Document And Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2023	Sep. 19, 2023	Dec. 31, 2022
Document Information Line Items
Entity Registrant Name	ESPEY MFG. & ELECTRONICS CORP.
Trading Symbol	ESP
Document Type	10-K
Current Fiscal Year End Date	--06-30
Entity Common Stock, Shares Outstanding		2,706,633
Entity Public Float			$ 27,145,853
Amendment Flag	false
Entity Central Index Key	0000033533
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Jun. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Document Annual 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	584-4100
Title of 12(b) Security	Common Stock $.33-1/3 par value
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Document Financial Statement Error Correction [Flag]	false
Auditor Firm ID	317
Auditor Name	Freed Maxick CPAs, P.C.
Auditor Location	Buffalo, New York