CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Stockholders’ equity
Capital Stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common Stock
Stockholders’ equity
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	30,218,000	30,006,000
Treasury stock, shares (in shares)	15,128,000	15,140,000
Class A Common Stock
Stockholders’ equity
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	1,806,000	1,806,000
Treasury stock, shares (in shares)	522,000	522,000