PRODUCT SOFTWARE DEVELOPMENT EXPENDITURES - NARRATIVE (Details) (USD $)	12 Months Ended
Jun. 30, 2013
Capitalized Computer Software, Net [Abstract]
Capitalized computer software, amortization period	3 years
Expected future amortization of capitalized software, FY2014	$ 1,458,159
Expected future amortization of capitalized software, FY2015	$ 1,215,132

Capitalized Software, Expected Future Amortization in Year Three

No definition available.

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