Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Consolidated Balance Sheets [Abstract]
Trade receivables, allowance for doubtful accounts	$ 2,600	$ 2,980
Common stock, par value	$ 1	$ 1
Common stock, authorized	15,000,000	15,000,000
Common stock, issued	8,292,000	8,190,000
Common stock, outstanding	5,174,000	5,300,000
Treasury stock, shares	3,117,930	2,890,000