Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income	$ 85,847	$ 104,865
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	2,591	2,547
Provision for credit losses	10,575	10,522
Deferred income taxes	939	776
Net amortization of discount/premiums on debt securities	2,056	2,039
Net amortization on loan discount/premiums	1,004	2,108
Amortization of intangible assets	1,991	2,375
Amortization of servicing assets	606	1,006
Mortgage loans originated-for-sale	(14,177)	(9,578)
Proceeds from mortgage loans sold	14,017	10,279
Sale of investment securities	0	(381)
Sale of SBA loans	(1,415)	(501)
Sale of other real estate	2	(188)
Sale of fixed assets	0	(10)
Sale of state tax credits	(769)	(215)
Share-based compensation	5,014	5,134
Net change in other assets and liabilities	(1,884)	8,988
Net cash provided by operating activities	106,397	139,786
Cash flows from investing activities:
Net increase in loans	(150,911)	(789,370)
Sale of debt securities, available-for-sale	0	28,741
Paydown or maturity of debt securities, available-for-sale	107,671	119,794
Paydown or maturity of debt securities, held-to-maturity	3,471	3,623
Redemption of other investments	50,387	75,843
Sale of SBA loans	25,090	9,502
Sale of state tax credits held for sale	4,319	1,225
Sale of other real estate	207	457
Sale of fixed assets	0	43
Payments for the purchase of:
Available-for-sale debt securities	(127,647)	(154,787)
Held-to-maturity debt securities	(28,480)	(21,146)
Other investments	(57,134)	(76,454)
State tax credits held for sale	(2,803)	(75)
Fixed assets	(4,741)	(1,603)
Net cash used in investing activities	(180,571)	(804,207)
Cash flows from financing activities:
Net decrease in noninterest-bearing deposit accounts	(30,435)	(762,171)
Net increase in interest-bearing deposit accounts	136,447	1,552,881
Net increase in FHLB advances	78,000	50,000
Repayments of notes payable	(11,429)	(2,857)
Net decrease in other borrowings	(108,131)	(121,872)
Repurchase of common stock	(8,596)	0
Cash dividends paid on common stock	(19,106)	(18,668)
Cash dividends paid on preferred stock	(1,875)	(1,875)
Other	(955)	(353)
Net cash provided by financing activities	33,920	695,085
Net increase (decrease) in cash and cash equivalents	(40,254)	30,664
Cash and cash equivalents, beginning of period	433,029	291,359
Cash and cash equivalents, end of period	392,775	322,023
Cash paid during the period for:
Interest	142,563	74,691
Income taxes	14,401	21,703
Noncash investing and financing transactions:
Transfer to other bank owned assets	3,219	0
Right-of-use assets obtained in exchange for lease obligations	$ 985	$ 3,137