Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity securities, at fair value	$ 195,862	$ 201,292	$ 221,360
STOCKHOLDERS’ EQUITY
Preferred Stock, par value (in dollars per share)	$ 1	$ 1	$ 1
Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000	1,000,000
Common Stock, par value (in dollars per share)	$ 1	$ 1	$ 1
Common Stock, shares authorized (in shares)	30,000,000	30,000,000	30,000,000
Common Stock, shares issued (in shares)	20,800,144	20,800,144	20,194,474
Treasury Stock (in shares)	4,787,183	4,759,414	4,651,719