v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Wilshire Mutual Funds, Inc.
Entity Central Index Key 0000890453
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Investment Class  
Shareholder Report [Line Items]  
Fund Name Large Company Growth Portfolio
Class Name Investment Class
Trading Symbol DTLGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Large Company Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$66
1.28%
[1]
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.28%
Net Assets $ 281,690,503
Holdings Count | $ / shares 384
Advisory Fees Paid, Amount $ 1,051,991
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$281,690,503
Number of Holdings
384
Net Advisory Fee
$1,051,991
Portfolio Turnover
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
40.5
%
Communication Services
12.4
%
Consumer Discretionary
8.3
%
Health Care
7.0
%
Industrials
6.1
%
Financials
4.3
%
Mortgage Securities
3.1
%
Asset Backed Securities
1.2
%
Consumer Staples
1.3
%
Cash & Other
15.8
%
Top 10 Issuers
(% of Net Assets)
NVIDIA Corp.
10.1
%
Alphabet, Inc.
6.4
%
Apple, Inc.
4.9
%
Microsoft Corp.
4.8
%
Broadcom, Inc.
3.9
%
Amazon.com, Inc.
3.3
%
Meta Platforms, Inc.
3.0
%
Taiwan Semiconductor Manufacturing Co. Ltd.
2.6
%
Voya VACS Series SC Fund
2.3
%
Eli Lilly & Co.
1.7
%
[2]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Large Company Growth Portfolio
Class Name Institutional Class
Trading Symbol WLCGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Large Company Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$45
0.88%
[3]
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.88%
Net Assets $ 281,690,503
Holdings Count | $ / shares 384
Advisory Fees Paid, Amount $ 1,051,991
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$281,690,503
Number of Holdings
384
Net Advisory Fee
$1,051,991
Portfolio Turnover
48%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
40.5
%
Communication Services
12.4
%
Consumer Discretionary
8.3
%
Health Care
7.0
%
Industrials
6.1
%
Financials
4.3
%
Mortgage Securities
3.1
%
Asset Backed Securities
1.2
%
Consumer Staples
1.3
%
Cash & Other
15.8
%
Top 10 Issuers
(% of Net Assets)
NVIDIA Corp.
10.1
%
Alphabet, Inc.
6.4
%
Apple, Inc.
4.9
%
Microsoft Corp.
4.8
%
Broadcom, Inc.
3.9
%
Amazon.com, Inc.
3.3
%
Meta Platforms, Inc.
3.0
%
Taiwan Semiconductor Manufacturing Co. Ltd.
2.6
%
Voya VACS Series SC Fund
2.3
%
Eli Lilly & Co.
1.7
%
[4]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Large Company Value Portfolio
Class Name Investment Class
Trading Symbol DTLVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Large Company Value Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$71
1.38%
[5]
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.38%
Net Assets $ 179,419,113
Holdings Count | $ / shares 529
Advisory Fees Paid, Amount $ 635,678
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$179,419,113
Number of Holdings
529
Net Advisory Fee
$635,678
Portfolio Turnover
34%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
16.1
%
Financials
15.8
%
Health Care
11.7
%
Industrials
10.6
%
Consumer Discretionary
6.6
%
Energy
5.8
%
Materials
4.8
%
Consumer Staples
4.1
%
Communication Services
3.6
%
Cash & Other
20.9
%
Top 10 Issuers
(% of Net Assets)
Amazon.com, Inc.
2.3
%
Voya VACS Series SC Fund
2.2
%
Microsoft Corp.
2.0
%
Apple, Inc.
1.7
%
Workday, Inc.
1.5
%
Russell 1000 Value Index Total Return
1.4
%
American International Group, Inc.
1.2
%
Bank of America Corp.
1.2
%
Wells Fargo & Co.
1.1
%
APA Corp.
1.0
%
[6]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Large Company Value Portfolio
Class Name Institutional Class
Trading Symbol WLCVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Large Company Value Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$52
1.00%
[7]
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.00%
Net Assets $ 179,419,113
Holdings Count | $ / shares 529
Advisory Fees Paid, Amount $ 635,678
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$179,419,113
Number of Holdings
529
Net Advisory Fee
$635,678
Portfolio Turnover
34%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
16.1
%
Financials
15.8
%
Health Care
11.7
%
Industrials
10.6
%
Consumer Discretionary
6.6
%
Energy
5.8
%
Materials
4.8
%
Consumer Staples
4.1
%
Communication Services
3.6
%
Cash & Other
20.9
%
Top 10 Issuers
(% of Net Assets)
Amazon.com, Inc.
2.3
%
Voya VACS Series SC Fund
2.2
%
Microsoft Corp.
2.0
%
Apple, Inc.
1.7
%
Workday, Inc.
1.5
%
Russell 1000 Value Index Total Return
1.4
%
American International Group, Inc.
1.2
%
Bank of America Corp.
1.2
%
Wells Fargo & Co.
1.1
%
APA Corp.
1.0
%
[8]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Small Company Growth Portfolio
Class Name Investment Class
Trading Symbol DTSGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Small Company Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
109
1.95%
[9]
Expenses Paid, Amount $ 109
Expense Ratio, Percent 1.95%
Net Assets $ 25,774,257
Holdings Count | $ / shares 439
Advisory Fees Paid, Amount $ 24,332
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$25,774,257
Number of Holdings
439
Net Advisory Fee
$24,332
Portfolio Turnover
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Industrials
26.6
%
Health Care
23.1
%
Information Technology
19.3
%
Consumer Discretionary
10.3
%
Financials
8.0
%
Energy
5.5
%
Communication Services
1.6
%
Materials
1.6
%
Consumer Staples
1.5
%
Cash & Other
2.5
%
Top 10 Issuers
(% of Net Assets)
PDF Solutions, Inc.
1.7
%
Ligand Pharmaceuticals, Inc.
1.6
%
Argan, Inc.
1.5
%
Sterling Infrastructure, Inc.
1.5
%
Federal Signal Corp.
1.1
%
UL Solutions, Inc.
1.1
%
MACOM Technology Solutions Holdings, Inc.
1.0
%
MYR Group, Inc.
1.0
%
Terawulf, Inc.
1.0
%
SharkNinja, Inc.
0.9
%
[10]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Small Company Growth Portfolio
Class Name Institutional Class
Trading Symbol WSMGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Small Company Growth Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$91
1.64%
[11]
Expenses Paid, Amount $ 91
Expense Ratio, Percent 1.64%
Net Assets $ 25,774,257
Holdings Count | $ / shares 439
Advisory Fees Paid, Amount $ 24,332
Investment Company Portfolio Turnover 58.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$25,774,257
Number of Holdings
439
Net Advisory Fee
$24,332
Portfolio Turnover
58%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Industrials
26.6
%
Health Care
23.1
%
Information Technology
19.3
%
Consumer Discretionary
10.3
%
Financials
8.0
%
Energy
5.5
%
Communication Services
1.6
%
Materials
1.6
%
Consumer Staples
1.5
%
Cash & Other
2.5
%
Top 10 Issuers
(% of Net Assets)
PDF Solutions, Inc.
1.7
%
Ligand Pharmaceuticals, Inc.
1.6
%
Argan, Inc.
1.5
%
Sterling Infrastructure, Inc.
1.5
%
Federal Signal Corp.
1.1
%
UL Solutions, Inc.
1.1
%
MACOM Technology Solutions Holdings, Inc.
1.0
%
MYR Group, Inc.
1.0
%
Terawulf, Inc.
1.0
%
SharkNinja, Inc.
0.9
%
[12]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Small Company Value Portfolio
Class Name Investment Class
Trading Symbol DTSVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Small Company Value Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$107
1.93%
[13]
Expenses Paid, Amount $ 107
Expense Ratio, Percent 1.93%
Net Assets $ 25,307,881
Holdings Count | $ / shares 682
Advisory Fees Paid, Amount $ 33,464
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$25,307,881
Number of Holdings
682
Net Advisory Fee
$33,464
Portfolio Turnover
40%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Financials
26.5
%
Industrials
16.2
%
Consumer Discretionary
12.0
%
Health Care
10.1
%
Real Estate
8.7
%
Energy
7.2
%
Information Technology
5.8
%
Materials
4.8
%
Consumer Staples
3.9
%
Cash & Other
4.8
%
Top 10 Issuers
(% of Net Assets)
Astrana Health, Inc.
2.0
%
Triumph Financial, Inc.
1.6
%
Red Rock Resorts, Inc.
1.5
%
Ryman Hospitality Properties, Inc.
1.5
%
Ducommun, Inc.
1.4
%
Bank OZK
1.2
%
UFP Technologies, Inc.
1.2
%
Magnolia Oil & Gas Corp.
1.1
%
Mesa Laboratories, Inc.
1.1
%
Utz Brands, Inc.
1.0
%
[14]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Small Company Value Portfolio
Class Name Institutional Class
Trading Symbol WSMVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Small Company Value Portfolio (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$87
1.57%
[15]
Expenses Paid, Amount $ 87
Expense Ratio, Percent 1.57%
Net Assets $ 25,307,881
Holdings Count | $ / shares 682
Advisory Fees Paid, Amount $ 33,464
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$25,307,881
Number of Holdings
682
Net Advisory Fee
$33,464
Portfolio Turnover
40%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Financials
26.5
%
Industrials
16.2
%
Consumer Discretionary
12.0
%
Health Care
10.1
%
Real Estate
8.7
%
Energy
7.2
%
Information Technology
5.8
%
Materials
4.8
%
Consumer Staples
3.9
%
Cash & Other
4.8
%
Top 10 Issuers
(% of Net Assets)
Astrana Health, Inc.
2.0
%
Triumph Financial, Inc.
1.6
%
Red Rock Resorts, Inc.
1.5
%
Ryman Hospitality Properties, Inc.
1.5
%
Ducommun, Inc.
1.4
%
Bank OZK
1.2
%
UFP Technologies, Inc.
1.2
%
Magnolia Oil & Gas Corp.
1.1
%
Mesa Laboratories, Inc.
1.1
%
Utz Brands, Inc.
1.0
%
[16]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Wilshire 5000® Index Fund
Class Name Investment Class
Trading Symbol WFIVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire 5000® Index Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$33
0.64%
[17]
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.64%
Net Assets $ 314,613,462
Holdings Count | $ / shares 1,948
Advisory Fees Paid, Amount $ 148,314
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$314,613,462
Number of Holdings
1,948
Net Advisory Fee
$148,314
Portfolio Turnover
6%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
35.0
%
Financials
11.9
%
Industrials
10.2
%
Consumer Discretionary
9.6
%
Health Care
9.5
%
Communication Services
9.2
%
Consumer Staples
4.4
%
Energy
3.2
%
Real Estate
2.2
%
Cash & Other
4.8
%
Top 10 Issuers
(% of Net Assets)
NVIDIA Corp.
6.4
%
Apple, Inc.
5.7
%
Alphabet, Inc.
5.3
%
Microsoft Corp.
3.8
%
Amazon.com, Inc.
3.1
%
Broadcom, Inc.
2.4
%
Tesla, Inc.
1.9
%
Micron Technology, Inc.
1.8
%
Meta Platforms, Inc.
1.7
%
Eli Lilly & Co.
1.4
%
[18]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Wilshire 5000® Index Fund
Class Name Institutional Class
Trading Symbol WINDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire 5000® Index Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$19
0.36%
[19]
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.36%
Net Assets $ 314,613,462
Holdings Count | $ / shares 1,948
Advisory Fees Paid, Amount $ 148,314
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$314,613,462
Number of Holdings
1,948
Net Advisory Fee
$148,314
Portfolio Turnover
6%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Information Technology
35.0
%
Financials
11.9
%
Industrials
10.2
%
Consumer Discretionary
9.6
%
Health Care
9.5
%
Communication Services
9.2
%
Consumer Staples
4.4
%
Energy
3.2
%
Real Estate
2.2
%
Cash & Other
4.8
%
Top 10 Issuers
(% of Net Assets)
NVIDIA Corp.
6.4
%
Apple, Inc.
5.7
%
Alphabet, Inc.
5.3
%
Microsoft Corp.
3.8
%
Amazon.com, Inc.
3.1
%
Broadcom, Inc.
2.4
%
Tesla, Inc.
1.9
%
Micron Technology, Inc.
1.8
%
Meta Platforms, Inc.
1.7
%
Eli Lilly & Co.
1.4
%
[20]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Wilshire Income Opportunities Fund
Class Name Investment Class
Trading Symbol WIORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire Income Opportunities Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$78
1.57%
[21]
Expenses Paid, Amount $ 78
Expense Ratio, Percent 1.57%
Net Assets $ 177,617,700
Holdings Count | $ / shares 1,665
Advisory Fees Paid, Amount $ 389,063
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$177,617,700
Number of Holdings
1,665
Net Advisory Fee
$389,063
Portfolio Turnover
42%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Mortgage Securities
23.2
%
Government
18.0
%
Financial
9.6
%
Asset Backed Securities
6.7
%
Consumer, Cyclical
5.2
%
Consumer, Non-cyclical
5.2
%
Utilities
4.6
%
Energy
4.3
%
Industrial
4.3
%
Cash & Other
18.9
%
Top 10 Issuers
(% of Net Assets)
United States Treasury Note/Bond
6.6
%
Federal National Mortgage Association
5.5
%
Voya VACS Series HYB Fund
2.6
%
United States Treasury Bill
2.0
%
Federal Home Loan Mortgage Corp.
1.9
%
Government National Mortgage Association
1.7
%
BX Trust
1.4
%
Voya VACS Series EMHCD Fund
1.2
%
United States Treasury Inflation Indexed Bonds
1.0
%
Verus Securitization Trust
0.9
%
[22]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Wilshire Income Opportunities Fund
Class Name Institutional Class
Trading Symbol WIOPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire Income Opportunities Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$58
1.16%
[23]
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.16%
Net Assets $ 177,617,700
Holdings Count | $ / shares 1,665
Advisory Fees Paid, Amount $ 389,063
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$177,617,700
Number of Holdings
1,665
Net Advisory Fee
$389,063
Portfolio Turnover
42%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)*
Top Sectors
(% of Net Assets)
Mortgage Securities
23.2
%
Government
18.0
%
Financial
9.6
%
Asset Backed Securities
6.7
%
Consumer, Cyclical
5.2
%
Consumer, Non-cyclical
5.2
%
Utilities
4.6
%
Energy
4.3
%
Industrial
4.3
%
Cash & Other
18.9
%
Top 10 Issuers
(% of Net Assets)
United States Treasury Note/Bond
6.6
%
Federal National Mortgage Association
5.5
%
Voya VACS Series HYB Fund
2.6
%
United States Treasury Bill
2.0
%
Federal Home Loan Mortgage Corp.
1.9
%
Government National Mortgage Association
1.7
%
BX Trust
1.4
%
Voya VACS Series EMHCD Fund
1.2
%
United States Treasury Inflation Indexed Bonds
1.0
%
Verus Securitization Trust
0.9
%
[24]
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Investment Class  
Shareholder Report [Line Items]  
Fund Name Wilshire International Equity Fund
Class Name Investment Class
Trading Symbol WLCTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire International Equity Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Investment Class
$84
1.58%
[25]
Expenses Paid, Amount $ 84
Expense Ratio, Percent 1.58%
Net Assets $ 248,939,720
Holdings Count | $ / shares 1,078
Advisory Fees Paid, Amount $ 1,038,430
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$248,939,720
Number of Holdings
1,078
Net Advisory Fee
$1,038,430
Portfolio Turnover
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors
(% of Net Assets)  
Information Technology
18.8
%
Financials
16.4
%
Industrials
15.7
%
Consumer Discretionary
6.1
%
Health Care
6.0
%
Materials
5.1
%
Consumer Staples
4.5
%
Energy
4.2
%
Mortgage Securities
3.5
%
Cash & Other
19.7
%
Top 10 Issuers
(% of Net Assets)  
Taiwan Semiconductor Manufacturing Co. Ltd.
3.8
%
Voya VACS Series SC Fund
1.9
%
Siemens Energy AG
1.9
%
ASML Holding NV
1.7
%
SK hynix, Inc.
1.7
%
Samsung Electronics Co. Ltd.
1.5
%
Rolls-Royce Holdings PLC
1.5
%
Seagate Technology Holdings PLC
1.3
%
Safran SA
1.0
%
Murata Manufacturing Co. Ltd.
1.0
%
Top Ten Countries
(% of Net Assets)  
United States
13.5
%
Japan
11.3
%
United Kingdom
9.5
%
Taiwan
6.2
%
Germany
5.8
%
Canada
5.1
%
South Korea
4.9
%
France
4.7
%
Netherlands
4.0
%
Cash & Other
35.0
%
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
Institutional Class  
Shareholder Report [Line Items]  
Fund Name Wilshire International Equity Fund
Class Name Institutional Class
Trading Symbol WLTTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Wilshire International Equity Fund (the “Fund”) for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://www.wilshire.com/research-insights/product-literature. You can also request this information by contacting us at 1-866-591-1658.
Additional Information Phone Number 1-866-591-1658
Additional Information Website https://www.wilshire.com/research-insights/product-literature
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment*
Institutional Class
$68
1.28%
[26]
Expenses Paid, Amount $ 68
Expense Ratio, Percent 1.28%
Net Assets $ 248,939,720
Holdings Count | $ / shares 1,078
Advisory Fees Paid, Amount $ 1,038,430
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2026)
Net Assets
$248,939,720
Number of Holdings
1,078
Net Advisory Fee
$1,038,430
Portfolio Turnover
32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (as of June 30, 2026)
Top Sectors
(% of Net Assets)  
Information Technology
18.8
%
Financials
16.4
%
Industrials
15.7
%
Consumer Discretionary
6.1
%
Health Care
6.0
%
Materials
5.1
%
Consumer Staples
4.5
%
Energy
4.2
%
Mortgage Securities
3.5
%
Cash & Other
19.7
%
Top 10 Issuers
(% of Net Assets)  
Taiwan Semiconductor Manufacturing Co. Ltd.
3.8
%
Voya VACS Series SC Fund
1.9
%
Siemens Energy AG
1.9
%
ASML Holding NV
1.7
%
SK hynix, Inc.
1.7
%
Samsung Electronics Co. Ltd.
1.5
%
Rolls-Royce Holdings PLC
1.5
%
Seagate Technology Holdings PLC
1.3
%
Safran SA
1.0
%
Murata Manufacturing Co. Ltd.
1.0
%
Top Ten Countries
(% of Net Assets)  
United States
13.5
%
Japan
11.3
%
United Kingdom
9.5
%
Taiwan
6.2
%
Germany
5.8
%
Canada
5.1
%
South Korea
4.9
%
France
4.7
%
Netherlands
4.0
%
Cash & Other
35.0
%
Updated Prospectus Web Address https://www.wilshire.com/research-insights/product-literature
[1]
* Annualized.
[2]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[3]
* Annualized.
[4]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[5]
* Annualized.
[6]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[7]
* Annualized.
[8]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[9]
* Annualized.
[10]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[11]
* Annualized.
[12]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[13]
* Annualized.
[14]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[15]
* Annualized.
[16]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[17]
* Annualized.
[18]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[19]
* Annualized.
[20]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[21]
* Annualized.
[22]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[23]
* Annualized.
[24]
* The Global Industry Classification Standard (“GICS®”) was developed by and/or is the exclusive property of MSCI, Inc. (“MSCI”) and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI and S&P and has been licensed for use by U.S. Bank Global Fund Services.
[25]
* Annualized.
[26]
* Annualized.