Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Held-To-Maturity Securities, at Fair Value	$ 201,292	$ 226,576
Preferred Stock, Par Value (in dollars per share)	$ 1	$ 1
Preferred Stock, Shares Authorized (in shares)	1,000,000	1,000,000
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)	20,800,144	20,194,474
Treasury Stock, Shares (in shares)	4,759,414	4,678,736