Significant Accounting Policies (Narrative) (Details)			1 Months Ended		12 Months Ended
	Nov. 03, 2021 USD ($)	Nov. 03, 2020 USD ($)	Dec. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)	Jun. 30, 2022 USD ($) item	Jun. 30, 2021 USD ($)
Operating Loss Carryforwards [Line Items]
Other income - Net gain from life insurance benefits			$ 262,000		$ 262,391
Income Tax Expense (Benefit)					$ 7,517	$ 4,125
Number Of Subsidiaries | item					2
Research and Development Expense					$ 285,244	410,602
Advertising Expense					50,513	33,976
Other income				$ 100,000	362,390	885,505
Legal Fees				$ 100,000
(Benefit) provision for deferred compensation					(160,120)	308,000
Deferred Compensation Arrangement with Individual, Distribution Paid					71,250	150,000
Deferred Compensation Arrangement with Individual, Compensation Expense					$ (472,883)
Koss Corp B.V. [Member]
Operating Loss Carryforwards [Line Items]
Ownership Percentage					100.00%
Koss UK [Member]
Operating Loss Carryforwards [Line Items]
Ownership Percentage					100.00%
Director [Member]
Operating Loss Carryforwards [Line Items]
Other income					$ 378,805
Former Officer [Member]
Operating Loss Carryforwards [Line Items]
Deferred Compensation Arrangement with Individual, Distribution Paid						$ 71,250
Deferred Compensation Arrangement with Individual, Compensation Expense					$ 472,883
SBA Loan [Member]
Operating Loss Carryforwards [Line Items]
Debt forgiven	$ 506,700	$ 506,700