CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 116,728	$ 115,710
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	14,346	13,848
Stock-based compensation	7,263	5,465
Provision for credit losses	3,557	8,656
Net amortization of premiums and accretion of discounts on securities and borrowings	7,487	8,293
Amortization of other intangible assets	4,437	6,006
Losses (gains) on securities transactions, net	1,072	(101)
Proceeds from sales of loans held for sale	204,628	357,108
Gains on sales of loans, net	(986)	(3,513)
Originations of loans held for sale	(144,485)	(287,765)
Gains on sales of assets, net	64	196
Net change in:
Fair value of borrowings hedged by derivative transactions	(14,696)	0
Trading debt securities	26,391	0
Cash surrender value of bank owned life insurance	(2,046)	(2,331)
Accrued interest receivable	(5,785)	(1,560)
Other assets	12,999	204,948
Accrued expenses and other liabilities	265,029	(111,562)
Net cash provided by operating activities	496,003	313,398
Cash flows from investing activities:
Net loan originations and purchases	(1,210,754)	(475,142)
Equity securities:
Purchases	(662)	(1,878)
Sales	848	319
Held to maturity debt securities:
Purchases	(545,462)	(407,793)
Maturities, calls and principal repayments	136,024	184,163
Available for sale debt securities:
Purchases	(15,000)	0
Sales	0	41,134
Maturities, calls and principal repayments	73,008	164,235
Death benefit proceeds from bank owned life insurance	2,369	1,628
Proceeds from sales of real estate property and equipment	5,692	1,742
Purchases of real estate property and equipment	(22,749)	(8,042)
Cash paid in acquisition	(8,607)	0
Net cash used in investing activities	(1,585,293)	(499,634)
Cash flows from financing activities:
Net change in deposits	14,924	649,607
Net change in short-term borrowings	(171,545)	(63,292)
Repayments of long-term borrowings	0	(51,769)
Cash dividends paid to preferred shareholders	(3,172)	(3,172)
Cash dividends paid to common shareholders	(46,205)	(45,526)
Purchase of common shares to treasury	(23,627)	(542)
Common stock issued, net	95	5,723
Other, net	(180)	(165)
Net cash (used in) provided by financing activities	(229,710)	490,864
Net change in cash and cash equivalents	(1,319,000)	304,628
Cash and cash equivalents at beginning of year	2,049,920	1,329,205
Cash and cash equivalents at end of period	730,920	1,633,833
Supplemental disclosures of cash flow information:
Interest on deposits and borrowings	19,682	37,997
Federal and state income taxes	6,842	5,855
Supplemental schedule of non-cash investing activities:
Transfer of loans to other real estate owned	0	141
Lease right of use assets obtained in exchange for operating lease liabilities	6,836	21
Non-cash net assets acquired	$ 8,607	$ 0