CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 87,268	$ 113,330
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	14,734	12,798
Stock-based compensation	3,684	4,033
Provision for credit losses	34,683	8,000
Net amortization of premiums and accretion of discounts on securities and borrowings	6,685	7,560
Amortization of other intangible assets	5,470	4,311
Losses on securities transactions, net	40	32
Proceeds from sales of loans held for sale	168,392	96,189
Gains on sales of loans, net	4,550	4,576
Originations of loans held for sale	(147,981)	(89,564)
Gains on sales of assets, net	(121)	(77,720)
Net change in:
Cash surrender value of bank owned life insurance	(3,142)	(1,887)
Accrued interest receivable	(1,716)	(5,426)
Other assets	(401,849)	(38,990)
Accrued expenses and other liabilities	122,426	65,212
Net cash (used in) provided by operating activities	(115,977)	93,302
Cash flows from investing activities:
Net loan originations and purchases	(667,555)	(493,689)
Equity securities:
Purchases	(5,214)	0
Held to maturity debt securities:
Purchases	(103,192)	(77,670)
Maturities, calls and principal repayments	118,541	68,165
Available for sale debt securities:
Purchases	238,488	0
Maturities, calls and principal repayments	88,688	45,351
Death benefit proceeds from bank owned life insurance	1,184	644
Proceeds from sales of real estate property and equipment	6,352	101,916
Proceeds from sales of loans held for investment	30,020	99,976
Purchases of real estate property and equipment	(9,235)	(3,817)
Net cash used in investing activities	(778,899)	(259,124)
Cash flows from financing activities:
Net change in deposits	(168,849)	454,522
Net change in short-term borrowings	1,002,375	(56,338)
Proceeds from issuance of long-term borrowings, net	725,242	0
Repayments of long-term borrowings	(42,128)	(155,000)
Cash dividends paid to preferred shareholders	(3,172)	0
Cash dividends paid to common shareholders	(44,682)	(37,053)
Purchase of common shares to treasury	(2,094)	(1,367)
Common stock issued, net	(1,358)	(855)
Other, net	(130)	(119)
Net cash provided by financing activities	1,465,204	203,790
Net change in cash and cash equivalents	570,328	37,968
Cash and cash equivalents at beginning of year	434,687	428,629
Cash and cash equivalents at end of period	1,005,015	466,597
Cash payments for:
Interest on deposits and borrowings	104,797	93,405
Federal and state income taxes	4,215	3,204
Supplemental schedule of non-cash investing activities:
Transfer of loans to other real estate owned	2,750	730
Transfer of loans to loans held for sale	30,020	99,976
Lease right of use assets obtained in exchange for operating lease liabilities	$ 3,121	$ 289,669