Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Consolidated Balance Sheets
Common stock, par value (in dollars per share)	$ 4	$ 4
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	1,473,469	1,466,516
Common stock, shares outstanding (in shares)	1,473,469	1,466,516