Consolidated Balance Sheet — Unaudited (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for credit losses, available for sale securities	$ 3,849	$ 578
Loans held for sale at fair value	$ 25,520	$ 322
Preferred stock, par value (usd per share)	$ 1.00	$ 1.00
Preferred stock, liquidation preference (usd per share)	$ 25.00	$ 25.00
Preferred stock, shares authorized (shares)	100,000,000	100,000,000
Preferred stock, shares issued (shares)	5,700,000	5,700,000
Preferred stock, shares outstanding (shares)	5,700,000	5,700,000
Common stock, par value (usd per share)	$ 1.00	$ 1.00
Common stock, shares authorized (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	35,329,690	35,012,250
Common stock, shares outstanding (shares)	31,311,254	32,373,697
Treasury stock (shares)	4,018,436	2,638,553