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EMPLOYEE BENEFIT PLANS, RETIREMENT SAVINGS PLAN UNDER SECTION 401(K) (Details) (USD $) | 12 Months Ended
--- | ---
Jun. 30, 2014 Rate | Jun. 30, 2013 Rate
Compensation and Retirement Disclosure [Abstract] |  |
Company match, percentage | 100.00% | 100.00%
Company contributions | $ 431,190 | $ 425,301

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- Definition Defined Contribution Plan, Company Match + References No definition available. + Details
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Namespace Prefix: | koss_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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Namespace Prefix: | us-gaap_
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