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020271 - Schedule - Shareholder Fees
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020272 - Schedule - Annual Fund Operating Expenses
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020273 - Schedule - Expense Example {Transposed}
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020275 - Document - Risk/Return Summary {Unlabeled} - SIMT MULTI-ASSET INCOME FUND (Class A)
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020276 - Schedule - Shareholder Fees
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020277 - Schedule - Annual Fund Operating Expenses
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020278 - Schedule - Expense Example {Transposed}
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020280 - Document - Risk/Return Summary {Unlabeled} - SIMT MULTI-ASSET INFLATION MANAGED FUND (Class A)
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020281 - Schedule - Shareholder Fees
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020282 - Schedule - Annual Fund Operating Expenses
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020283 - Schedule - Expense Example {Transposed}
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020285 - Document - Risk/Return Summary {Unlabeled} - SIMT MULTI-ASSET CAPITAL STABILITY FUND (Class A)
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020286 - Schedule - Shareholder Fees
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020287 - Schedule - Annual Fund Operating Expenses
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020288 - Schedule - Expense Example {Transposed}
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020006 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Large Cap Fund (- Class A)
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020013 - Disclosure - Risk/Return Detail Data {Elements} - SIMT LARGE CAP VALUE FUND (- CLASS A)
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020020 - Disclosure - Risk/Return Detail Data {Elements} - SIMT LARGE CAP GROWTH FUND (- CLASS A)
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020027 - Disclosure - Risk/Return Detail Data {Elements} - SIMT TAX-MANAGED LARGE CAP FUND (- CLASS A)
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link:calculationLink
020034 - Disclosure - Risk/Return Detail Data {Elements} - SIMT S&P 500 Index Fund (Class A)
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020041 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Small Cap Fund (- Class A)
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020048 - Disclosure - Risk/Return Detail Data {Elements} - SIMT SMALL CAP VALUE FUND (- CLASS A)
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020055 - Disclosure - Risk/Return Detail Data {Elements} - SIMT SMALL CAP GROWTH FUND (- CLASS A)
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020062 - Disclosure - Risk/Return Detail Data {Elements} - SIMT TAX-MANAGED SMALL/MID CAP FUND (- CLASS A)
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020069 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MID CAP FUND (- CLASS A)
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020076 - Disclosure - Risk/Return Detail Data {Elements} - SIMT US MANAGED VOLATILITY FUND (- CLASS A)
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020083 - Disclosure - Risk/Return Detail Data {Elements} - SIMT GLOBAL MANAGED VOLATILITY FUND (- CLASS A)
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020090 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Tax-Managed Managed Volatility Fund (- Class A)
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020097 - Disclosure - Risk/Return Detail Data {Elements} - SIMT REAL ESTATE FUND (- CLASS A)
link:presentationLink
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020104 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Enhanced Income Fund - Class A (Class A)
link:presentationLink
link:definitionLink
link:calculationLink
020111 - Disclosure - Risk/Return Detail Data {Elements} - SIMT CORE FIXED INCOME FUND (- CLASS A)
link:presentationLink
link:definitionLink
link:calculationLink
020118 - Disclosure - Risk/Return Detail Data {Elements} - SIMT U.S. Fixed Income Fund (- Class A)
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020125 - Disclosure - Risk/Return Detail Data {Elements} - SIMT HIGH YIELD BOND FUND (- CLASS A)
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020132 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Real Return Fund (Class A)
link:presentationLink
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020139 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Multi-Strategy Alternative Fund (Class A)
link:presentationLink
link:definitionLink
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020146 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Large Cap Fund (- Class I)
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020153 - Disclosure - Risk/Return Detail Data {Elements} - SIMT LARGE CAP VALUE FUND (- CLASS I)
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020160 - Disclosure - Risk/Return Detail Data {Elements} - SIMT LARGE CAP GROWTH FUND (- CLASS I)
link:presentationLink
link:definitionLink
link:calculationLink
020167 - Disclosure - Risk/Return Detail Data {Elements} - SIMT S&P 500 Index Fund (Class I)
link:presentationLink
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020174 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Small Cap Fund (- Class I)
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020181 - Disclosure - Risk/Return Detail Data {Elements} - SIMT SMALL CAP VALUE FUND (- CLASS I)
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020188 - Disclosure - Risk/Return Detail Data {Elements} - SIMT SMALL CAP GROWTH FUND (- CLASS I)
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020195 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MID CAP FUND (- CLASS I)
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020202 - Disclosure - Risk/Return Detail Data {Elements} - SIMT US MANAGED VOLATILITY FUND (Class I)
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020209 - Disclosure - Risk/Return Detail Data {Elements} - SIMT GLOBAL MANAGED VOLATILITY FUND (Class I)
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020216 - Disclosure - Risk/Return Detail Data {Elements} - SIMT REAL ESTATE FUND (Class I)
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020223 - Disclosure - Risk/Return Detail Data {Elements} - SIMT ENHANCED INCOME FUND (Class I)
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link:definitionLink
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020230 - Disclosure - Risk/Return Detail Data {Elements} - SIMT CORE FIXED INCOME FUND (- CLASS I)
link:presentationLink
link:definitionLink
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020237 - Disclosure - Risk/Return Detail Data {Elements} - SIMT U.S. Fixed Income Fund
link:presentationLink
link:definitionLink
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020244 - Disclosure - Risk/Return Detail Data {Elements} - SIMT HIGH YIELD BOND FUND (Class I)
link:presentationLink
link:definitionLink
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020251 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Real Return Fund
link:presentationLink
link:definitionLink
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020258 - Disclosure - Risk/Return Detail Data {Elements} - SIMT S&P 500 Index Fund (Class E)
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link:definitionLink
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020265 - Disclosure - Risk/Return Detail Data {Elements} - SIMT TAX-MANAGED LARGE CAP FUND (- CLASS Y)
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020269 - Disclosure - Risk/Return Detail Data {Elements} - SIMT Prime Obligation Fund (Class A)
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020274 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MULTI-ASSET ACCUMULATION FUND (Class A)
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020279 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MULTI-ASSET INCOME FUND (Class A)
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020284 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MULTI-ASSET INFLATION MANAGED FUND (Class A)
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020289 - Disclosure - Risk/Return Detail Data {Elements} - SIMT MULTI-ASSET CAPITAL STABILITY FUND (Class A)
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