Shareholder Report, Line Graph (Details) 199958_Wilshire Global Allocation Fund_TF_TSR Annual {TF} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2025 |
|
| Wilshire Global Allocation Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Accumulated Value | $ 17,757 | $ 15,993 | $ 13,735 | $ 16,715 | $ 14,945 | $ 13,352 | $ 11,275 | $ 12,164 | $ 10,562 | $ 10,000 | $ 20,849 |
| MSCI ACWI Net Total Return Index (USD) [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Net Total Return Index (USD) | ||||||||||
| Accumulated Value | 24,769 | 21,082 | 17,252 | 21,133 | 17,828 | 15,335 | 12,113 | 13,372 | 10,786 | 10,000 | $ 30,302 |
| Bloomberg Global Aggregate USD Hedged [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate USD Hedged | ||||||||||
| Accumulated Value | 12,078 | 11,681 | 10,902 | 12,280 | 12,453 | 11,795 | 10,899 | 10,710 | 10,395 | 10,000 | $ 12,665 |
| 65/35 MSCI ACWI IMI/Bloomberg Global Agg (Hedged) [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | 65/35 MSCI ACWI IMI/Bloomberg Global Agg(Hedged) | ||||||||||
| Accumulated Value | $ 19,372 | $ 17,338 | $ 14,884 | $ 17,658 | $ 15,895 | $ 14,040 | $ 11,704 | $ 12,434 | $ 10,697 | $ 10,000 | $ 22,444 |