XML 36 R25.htm IDEA: XBRL DOCUMENT v3.21.2

Related Party Leases (Details)	3 Months Ended
	Sep. 30, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Lease Extension Per Year	$ 380,000
Lessee, Operating Lease, Renewal Term (Year)	5 years
Additional Renewal [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term (Year)	5 years

X

- Definition

The amount of lease extension per year.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=koss_AdditionalRenewalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: