fund to invest the proceeds at generally lower interest

rates.



Loss of money is a risk of investing in the Fund.

Performance Information

As of January 31, 2012, Class G Shares of the Fund had not commenced operations

and did not have a performance history.



The bar chart and the performance table below provide some indication of the

risks of investing in the Fund by showing changes in the Fund's performance from

year to year for the past ten calendar years and by showing how the Fund's

average annual returns for 1, 5 and 10 years, and since the Fund's inception,

compared with those of a broad measure of market performance. Since Class G

Shares are invested in the same portfolio of securities, returns for Class G

Shares will be substantially similar to those of Class A Shares, shown here, and

will differ only to the extent that Class G Shares have higher expenses. The

Fund's past performance (before and after taxes) is not necessarily an

indication of how the Fund will perform in the future.

Best Quarter:   17.55% (12/31/2002)



Worst Quarter: -13.19% (12/31/2008)

Average Annual Total Returns (for the periods ended December 31, 2011)

After-tax returns are calculated using the historical highest individual federal

marginal income tax rates and do not reflect the impact of state and local

taxes. Your actual after-tax returns will depend on your 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.

Average Annual Total Returns SIT EMERGING MARKETS DEBT FUND	Average Annual Returns, Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS G	Class A Shares Return Before Taxes	4.74%	7.56%	12.15%	10.40%	Jun. 26, 1997
CLASS G After Taxes on Distributions	Class A Shares Return After Taxes on Distributions	2.52%	4.96%	8.98%	7.03%	Jun. 26, 1997
CLASS G After Taxes on Distributions and Sales	Class A Shares Return After Taxes on Distributions and Sale of Fund Shares	3.10%	4.90%	8.76%	6.93%	Jun. 26, 1997
J.P. Morgan EMBI Global Diversified Index Return	J.P. Morgan EMBI Global Diversified Index Return (reflects no deduction for fees, expenses, or taxes)	7.35%	7.87%	10.62%	9.59%	Jun. 26, 1997	[1]

[1] Index returns are shown from June 30, 1997.