XML 66 R54.htm IDEA: XBRL DOCUMENT v3.21.2

Leases (Narrative) (Details)	12 Months Ended
	Jun. 30, 2021 USD ($)
Note To Financial Statement Details Textual
Lease Extension Per Year	$ 380,000
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

- References

No definition available.

+ Details

Name:	koss_NoteToFinancialStatementDetailsTextual
Namespace Prefix:	koss_
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=121609121&loc=SL77918673-209980

+ Details

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