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Cover
Oct. 08, 2021
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 08, 2021
Entity File Number 001-04383
Entity Registrant Name ESPEY MFG & ELECTRONICS CORP.
Entity Central Index Key 0000033533
Entity Tax Identification Number 14-1387171
Entity Incorporation, State or Country Code NY
Entity Address, Address Line One 233 Ballston Avenue
Entity Address, City or Town Saratoga Springs
Entity Address, State or Province NY
Entity Address, Postal Zip Code 12866
City Area Code 518
Local Phone Number 584-4100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock $.33-1/3 par value
Trading Symbol ESP
Security Exchange Name NYSEAMER
Commonstockpurchaserights [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock Purchase Rights
No Trading Symbol Flag true
Security Exchange Name NYSEAMER