INTEREST EXPENSE (Details) (USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Interest Expense [Abstract]
Interest expense (benefit) on secured credit facility	$ 0us-gaap_InterestExpenseDebt	$ 0us-gaap_InterestExpenseDebt	$ 12,813us-gaap_InterestExpenseDebt	$ (587)us-gaap_InterestExpenseDebt
Interest expense for tax positions related to unauthorized transactions	0	0	0	16,386
Interest reversals for tax positions related to unauthorized transactions	0	(65,536)	0	(65,536)
Interest expense (income)	$ 0	$ (65,536)	$ 12,813	$ (49,737)

Interest expense recognized during the period for tax positions related to unauthorized transactions

No definition available.

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

- Definition

The cost of borrowed funds accounted for as interest that was charged against earnings during the period. In addition, this element represents the total of interest expense computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

+ References

No definition available.

+ Details

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

- Definition

Interest expense reversed during the period for tax positions related to unauthorized transactions

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_InterestExpenseAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

+ Details

Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration