v3.25.4
Expense Example
Jan. 28, 2026
USD ($)
LARGE CAP FUND - Class F Prospectus | SIMT Large Cap Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 100
Expense Example, with Redemption, 3 Years 312
Expense Example, with Redemption, 5 Years 542
Expense Example, with Redemption, 10 Years 1,201
LARGE CAP VALUE FUND - Class F Prospectus | SIMT LARGE CAP VALUE FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 96
Expense Example, with Redemption, 3 Years 300
Expense Example, with Redemption, 5 Years 520
Expense Example, with Redemption, 10 Years 1,155
LARGE CAP GROWTH FUND - Class F Prospectus | SIMT LARGE CAP GROWTH FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 100
Expense Example, with Redemption, 3 Years 312
Expense Example, with Redemption, 5 Years 542
Expense Example, with Redemption, 10 Years 1,201
LARGE CAP INDEX FUND - Class F Prospectus | SIMT Large Cap Index Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 65
Expense Example, with Redemption, 3 Years 205
Expense Example, with Redemption, 5 Years 357
Expense Example, with Redemption, 10 Years 798
TAX-MANAGED LARGE CAP FUND - Class F Prospectus | SIMT TAX-MANAGED LARGE CAP FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
S&P 500 INDEX FUND - Class F Prospectus | SIMT S&P 500 Index Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 55
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 302
Expense Example, with Redemption, 10 Years 677
SMALL CAP FUND - Class F Prospectus | SIMT Small Cap Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 125
Expense Example, with Redemption, 3 Years 390
Expense Example, with Redemption, 5 Years 676
Expense Example, with Redemption, 10 Years 1,489
SMALL CAP VALUE FUND - Class F Prospectus | SIMT SMALL CAP VALUE FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
SMALL CAP GROWTH FUND - Class F Prospectus | SIMT SMALL CAP GROWTH FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
TAX-MANAGED SMALL/MID CAP FUND - Class F Prospectus | SIMT TAX-MANAGED SMALL/MID CAP FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
MID-CAP FUND - Class F Prospectus | SIMT MID CAP FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
U.S. MANAGED VOLATILITY FUND - Class F Prospectus | SIMT US MANAGED VOLATILITY FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 116
Expense Example, with Redemption, 3 Years 362
Expense Example, with Redemption, 5 Years 628
Expense Example, with Redemption, 10 Years 1,386
GLOBAL MANAGED VOLATILITY FUND - Class F Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
Tax-Managed Managed Volatility Fund - Class F Prospectus | SIMT Tax-Managed Managed Volatility Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 116
Expense Example, with Redemption, 3 Years 362
Expense Example, with Redemption, 5 Years 628
Expense Example, with Redemption, 10 Years 1,386
Tax-Managed International Managed Volatility Fund - Class F Prospectus | SIMT Tax-Managed International Managed Volatility Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 140
Expense Example, with Redemption, 3 Years 437
Expense Example, with Redemption, 5 Years 755
Expense Example, with Redemption, 10 Years 1,657
REAL ESTATE FUND - Class F Prospectus | SIMT REAL ESTATE FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
CORE FIXED INCOME FUND - Class F Prospectus | SIMT CORE FIXED INCOME FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 76
Expense Example, with Redemption, 3 Years 237
Expense Example, with Redemption, 5 Years 411
Expense Example, with Redemption, 10 Years 918
HIGH YIELD BOND FUND - Class F Prospectus | SIMT HIGH YIELD BOND FUND | CLASS F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
CONSERVATIVE INCOME FUND - Class F Prospectus | SIMT Conservative Income Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 60
Expense Example, with Redemption, 3 Years 189
Expense Example, with Redemption, 5 Years 329
Expense Example, with Redemption, 10 Years 738
TAX-FREE CONSERVATIVE INCOME FUND - Class F Prospectus | SIMT Tax-Free Conservative Income Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 60
Expense Example, with Redemption, 3 Years 189
Expense Example, with Redemption, 5 Years 329
Expense Example, with Redemption, 10 Years 738
REAL RETURN FUND - Class F Prospectus | SIMT Real Return Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 72
Expense Example, with Redemption, 3 Years 224
Expense Example, with Redemption, 5 Years 390
Expense Example, with Redemption, 10 Years 871
DYNAMIC ASSET ALLOCATION FUND - Class F Prospectus | SIMT Dynamic Asset Allocation Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 120
Expense Example, with Redemption, 3 Years 375
Expense Example, with Redemption, 5 Years 649
Expense Example, with Redemption, 10 Years 1,432
MULTI-STRATEGY ALTERNATIVE FUND - Class F Prospectus | SIMT Multi-Strategy Alternative Fund | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 296
Expense Example, with Redemption, 3 Years 907
Expense Example, with Redemption, 5 Years 1,543
Expense Example, with Redemption, 10 Years 3,252
LARGE CAP FUND - Class I Prospectus | SIMT Large Cap Fund | SIMT Large Cap Fund - Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 125
Expense Example, with Redemption, 3 Years 390
Expense Example, with Redemption, 5 Years 676
Expense Example, with Redemption, 10 Years 1,489
LARGE CAP VALUE FUND - Class I Prospectus | SIMT LARGE CAP VALUE FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 121
Expense Example, with Redemption, 3 Years 378
Expense Example, with Redemption, 5 Years 654
Expense Example, with Redemption, 10 Years 1,443
LARGE CAP GROWTH FUND - Class I Prospectus | SIMT LARGE CAP GROWTH FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 125
Expense Example, with Redemption, 3 Years 390
Expense Example, with Redemption, 5 Years 676
Expense Example, with Redemption, 10 Years 1,489
S&P 500 Index Fund - Class I Prospectus | SIMT S&P 500 Index Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 81
Expense Example, with Redemption, 3 Years 252
Expense Example, with Redemption, 5 Years 439
Expense Example, with Redemption, 10 Years 978
SMALL CAP FUND - Class I Prospectus | SIMT Small Cap Fund | SIMT Small Cap Fund - Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 151
Expense Example, with Redemption, 3 Years 468
Expense Example, with Redemption, 5 Years 808
Expense Example, with Redemption, 10 Years 1,768
SMALL CAP VALUE FUND - Class I Prospectus | SIMT SMALL CAP VALUE FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 152
Expense Example, with Redemption, 3 Years 471
Expense Example, with Redemption, 5 Years 813
Expense Example, with Redemption, 10 Years 1,779
SMALL CAP GROWTH FUND - Class I Prospectus | SIMT SMALL CAP GROWTH FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 152
Expense Example, with Redemption, 3 Years 471
Expense Example, with Redemption, 5 Years 813
Expense Example, with Redemption, 10 Years 1,779
MID-CAP FUND - Class I Prospectus | SIMT MID CAP FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 126
Expense Example, with Redemption, 3 Years 393
Expense Example, with Redemption, 5 Years 681
Expense Example, with Redemption, 10 Years 1,500
U.S. MANAGED VOLATILITY FUND - Class I Prospectus | SIMT US MANAGED VOLATILITY FUND | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 142
Expense Example, with Redemption, 3 Years 440
Expense Example, with Redemption, 5 Years 761
Expense Example, with Redemption, 10 Years 1,669
GLOBAL MANAGED VOLATILITY FUND - Class I Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 152
Expense Example, with Redemption, 3 Years 471
Expense Example, with Redemption, 5 Years 813
Expense Example, with Redemption, 10 Years 1,779
REAL ESTATE FUND - Class I Prospectus | SIMT REAL ESTATE FUND | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 152
Expense Example, with Redemption, 3 Years 471
Expense Example, with Redemption, 5 Years 813
Expense Example, with Redemption, 10 Years 1,779
CORE FIXED INCOME FUND - Class I Prospectus | SIMT CORE FIXED INCOME FUND | CLASS I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
HIGH YIELD BOND FUND - Class I Prospectus | SIMT HIGH YIELD BOND FUND | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 132
Expense Example, with Redemption, 3 Years 412
Expense Example, with Redemption, 5 Years 713
Expense Example, with Redemption, 10 Years 1,568
REAL RETURN FUND - Class I Prospectus | SIMT Real Return Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 97
Expense Example, with Redemption, 3 Years 303
Expense Example, with Redemption, 5 Years 525
Expense Example, with Redemption, 10 Years 1,166
LARGE CAP FUND - Class Y Prospectus | SIMT Large Cap Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 75
Expense Example, with Redemption, 3 Years 233
Expense Example, with Redemption, 5 Years 406
Expense Example, with Redemption, 10 Years 906
LARGE CAP VALUE FUND - Class Y Prospectus | SIMT LARGE CAP VALUE FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 70
Expense Example, with Redemption, 3 Years 221
Expense Example, with Redemption, 5 Years 384
Expense Example, with Redemption, 10 Years 859
LARGE CAP GROWTH FUND - Class Y Prospectus | SIMT LARGE CAP GROWTH FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 75
Expense Example, with Redemption, 3 Years 233
Expense Example, with Redemption, 5 Years 406
Expense Example, with Redemption, 10 Years 906
TAX-MANAGED LARGE CAP FUND - Class Y Prospectus | SIMT TAX-MANAGED LARGE CAP FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 67
Expense Example, with Redemption, 3 Years 211
Expense Example, with Redemption, 5 Years 368
Expense Example, with Redemption, 10 Years 822
SMALL CAP FUND - Class Y Prospectus | SIMT Small Cap Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 100
Expense Example, with Redemption, 3 Years 312
Expense Example, with Redemption, 5 Years 542
Expense Example, with Redemption, 10 Years 1,201
SMALL CAP VALUE FUND - Class Y Prospectus | SIMT SMALL CAP VALUE FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
SMALL CAP GROWTH FUND - Class Y Prospectus | SIMT SMALL CAP GROWTH FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
TAX-MANAGED SMALL/MID CAP FUND - Class Y Prospectus | SIMT TAX-MANAGED SMALL/MID CAP FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
MID-CAP FUND - Class Y Prospectus | SIMT MID CAP FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 76
Expense Example, with Redemption, 3 Years 237
Expense Example, with Redemption, 5 Years 411
Expense Example, with Redemption, 10 Years 918
U.S. MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT US MANAGED VOLATILITY FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 91
Expense Example, with Redemption, 3 Years 284
Expense Example, with Redemption, 5 Years 493
Expense Example, with Redemption, 10 Years 1,096
GLOBAL MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT GLOBAL MANAGED VOLATILITY FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
TAX-MANAGED MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT Tax-Managed Managed Volatility Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 91
Expense Example, with Redemption, 3 Years 284
Expense Example, with Redemption, 5 Years 493
Expense Example, with Redemption, 10 Years 1,096
TAX-MANAGED INTERNATIONAL MANAGED VOLATILITY FUND - Class Y Prospectus | SIMT Tax-Managed International Managed Volatility Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 115
Expense Example, with Redemption, 3 Years 359
Expense Example, with Redemption, 5 Years 622
Expense Example, with Redemption, 10 Years 1,375
REAL ESTATE FUND - Class Y Prospectus | SIMT REAL ESTATE FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 315
Expense Example, with Redemption, 5 Years 547
Expense Example, with Redemption, 10 Years 1,213
CORE FIXED INCOME FUND - Class Y Prospectus | SIMT CORE FIXED INCOME FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 50
Expense Example, with Redemption, 3 Years 157
Expense Example, with Redemption, 5 Years 274
Expense Example, with Redemption, 10 Years 616
HIGH YIELD BOND FUND - Class Y Prospectus | SIMT HIGH YIELD BOND FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 76
Expense Example, with Redemption, 3 Years 237
Expense Example, with Redemption, 5 Years 411
Expense Example, with Redemption, 10 Years 918
CONSERVATIVE INCOME FUND - Class Y Prospectus | SIMT Conservative Income Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 35
Expense Example, with Redemption, 3 Years 109
Expense Example, with Redemption, 5 Years 191
Expense Example, with Redemption, 10 Years 431
TAX-FREE CONSERVATIVE INCOME FUND - Class Y Prospectus | SIMT Tax-Free Conservative Income Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 35
Expense Example, with Redemption, 3 Years 109
Expense Example, with Redemption, 5 Years 191
Expense Example, with Redemption, 10 Years 431
REAL RETURN FUND - Class Y Prospectus | SIMT Real Return Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 46
Expense Example, with Redemption, 3 Years 144
Expense Example, with Redemption, 5 Years 252
Expense Example, with Redemption, 10 Years 567
DYNAMIC ASSET ALLOCATION FUND - Class Y Prospectus | SIMT Dynamic Asset Allocation Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 95
Expense Example, with Redemption, 3 Years 296
Expense Example, with Redemption, 5 Years 515
Expense Example, with Redemption, 10 Years 1,143
MULTI-STRATEGY ALTERNATIVE FUND - Class Y Prospectus | SIMT Multi-Strategy Alternative Fund | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 271
Expense Example, with Redemption, 3 Years 832
Expense Example, with Redemption, 5 Years 1,420
Expense Example, with Redemption, 10 Years 3,012
MULTI-ASSET ACCUMULATION FUND - Class F Prospectus | SIMT MULTI-ASSET ACCUMULATION FUND | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 136
Expense Example, with Redemption, 3 Years 425
Expense Example, with Redemption, 5 Years 734
Expense Example, with Redemption, 10 Years 1,613
MULTI-ASSET INCOME FUND - Class F Prospectus | SIMT MULTI-ASSET INCOME FUND | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 123
Expense Example, with Redemption, 3 Years 384
Expense Example, with Redemption, 5 Years 665
Expense Example, with Redemption, 10 Years 1,466
MULTI-ASSET INFLATION MANAGED FUND - Class F Prospectus | SIMT MULTI-ASSET INFLATION MANAGED FUND | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 131
Expense Example, with Redemption, 3 Years 409
Expense Example, with Redemption, 5 Years 708
Expense Example, with Redemption, 10 Years 1,556
MULTI-ASSET CAPITAL STABILITY FUND - Class F Prospectus | SIMT MULTI-ASSET CAPITAL STABILITY FUND | Class F  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 100
Expense Example, with Redemption, 3 Years 312
Expense Example, with Redemption, 5 Years 542
Expense Example, with Redemption, 10 Years 1,201
MULTI-ASSET ACCUMULATION FUND - Class Y Prospectus | SIMT MULTI-ASSET ACCUMULATION FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 111
Expense Example, with Redemption, 3 Years 347
Expense Example, with Redemption, 5 Years 601
Expense Example, with Redemption, 10 Years 1,329
MULTI-ASSET INCOME FUND - Class Y Prospectus | SIMT MULTI-ASSET INCOME FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 98
Expense Example, with Redemption, 3 Years 306
Expense Example, with Redemption, 5 Years 531
Expense Example, with Redemption, 10 Years 1,178
MULTI-ASSET INFLATION MANAGED FUND - Class Y Prospectus | SIMT MULTI-ASSET INFLATION MANAGED FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 106
Expense Example, with Redemption, 3 Years 331
Expense Example, with Redemption, 5 Years 574
Expense Example, with Redemption, 10 Years 1,271
MULTI-ASSET CAPITAL STABILITY FUND - Class Y Prospectus | SIMT MULTI-ASSET CAPITAL STABILITY FUND | Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 75
Expense Example, with Redemption, 3 Years 233
Expense Example, with Redemption, 5 Years 406
Expense Example, with Redemption, 10 Years $ 906