Employee Stock Ownership Plan (Narrative) (Details) - shares	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Koss Employee Stock Ownership Trust [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period	0	0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details