Other Noninterest Income and Other Noninterest Expense (Components of Other Noninterest Income and Other Noninterest Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other noninterest income:
Income from bank-owned life insurance	$ 15,454	$ 15,881	$ 18,330
Credit-related fees	12,557	10,483	11,001
Income from derivatives	420	5,832	13,477
Net gains on sales of premises, equipment and other assets	19,388	3,096	1,423
Other miscellaneous income	23,617	18,619	30,570
Total other noninterest income	71,436	53,911	74,801
Other noninterest expense:
Corporate value and franchise taxes	20,355	16,744	14,478
Advertising	13,454	13,783	12,441
Telecommunication and postage	10,773	11,870	12,646
Entertainment and contributions	10,664	10,336	7,867
Tax credit investment amortization	5,791	4,768	4,436
Travel expenses	5,469	4,336	2,697
Printing and supplies	4,073	3,795	3,728
Other retirement expense	(13,460)	(29,693)	(27,941)
Loss on facilities and equipment from consolidation			13,863
Loss on extinguishment of debt			4,165
Other miscellaneous expense	31,573	22,256	32,829
Total other noninterest expense	$ 88,692	$ 58,195	$ 81,209