CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest income
Interest and fees on loans	$ 1,300,653	$ 983,794	$ 820,476
Investment securities	108,294	63,179	42,820
Interest bearing cash and cash equivalents	220,976	97,271	13,233
Total interest income	1,629,923	1,144,244	876,529
Interest expense
Deposits	587,775	190,663	65,507
Short-term borrowings	70,642	29,077	4,613
Long-term debt	57,383	48,739	37,628
Total interest expense	715,800	268,479	107,748
Net interest income	914,123	875,765	768,781
Provision/(benefit) for credit losses	72,000	66,000	(30,000)
Net interest income after provision for credit losses	842,123	809,765	798,781
Non-interest income
Service charges on deposit accounts	20,874	23,266	19,054
Wealth management and trust fee income	13,955	15,036	13,173
Brokered loan fees	8,918	14,159	27,954
Investment banking and trading income	86,182	35,054	24,441
Gain on disposal of subsidiary	0	248,526	0
Other	31,490	13,481	53,664
Total non-interest income	161,419	349,522	138,286
Non-interest expense
Salaries and benefits	459,700	434,906	350,197
Occupancy expense	38,494	44,222	33,232
Marketing	25,854	32,388	10,006
Legal and professional	64,924	75,858	41,152
Communications and technology	81,262	69,253	75,185
Federal Deposit Insurance Corporation insurance assessment	36,775	14,344	21,027
Servicing-related expenses	0	0	27,765
Other	49,938	56,561	40,448
Total non-interest expense	756,947	727,532	599,012
Income before income taxes	246,595	431,755	338,055
Income tax expense	57,454	99,277	84,116
Net income	189,141	332,478	253,939
Preferred stock dividends	(17,250)	(17,250)	(18,721)
Net income available to common stockholders	171,891	315,228	235,218
Other comprehensive income/(loss)
Change in unrealized gain/(loss)	3,834	(479,814)	(80,366)
Amounts reclassified into net income	68,241	9,905	0
Other comprehensive income/(loss)	72,075	(469,909)	(80,366)
Income tax expense/(benefit)	15,136	(98,681)	(16,877)
Other comprehensive income/(loss), net of tax	56,939	(371,228)	(63,489)
Comprehensive income/(loss)	$ 246,080	$ (38,750)	$ 190,450
Basic earnings per common share
Basic earnings per common share	$ 3.58	$ 6.25	$ 4.65
Diluted earnings per common share
Diluted earnings per common share	$ 3.54	$ 6.18	$ 4.60