CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Interest income:
Loans	$ 446,245	$ 433,781	$ 873,036	$ 868,430
Money market investments	23,742	4,274	30,206	7,386
Investment securities	101,774	91,706	198,240	177,396
Total interest income	571,761	529,761	1,101,482	1,053,212
Interest expense:
Deposits	27,827	28,060	52,610	58,261
Short-term borrowings	248	62	328	205
Long-term debt	9,824	13,837	20,370	27,832
Total interest expense	37,899	41,959	73,308	86,298
Net interest income	533,862	487,802	1,028,174	966,914
Provision for credit losses (benefit)	9,362	(17,015)	(6,138)	(99,241)
Net interest income after provision for credit losses (benefit)	524,500	504,817	1,034,312	1,066,155
Non-interest income:
Mortgage banking activities	13,575	7,448	26,440	24,791
Net (loss) gain, including impairment, on equity securities	(4,109)	1,565	(6,203)	1,986
Net gain (loss) on trading account debt securities	51	(47)	(672)	(92)
Net loss on sale of loans, including valuation adjustments on loans held-for-sale	0	(73)	0	(73)
Adjustments (expense) to indemnity reserves on loans sold	170	1,668	(575)	970
Other operating income	24,464	27,444	52,006	53,828
Total non-interest income	157,411	154,540	312,103	308,193
Operating expenses:
Personnel costs	168,788	154,204	335,784	313,683
Net occupancy expenses	26,214	24,562	50,937	50,575
Equipment expenses	25,088	22,805	48,567	44,380
Other taxes	15,780	13,205	31,495	27,164
Professional fees	114,872	101,153	223,369	201,101
Communications	5,993	6,005	12,140	12,838
Business promotion	21,353	16,511	36,436	29,032
FDIC deposit insurance	6,463	5,742	13,835	11,710
Other real estate owned (OREO) income	(7,806)	(4,299)	(10,519)	(8,832)
Other operating expenses	28,738	27,042	64,887	59,756
Amortization of intangibles	795	1,255	1,686	2,306
Total operating expenses	406,278	368,185	808,617	743,713
Income before income tax	275,633	291,172	537,798	630,635
Income tax expense	64,212	73,093	114,691	149,924
Net Income	211,421	218,079	423,107	480,711
Net Income Applicable to Common Stock	$ 211,068	$ 217,726	$ 422,401	$ 480,005
Net Income per Common Share - Basic	$ 2.77	$ 2.67	$ 5.46	$ 5.80
Net Income per Common Share - Diluted	$ 2.77	$ 2.66	$ 5.46	$ 5.79
Service charges on deposit accounts
Non-interest income:
Revenue from contract with customer	$ 41,809	$ 40,153	$ 82,522	$ 79,773
Other services
Non-interest income:
Revenue from contract with customer	$ 81,451	$ 76,382	$ 158,585	$ 147,010