UNAUTHORIZED TRANSACTION RELATED COSTS AND RECOVERIES (Details) (USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Unauthorized Transactions, Costs and Related Recoveries, Net [Abstract]
Legal fees incurred	$ 37,500koss_GainContingencyLegalFees	$ 86,391koss_GainContingencyLegalFees	$ 114,992koss_GainContingencyLegalFees	$ 306,375koss_GainContingencyLegalFees
Proceeds from asset forfeitures	(36,422)	(317,553)	(36,422)	(1,134,082)
Unauthorized transaction related costs and (recoveries), net	$ 1,078	$ (231,162)	$ 78,570	$ (827,707)

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.

No definition available.

Name:	koss_UnauthorizedTransactionRelatedCostsAndRecoveriesNet
Namespace Prefix:	koss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration