Significant Accounting Policies Deferred revenue (Tables)

12 Months Ended

Jun. 30, 2023

Revenue Recognition and Deferred Revenue [Abstract]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

	Years ended June 30,
	2023		2022
Beginning of Year	$	333,000	$	364,000
Additions	717,000		692,000
Revenue Recognized	(624,000)		(722,000)
End of Year	$	426,000	$	333,000