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PRODUCT SOFTWARE DEVELOPMENT EXPENDITURES - NARRATIVE (Details) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2014 | Sep. 30, 2013 | Jun. 30, 2013
Capitalized Computer Software, Net [Abstract] |  |  |
Capitalized computer software, amortization period | 3 years |  |
Remaining 9/30/13 asset value charged to Statement of Operations line item titled Impairment of capitalized software, inventory and related items | $ 0 | $ 2,308,752 | $ 2,673,291

X
- Definition Capitalized Computer Software, Amortization Period + References No definition available. + Details
Name: | koss_CapitalizedComputerSoftwareAmortizationPeriod
Namespace Prefix: | koss_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The carrying amount of capitalized product software expenditures, net of accumulated amortization, as of the balance sheet date. + References No definition available. + Details
Name: | koss_ProductSoftwareDevelopmentExpendituresNet
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_CapitalizedComputerSoftwareNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration