Document and Entity Information |
Aug. 28, 2025 |
|---|---|
| Cover [Abstract] | |
| Entity Registrant Name | GRAHAM CORP |
| Amendment Flag | true |
| Entity Central Index Key | 0000716314 |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 28, 2025 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-08462 |
| Entity Tax Identification Number | 16-1194720 |
| Entity Address, Address Line One | 20 Florence Avenue |
| Entity Address, City or Town | Batavia |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 14020 |
| City Area Code | (585) |
| Local Phone Number | 343-2216 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.10 per share |
| Trading Symbol | GHM |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | On September 3, 2025, Graham Corporation (the “Company”) filed a Current Report on Form 8-K (the “Original Report”) to report the appointment of Mauro Gregorio to the Board of Directors of the Company (the “Board”). The Company is hereby filing this Current Report on Form 8-K/A (the “Amendment”) to amend Item 5.02 of the Original Report to report Mr. Gregorio’s appointment to certain committees of the Board. |