Fees and Expenses - Wilshire Global Allocation Fund	Apr. 30, 2026
Prospectus [Line Items]
Expense Heading [Optional Text]	Fees and Expenses of the Global Allocation Fund
Expense Narrative [Text Block]	This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. The table below does not reflect expenses that apply to separate accounts or related variable contracts, and if such expenses were reflected, fees would be higher.
Operating Expenses Caption [Optional Text]	Annual Fund Operating Expenses(1) (expenses that you pay each year as a percentage of the value of your investment):
Expense Example [Heading]	Example:
Expense Example Narrative [Text Block]	This example is intended to help you compare the cost of investing in the Global Allocation Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Global Allocation Fund’s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related variable contracts, and if such expenses were reflected, fees would be higher.
Expense Example by, Year, Caption [Text]	Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Portfolio Turnover [Heading]	Portfolio Turnover
Portfolio Turnover [Text Block]	The Global Allocation 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. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Global Allocation Fund’s performance. For the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 17% of the average value of its portfolio.
Portfolio Turnover, Rate	17.00%

Fees and Expenses - Wilshire Global Allocation Fund

Apr. 30, 2026

Fees and Expenses of the Global Allocation Fund

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. The table below does not reflect expenses that apply to separate accounts or related variable contracts, and if such expenses were reflected, fees would be higher.

Operating Expenses Caption [Optional Text]

Annual Fund Operating Expenses(1) (expenses that you pay each year as a percentage of the value of your investment):

Expense Example [Heading]

Example:

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Global Allocation Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Global Allocation Fund’s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related variable contracts, and if such expenses were reflected, fees would be higher.

Expense Example by, Year, Caption [Text]

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

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover [Text Block]

The Global Allocation 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. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Global Allocation Fund’s performance. For the fiscal year ended December 31, 2025, the Fund’s portfolio turnover rate was 17% of the average value of its portfolio.

Portfolio Turnover, Rate

17.00%