| Cover | Mar. 12, 2024 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | This Amendment No. 1 to Current Report on Form 8-K (this “Form 8-K/A”) amends and restates the Current Report on Form 8-K of MariaDB plc, an Irish public limited corporation (the “Company”) filed with the U.S. Securities and Exchange Commission on March 18, 2024 (the “Original Form 8-K”), which, among other things, reported that the Company elected to not renew the terms of its Chief Executive Officer’s, Paul O’Brien, Employment Agreement and Mr. O’Brien’s resignation from the Board of Directors. This Form 8-K/A is being filed to amend and restate Item 5.02 of the Original Form 8-K to include a directors’ responsibility statement pursuant to the Irish Takeover Panel Act 1997, Takeover Rules, 2022 and details regarding the vacation of Mr. O’Brien’s office as a director of the Company. |
| Document Period End Date | Mar. 12, 2024 |
| Entity File Number | 001-41571 |
| Entity Registrant Name | MariaDB plc |
| Entity Central Index Key | 0001929589 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | L2 |
| Entity Address, Address Line One | 699 Veterans Blvd |
| Entity Address, City or Town | Redwood City |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94063 |
| City Area Code | (855) |
| Local Phone Number | 562-7423 |
| 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 |
| Ordinary Shares, nominal value $0.01 per share | |
| Title of 12(b) Security | Ordinary Shares, nominal value $0.01 per share |
| Trading Symbol | MRDB |
| Security Exchange Name | NYSE |
| Warrants, each whole warrant exercisable for one Ordinary Share at an exercise price of $11.50 per share | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one Ordinary Share at an exercise price of $11.50 per share |
| Trading Symbol | MRDBW |
| Security Exchange Name | NYSE |
