Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information
9 Months Ended
Dec. 31, 2012
Feb. 01, 2013
Document and Entity Information [Abstract]    
Entity Registrant Name GRAHAM CORP  
Entity Central Index Key 0000716314  
Document Type 10-Q  
Document Period End Date Dec. 31, 2012  
Amendment Flag false  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --03-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   10,002,292