Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Consolidated Balance Sheets [Abstract]
Trade receivables, allowance for doubtful accounts	$ 2,460	$ 2,600
Common stock, par value	$ 1	$ 1
Common stock, authorized	15,000,000	15,000,000
Common stock, issued	8,357,000	8,292,000
Common stock, outstanding	5,163,000	5,174,000
Treasury stock, shares	3,194,000	3,118,000