Condensed Financial Statements of Parent Company (Additional Information) (Details) - $ / shares	Dec. 31, 2021	Apr. 30, 2021	Dec. 31, 2020
Preferred stock, par value	$ 1.00	$ 1.00	$ 1.00
Preferred stock, shares authorized	250,000		250,000
Preferred Stock, Shares Issued	1,500	1,500
Common stock, par value	$ 2.50		$ 2.50
Common stock, shares authorized	20,000,000		20,000,000
Common stock, shares issued	12,763,827		12,985,708
Common stock, shares outstanding	12,743,125		12,942,004
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares	20,702		43,704