Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized (in shares)	20,000	20,000
Preferred stock, shares issued (in shares)	733	733
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	12,068,627	11,995,366
Common stock, shares outstanding (in shares)	11,889,001	11,944,289
Treasury stock, shares (in shares)	179,626	51,077