Document And Entity Information - shares	6 Months Ended
	Dec. 31, 2023	Feb. 09, 2024
Document Information Line Items
Entity Registrant Name	ESPEY MFG. & ELECTRONICS CORP.
Trading Symbol	ESP
Document Type	10-Q
Current Fiscal Year End Date	--06-30
Entity Common Stock, Shares Outstanding		2,710,933
Amendment Flag	false
Entity Central Index Key	0000033533
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Dec. 31, 2023
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-4383
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	14-1387171
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	245-4400
Title of 12(b) Security	Common Stock $.33-1/3 par value
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes