CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income:
Loans	$ 433,781	$ 429,670	$ 868,430	$ 880,116
Money market investments	4,274	2,015	7,386	14,015
Investment securities	91,706	76,884	177,396	164,796
Total interest income	529,761	508,569	1,053,212	1,058,927
Interest expense:
Deposits	28,060	42,780	58,261	104,881
Short-term borrowings	62	645	205	1,693
Long-term debt	13,837	14,263	27,832	28,377
Total interest expense	41,959	57,688	86,298	134,951
Net interest income	487,802	450,881	966,914	923,976
Provision for credit losses (benefit)	(17,015)	62,449	(99,241)	252,180
Net interest income after provision for credit losses (benefit)	504,817	388,432	1,066,155	671,796
Mortgage banking activities	7,448	3,777	24,791	10,197
Net gain (loss), including impairment, on equity securities	1,565	2,447	1,986	(281)
Net (loss) profit on trading account debt securities	(47)	82	(92)	573
Net (loss) gain on sale of loans, including valuation adjustments on loans held-for-sale	(73)	2,222	(73)	3,179
Adjustments (expense) to indemnity reserves on loans sold	1,668	(1,160)	970	(5,953)
Other operating income	27,444	22,440	53,828	42,304
Total non-interest income	154,540	112,055	308,193	238,698
Operating expenses:
Personnel costs	154,204	139,166	313,683	285,997
Net occupancy expenses	24,562	25,487	50,575	50,645
Equipment expenses	22,805	20,844	44,380	42,449
Other taxes	13,205	13,323	27,164	27,004
Professional fees	101,153	92,547	201,101	193,618
Communications	6,005	5,574	12,838	11,528
Business promotion	16,511	12,281	29,032	26,478
FDIC deposit insurance	5,742	5,340	11,710	10,420
Other real estate owned (OREO) (income) expenses	(4,299)	(344)	(8,832)	2,135
Other operating expenses	27,042	32,217	59,756	66,296
Amortization of intangibles	1,255	1,796	2,306	4,269
Total operating expenses	368,185	348,231	743,713	720,839
Income before income tax	291,172	152,256	630,635	189,655
Income tax expense	73,093	24,628	149,924	27,725
Net Income	218,079	127,628	480,711	161,930
Net Income Applicable to Common Stock	$ 217,726	$ 127,275	$ 480,005	$ 160,877
Net Income per Common Share - Basic	$ 2.67	$ 1.49	$ 5.80	$ 1.83
Net Income per Common Share - Diluted	$ 2.66	$ 1.49	$ 5.79	$ 1.83
Service charges on deposit accounts
Interest expense:
Revenue from contract with customer	$ 40,153	$ 30,163	$ 79,773	$ 71,822
Other services
Interest expense:
Revenue from contract with customer	$ 76,382	$ 52,084	$ 147,010	$ 116,857