Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 195,771	$ 144,244
Interest-bearing deposits in banks	316,082	2,147,266
Federal funds and other short-term investments	135,000	27,000
Cash and cash equivalents	646,853	2,318,510
Debt securities available-for-sale	3,614,333	4,496,824
Debt securities held-to-maturity (fair value $2,191,073 and $1,148,804, respectively)	2,613,648	1,156,098
Loans held for sale at fair value	13,600	44,109
Loans and leases held for investment	15,334,627	11,760,346
Less allowance for credit losses - loans and leases	(159,357)	(102,532)
Loans and leases, net	15,175,270	11,657,814
Premises and equipment, net	298,456	245,296
Bank owned life insurance	299,297	217,713
Accrued interest receivable	72,807	42,999
Net deferred tax asset	129,313	41,322
Derivative financial instruments	50,636	42,480
Goodwill and other intangible assets, net	779,248	472,407
Other assets	315,423	211,199
Total assets	24,008,884	20,946,771
Deposits [Abstract]
Noninterest-bearing demand	7,643,081	6,956,981
Interest-bearing deposits	12,233,426	11,284,198
Total deposits	19,876,507	18,241,179
Short-term borrowings	158,933	0
Federal Home Loan Bank advances	550,000	0
Long-term debt	324,663	247,360
Derivative financial instruments	99,543	25,145
Accrued expenses and other liabilities	298,564	210,842
Total liabilities	21,308,210	18,724,526
Commitments and contingencies
Shareholders' equity:
Preferred stock, $1 par value: 10,000,000 shares authorized; Series I, $25,000 per share liquidation preference; 4,000 shares issued and outstanding	96,422	96,422
Common stock, $1 par value; 200,000,000 shares authorized, respectively; 106,222,758 and 89,349,826 shares issued and outstanding, respectively	106,223	89,350
Common stock issuable; 607,128 and 595,705 shares, respectively	12,307	11,288
Capital surplus	2,306,366	1,721,007
Retained earnings	508,844	330,654
Accumulated other comprehensive loss	(329,488)	(26,476)
Total shareholders’ equity	2,700,674	2,222,245
Total liabilities and shareholders’ equity	$ 24,008,884	$ 20,946,771
Common Stock, Shares Authorized	200,000,000	200,000,000