CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2023	Jun. 30, 2022
Preferred stock, par value (in US$ per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, issued (in shares)	0	14,700
Preferred Stock, outstanding (in shares)	0
Common stock, par value (in US$ per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	50,000,000
Common stock, shares issued (in shares)	20,142,973	20,142,973
Common stock, shares outstanding (in shares)	18,464,966	18,464,966
Preferred stock, liquidation preference (in dollars per share)		$ 17,346,000
Cumulative Preferred Stock
Preferred stock, shares authorized (in shares)	21,000	21,000