CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2022	Jun. 30, 2021
Accounts Receivable, Allowance for Credit Loss, Current	$ 369,000	$ 325,000
Preferred stock, par value (in US$ per share)	$ 1.00	$ 1.00
Preferred Stock, Shares Authorized (in shares)	500,000	500,000
Preferred Stock, Shares Outstanding	14,700	14,700
Preferred stock, issued (in shares)	14,700	14,700
Liquidation preference	$ 17,196,000	$ 16,752,000
Common stock, par value (in US$ per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	18,300,855	17,852,793
Common stock, shares outstanding (in shares)	18,300,855	17,852,793
Preferred Class A [Member]
Preferred stock, par value (in US$ per share)	$ 1,170
Preferred Stock, Shares Authorized (in shares)	21,000	21,000
Preferred stock, issued (in shares)	14,700
Liquidation preference	$ 17,196,000