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UNAUTHORIZED TRANSACTION RELATED RECOVERIES, UNAUTHORIZED TRANSACTION RELATED RECOVERIES, NET (Details) (USD $) | 12 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Unauthorized Transactions, Related Recoveries, Net [Abstract] |  |
Legal fees incurred | $ 2,598,454 | $ 987,285
Insurance proceeds | (15,014) | (867,711)
Gross proceeds from the settlement of the third party lawsuit | (8,500,000) | 0
401(k) and KESOT proceeds | 0 | (229,510)
Proceeds from asset forfeitures | (1,670,487) | (1,118,463)
CEO bonus reimbursements | 0 | (242,419)
Total recoveries | (10,185,501) | (2,458,103)
Unauthorized transaction related recoveries, net | $ (7,587,047) | $ (1,470,818)

X
- Definition Former VP of Finance's 401(k) forfeiture and KESOT (Koss Employee Stock Ownership Trust) forfeiture proceeds included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingency401KAndKesotProceeds
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition CEO bonus reimbursements for restated fiscal years, included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyCeoBonusReimbursements
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gross proceeds from legal settlements included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_Gaincontingencygrossproceedsfromlegalsettlements
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Insurance proceeds included in income for the period + References No definition available. + Details
Name: | koss_GainContingencyInsuranceProceeds
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Legal fees charged to expense during the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyLegalFees
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from former VP of Finance's assets forfeited included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyProceedsFromAssetForfeitures
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total recoveries included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyTotalRecoveries
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the total of net expenses related to recognition of unauthorized transactions in accounts during the reporting period from the previous years, for example, legal expenses recoveries denote recoveries from insurance claims. + References No definition available. + Details
Name: | koss_UnauthorizedTransactionRelatedCostsAndRecoveriesNet
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | koss_UnauthorizedTransactionsRelatedRecoveriesNetAbstract
Namespace Prefix: | koss_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration