CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED BALANCE SHEETS
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, authorized shares (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)	$ 1.00	$ 1.00
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)	15,518,819	15,759,090
Treasury stock, shares (in shares)	511,353	271,082