Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 606,261	$ 975,543
Securities available for sale, at fair value (amortized cost: $1,900,980 - 2024 $1,959,007-2023; allowance for credit losses (ACL): $0)	1,702,299	1,762,878
Securities held to maturity, net of ACL of $0 (fair value: $1,333,014 - 2024; $1,355,504-2023)	1,415,025	1,426,279
Loans held for sale (LHFS)	172,937	184,812
Loans held for investment (LHFI)	13,057,943	12,950,524
Less ACL, LHFI	142,998	139,367
Net LHFI	12,914,945	12,811,157
Premises and equipment, net	232,924	232,537
Mortgage servicing rights (MSR)	138,044	131,870
Goodwill	384,237	384,237
Identifiable intangible assets, net	2,845	2,965
Other real estate, net	7,620	6,867
Operating lease right-of-use assets	36,659	38,142
Other assets	762,816	764,902
Total Assets	18,376,612	18,722,189
Deposits:
Noninterest-bearing	3,039,652	3,197,620
Interest-bearing	12,298,905	12,372,143
Total deposits	15,338,557	15,569,763
Federal funds purchased and securities sold under repurchase agreements	393,215	405,745
Other borrowings	482,027	483,230
Subordinated notes	123,537	123,482
Junior subordinated debt securities	61,856	61,856
ACL on off-balance sheet credit exposures	33,865	34,057
Operating lease liabilities	40,185	41,584
Other liabilities	220,771	340,625
Total Liabilities	16,694,013	17,060,342
Shareholders' Equity
Authorized: 250,000,000 Issued and outstanding: 61,178,366 shares - 2024; 61,071,173 shares - 2023	12,747	12,725
Capital surplus	160,521	159,688
Retained earnings	1,736,485	1,709,157
Accumulated other comprehensive income (loss), net of tax	(227,154)	(219,723)
Total Shareholders' Equity	1,682,599	1,661,847
Total Liabilities and Shareholders' Equity	$ 18,376,612	$ 18,722,189