| Label | Element | Value |
|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |
| Document Type | dei_DocumentType | 485BPOS |
| Document Period End Date | dei_DocumentPeriodEndDate | Dec. 31, 2022 |
| Registrant Name | dei_EntityRegistrantName | WILSHIRE VARIABLE INSURANCE TRUST |
| Entity Central Index Key | dei_EntityCentralIndexKey | 0001026708 |
| Amendment Flag | dei_AmendmentFlag | false |
| Document Creation Date | dei_DocumentCreationDate | Apr. 14, 2023 |
| Document Effective Date | dei_DocumentEffectiveDate | Apr. 30, 2023 |
| Prospectus Date | rr_ProspectusDate | Apr. 30, 2023 |
| Entity Inv Company Type | dei_EntityInvCompanyType | N-1A |