| Document and Entity Information | Aug. 07, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Entity Registrant Name | Kaltura, Inc. |
| Entity File Number | 001-40644 |
| Entity Tax Identification Number | 20-8128326 |
| Entity Address, Address Line One | 860 Broadway |
| Entity Address, Address Line Two | 3rd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10003 |
| City Area Code | (646) |
| Local Phone Number | 290-5445 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | DE |
| Entity Central Index Key | 0001432133 |
| Amendment Flag | false |
| Document Period End Date | Aug. 07, 2022 |
| Common Stock | |
| Cover [Abstract] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Security Exchange Name | NASDAQ |
| Trading Symbol | KLTR |
| Class of Stock [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | KLTR |
| Security Exchange Name | NASDAQ |
| Preferred Stock | |
| Cover [Abstract] | |
| Title of 12(b) Security | Preferred Stock Purchase Rights |
| Class of Stock [Line Items] | |
| Title of 12(b) Security | Preferred Stock Purchase Rights |
