CREDIT FACILITY (Details) (USD $)	Jun. 30, 2012 Rate	Jun. 30, 2011 Rate
Line of Credit Facility [Line Items]
Revolving credit maximum	$ 8,000,000
Percent over prime, depending on Company's leverage ratio, minimum	0.00%
Percent over prime, depending on Company's leverage ratio, maximum	0.75%
Percent over LIBOR, depending on Company's leverage ratio, minimum	2.00%
Percent over LIBOR, depending on Company's leverage ratio, maximum	3.00%
Unused capacity, commitment fee percentage, minimum	0.30%
Unused capacity, commitment fee percentage, maximum	0.45%
Letter of credit sublimit	2,000,000
Outstanding balance	0	1,400,000
Interest rate at period end		2.49%
Line of Credit Facility, group one
Line of Credit Facility [Line Items]
Outstanding balance		1,000,000
Interest rate at period end		2.19%
Line of Credit Facility, group two
Line of Credit Facility [Line Items]
Outstanding balance		$ 400,000
Interest rate at period end		3.25%

Line of Credit Facility, percent over LIBOR, depending on Company's leverage ratio, maximum

No definition available.

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- Definition

Line of Credit Facility, percent over LIBOR, depending on Company's leverage ratio, minimum

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, percent over prime, depending on Company's leverage ratio, maximum

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Percent Over Prime, Depending Upon Company Leverage Ratio, Minimum

+ References

No definition available.

+ Details

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- Definition

The maximum fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	koss_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

The minimum fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	koss_
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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for financing purchases of goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The effective interest rate at the end of the reporting period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant