CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income	$ 28,628	$ 45,839
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	25,448	14,083
Depreciation and amortization	8,464	6,489
Stock-based compensation expense	1,537	2,996
Pension expense (income)	400	375
Net amortization (accretion) on investment securities	3,981	2,649
Net (gain) loss on sales of investment securities	59	178
Originations of loans held for sale	(111,112)	(41,227)
Net gains from sales of loans held for sale	(2,831)	(1,890)
Proceeds from sales of loans held for sale	100,288	39,273
Deferred income taxes	2,975	12,625
Amortization of operating leases	2,020	1,826
Payments for operating leases	(1,288)	(1,823)
Decrease (increase) cash surrender value of life insurance	198	1,534
Decrease (increase) in interest receivable	(878)	(3,109)
(Decrease) increase in interest payable	(2,197)	322
Decrease (increase) in other assets	(362,619)	(30,168)
(Decrease) increase in other liabilities	181,099	(8,908)
Net cash provided by (used in) operating activities	(126,224)	37,996
Investing activities
Proceeds from sales of securities available-for-sale	29,922	0
Proceeds from calls, paydowns and maturities of securities available-for-sale	151,629	95,114
Purchases of securities available-for-sale	(234,589)	(143,290)
Proceeds from calls, paydowns and maturities of securities held-to-maturity	6,186	2,398
Payments to Acquire Other Investments	18,659	0
Net decrease (increase) in interest-bearing deposits with other banks	(14,123)	(12,486)
Net decrease (increase) in loans and leases	(105,697)	438
Proceeds from disposal of other real estate owned	900	183
Purchases of premises and equipment	(5,805)	(1,268)
Net cash provided by (used in) investing activities	(190,236)	(58,911)
Financing activities
Net (decrease) increase in total deposits	425,329	(6,379)
Net (decrease) increase in short-term borrowings	81,543	6,724
Payments of long-term debt	90,066	25,187
Cash dividends paid on common stock	(22,531)	(21,550)
Treasury stock purchase	16,686	0
Proceeds from exercise of stock options	72	90
Net cash provided by (used in) financing activities	377,661	(46,302)
Cash and due from banks:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	61,201	(67,217)
Cash and due from banks at beginning of period	200,691	236,221
Cash and due from banks at end of period	$ 261,892	$ 169,004