Concentration of Credit Risk (Details) - Customer Concentration Risk [Member] - Accounts Receivable [Member]	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Six Customers [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	70.00%
Customer One [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	26.00%	38.00%
Customer Two [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	14.00%	20.00%
Customer Three [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	11.00%	10.00%
Customer Four [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	7.00%	7.00%
Customer Five [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	7.00%	4.00%
Customer Six [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage	6.00%
Five Customers [Member]
Concentration of Credit Risk [Line Items]
Total accounts receivable balance percentage		79.00%

ESPEY MFG & ELECTRONICS CORP 10-K