CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Mar. 31, 2025	Dec. 31, 2024
CONSOLIDATED BALANCE SHEETS
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, authorized (in shares)	30,000	30,000
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	16,030,172	16,030,172
Common stock, shares outstanding (in shares)	15,482,848	15,433,494
Treasury stock, shares (in shares)	547,324	596,678