Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 29, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-6747
Entity Registrant Name	The Gorman-Rupp Company
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-0253990
Entity Address, Address Line One	600 South Airport Road
Entity Address, City or Town	Mansfield
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44903
City Area Code	419
Local Phone Number	755-1011
Title of 12(b) Security	Common Shares, without par value
Trading Symbol	GRC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		26,210,986
Entity Central Index Key	0000042682
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false