Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Debt securities, held-to-maturity, allowance for credit loss	$ 0	$ 0
Debt securities held-to-maturity	$ 82,489	$ 78,206
Preferred stock, stated value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares Issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	72,212,322	72,017,126
Treasury stock, shares (in shares)	2,773,238	2,407,898