Annual Fund Operating Expenses	Feb. 05, 2025
U.S. MANAGED VOLATILITY FUND - Class F Prospectus | SIMT US MANAGED VOLATILITY FUND | CLASS F
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.55%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.58%
Expenses (as a percentage of Assets)	1.13%	[1]
GLOBAL MANAGED VOLATILITY FUND - Class F Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | CLASS F
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.65%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.59%
Expenses (as a percentage of Assets)	1.24%
TAX-MANAGED MANAGED VOLATILITY FUND - Class F Prospectus | SIMT TAX-MANAGED MANAGED VOLATILITY FUND | Class F
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.55%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.58%
Expenses (as a percentage of Assets)	1.13%	[2]
TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND - Class F Prospectus | SIMT TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND | Class F
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.65%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.68%
Expenses (as a percentage of Assets)	1.33%	[3]
U.S. MANAGED VOLATILITY FUND - Class I Prospectus | SIMT US MANAGED VOLATILITY FUND | Class I
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.55%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.83%
Expenses (as a percentage of Assets)	1.38%	[4]
GLOBAL MANAGED VOLATILITY FUND - Class I Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | Class I
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.65%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.84%
Expenses (as a percentage of Assets)	1.49%
U.S. MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT US MANAGED VOLATILITY FUND | Class Y
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.55%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.33%
Expenses (as a percentage of Assets)	0.88%	[5]
GLOBAL MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | Class Y
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.65%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.34%
Expenses (as a percentage of Assets)	0.99%
TAX-MANAGED MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT TAX-MANAGED MANAGED VOLATILITY FUND | Class Y
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.55%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.33%
Expenses (as a percentage of Assets)	0.88%	[6]
TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND | Class Y
Prospectus [Line Items]
Management Fees (as a percentage of Assets)	0.65%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.43%
Expenses (as a percentage of Assets)	1.08%	[7]

[1] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[2] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[3] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[4] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[5] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[6] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).

[7] Expenses have been restated to reflect current expenses. Consequently, the Fund's Total Annual Fund Operating Expenses will differ from the numbers shown in the Fund's financial statements (or the "Financial Highlights" section in the prospectus).