| Document And Entity Information | Nov. 13, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 13, 2024 |
| Entity Registrant Name | Loar Holdings Inc. |
| Entity Central Index Key | 0002000178 |
| Entity Emerging Growth Company | true |
| Entity File Number | 001-42030 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 82-2665180 |
| Entity Address, Address Line One | 20 New King Street |
| Entity Address, City or Town | White Plains |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10604 |
| City Area Code | 914 |
| Local Phone Number | 909-1311 |
| Entity Information, Former Legal or Registered Name | Not applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Ex Transition Period | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | LOAR |
| Security Exchange Name | NYSE |
