Significant Accounting Policies Deferred revenue (Tables)

12 Months Ended

Jun. 30, 2022

Revenue Recognition and Deferred Revenue [Abstract]

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

	Years ended June 30,
	2022		2021
Beginning of Year	$	364,000	$	516,000
Additions	692,000		772,000
Revenue Recognized	(723,000)		(924,000)
End of Year	$	333,000	$	364,000