Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Capital stock, par value (in dollars per share)	$ 1	$ 1
Serial preferred stock, shares authorized (in shares)	632,470	632,470
Serial preferred stock, shares issued (in shares)	0	0
Serial preferred stock, shares outstanding (in shares)	0	0
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	18,559,230	18,292,490
Treasury stock, shares (in shares)	4,157,153	4,059,619