| Cover | Aug. 29, 2022 |
| Entity Addresses [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 29, 2022 |
| Entity File Number | 001-40897 |
| Entity Registrant Name | GESHER I ACQUISITION CORP. |
| Entity Central Index Key | 0001853314 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | PO Box 309 |
| Entity Address, Address Line Two | Ugland House |
| Entity Address, City or Town | Grand Cayman |
| Entity Address, Country | KY |
| Entity Address, Postal Zip Code | KY1-1104 |
| City Area Code | 212 |
| Local Phone Number | 993-1562 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one ordinary share, $0.0001 par value, and one-half of one redeemable warrant | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one ordinary share, $0.0001 par value, and one-half of one redeemable warrant |
| Trading Symbol | GIACU |
| Security Exchange Name | NASDAQ |
| Ordinary shares, par value $0.0001 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Ordinary shares, par value $0.0001 per share |
| Trading Symbol | GIAC |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, exercisable for ordinary shares at an exercise price of $11.50 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, exercisable for ordinary shares at an exercise price of $11.50 per share |
| Trading Symbol | GIACW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Entity Addresses [Line Items] | |
| Entity Address, Address Line One | Hagag Towers |
| Entity Address, Address Line Two | North Tower, Floor 24 |
| Entity Address, Address Line Three | Haarba 28 |
| Entity Address, City or Town | Tel Aviv |
| Entity Address, Country | IL |
