CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Interest income:
Loans	$ 714,266,000	$ 684,587,000	$ 1,416,415,000	$ 1,351,260,000
Money market investments	47,021,000	69,532,000	91,261,000	139,698,000
Investment securities	220,352,000	189,753,000	421,179,000	369,912,000
Total interest income	981,639,000	943,872,000	1,928,855,000	1,860,870,000
Interest expense:
Deposits	271,254,000	295,058,000	530,672,000	592,921,000
Short-term borrowings	5,172,000	5,300,000	10,875,000	6,726,000
Long-term debt	11,794,000	11,965,000	23,709,000	24,077,000
Total interest expense	288,220,000	312,323,000	565,256,000	623,724,000
Net interest income	693,419,000	631,549,000	1,363,599,000	1,237,146,000
Provision for credit losses	65,873,000	48,941,000	141,759,000	113,022,000
Net interest income after provision for credit losses	627,546,000	582,608,000	1,221,840,000	1,124,124,000
Non-interest income:
Mortgage banking activities	6,267,000	4,872,000	10,480,000	8,561,000
Net loss, including impairment on debt securities	(595,000)	0	(595,000)	0
Net gain, including impairment on equity securities	2,327,000	1,862,000	3,356,000	1,448,000
Net gain on trading account debt securities	214,000	538,000	475,000	1,058,000
Adjustments to indemnity reserves on loans sold	394,000	120,000	429,000	293,000
Other operating income	24,109,000	21,737,000	42,510,000	36,268,000
Total non-interest income	180,545,000	168,477,000	346,171,000	320,538,000
Operating expenses:
Personnel costs	229,031,000	229,355,000	445,100,000	442,068,000
Net occupancy expenses	27,764,000	29,140,000	55,063,000	56,358,000
Equipment expenses	5,879,000	5,789,000	11,108,000	11,091,000
Other taxes	17,707,000	18,632,000	35,384,000	37,357,000
Professional fees	24,484,000	28,108,000	50,037,000	54,933,000
Technology and software expenses	90,971,000	84,696,000	180,110,000	168,364,000
Processing and transactional services	37,266,000	37,861,000	76,353,000	75,642,000
Communications	4,261,000	5,010,000	8,770,000	9,914,000
Business promotion	27,900,000	26,385,000	50,760,000	50,060,000
Deposit insurance	9,977,000	9,407,000	19,894,000	19,442,000
Other real estate owned (OREO) income	(3,238,000)	(4,124,000)	(7,856,000)	(7,454,000)
Other operating expenses	11,744,000	22,117,000	25,949,000	45,016,000
Amortization of intangibles	384,000	385,000	768,000	982,000
Total operating expenses	484,130,000	492,761,000	951,440,000	963,773,000
Income before income tax	323,961,000	258,324,000	616,571,000	480,889,000
Income tax expense	45,747,000	47,884,000	92,683,000	92,947,000
Net Income	278,214,000	210,440,000	523,888,000	387,942,000
Net Income Applicable to Common Stock	$ 277,861,000	$ 210,087,000	$ 523,182,000	$ 387,236,000
Net Income per Common Share - Basic (in dollars per share)	$ 4.35	$ 3.09	$ 8.13	$ 5.64
Net Income per Common Share - Diluted (in dollars per share)	$ 4.35	$ 3.09	$ 8.13	$ 5.64
Service charges on deposit accounts
Non-interest income:
Service charges on deposit accounts	$ 39,037,000	$ 38,826,000	$ 77,803,000	$ 77,880,000
Other service fees
Non-interest income:
Service charges on deposit accounts	$ 108,792,000	$ 100,522,000	$ 211,713,000	$ 195,030,000