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EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |
Company contributions | $ 79,240 | $ 80,831
Matching contributions, percent | 25.00% | 25.00%
Koss Employee Stock Ownership Trust [Member] |  |
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |
Contributions | $ 0 | $ 0

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480489/718-40-50-1 + Details
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- Definition 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. + References No definition available. + Details
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- Details
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