Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Debt securities, available-for-sale, allowance for credit loss, current	$ 0	$ (112)
Debt securities, held-to-maturity, allowance for credit loss	0	0
Estimated Fair Value	78,206	0
Loans held for sale, fair value	$ 1,254,632	$ 1,001,807
Preferred stock, par or stated value per share (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 or stated value per share (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	200,000,000
Common stock, shares, issued (in shares)	72,017,126	71,753,705
Treasury stock, shares (in shares)	2,407,898	2,212,224