CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income:
Loans	$ 435,296	$ 431,286	$ 1,303,726	$ 1,311,402
Money market investments	6,914	2,773	14,300	16,788
Investment securities	87,952	79,142	265,348	243,938
Total interest income	530,162	513,201	1,583,374	1,572,128
Interest expense:
Deposits	27,029	37,554	85,290	142,435
Short-term borrowings	54	416	259	2,109
Long-term debt	13,686	14,210	41,518	42,587
Total interest expense	40,769	52,180	127,067	187,131
Net interest income	489,393	461,021	1,456,307	1,384,997
Provision for credit losses (benefit)	(61,173)	19,138	(160,414)	271,318
Net interest income after provision for credit losses (benefit)	550,566	441,883	1,616,721	1,113,679
Non-interest income:
Mortgage banking activities	8,307	(9,526)	33,098	671
Net gain on sale of debt securities	23	41	23	41
Net (loss) gain, including impairment, on equity securities	(401)	5,150	1,585	4,869
Net profit (loss) on trading account debt securities	58	20	(34)	593
Net (loss) gain on sale of loans, including valuation adjustments on loans held-for-sale	0	(2,198)	(73)	981
Adjustments (expense) to indemnity reserves on loans sold	2,038	4,183	3,008	(1,770)
Other operating income	37,476	24,369	91,304	66,673
Total non-interest income	169,258	128,767	477,451	367,465
Operating expenses:
Personnel costs	157,647	135,941	471,330	421,938
Net occupancy expenses	24,896	25,907	75,471	76,552
Equipment expenses	22,537	24,088	66,917	66,537
Other taxes	14,459	13,918	41,623	40,922
Professional fees	104,709	96,474	305,810	290,092
Communications	6,133	5,694	18,971	17,222
Business promotion	18,116	14,664	47,148	41,142
FDIC deposit insurance	7,181	6,568	18,891	16,988
Other real estate owned (OREO) (income) expenses	(1,722)	(1,615)	(10,554)	520
Other operating expenses	33,429	38,351	93,185	104,647
Amortization of intangibles	783	1,076	3,089	5,345
Total operating expenses	388,168	361,066	1,131,881	1,081,905
Income before income tax	331,656	209,584	962,291	399,239
Income tax expense	83,542	41,168	233,466	68,893
Net Income	248,114	168,416	728,825	330,346
Net Income Applicable to Common Stock	$ 247,761	$ 168,064	$ 727,766	$ 328,941
Net Income per Common Share - Basic	$ 3.09	$ 2.01	$ 8.89	$ 3.80
Net Income per Common Share - Diluted	$ 3.09	$ 2.00	$ 8.87	$ 3.80
Service charges on deposit accounts
Non-interest income:
Revenue from contract with customer	$ 41,312	$ 36,849	$ 121,085	$ 108,671
Other services
Non-interest income:
Revenue from contract with customer	$ 80,445	$ 69,879	$ 227,455	$ 186,736