Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES
Net income	$ 63,674	$ 53,733
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	12,901	12,379
Net (decrease) increase in Provision for unfunded loan commitments	(546)	90
Depreciation, amortization and accretion	1,597	2,858
Net amortization of discounts and premiums on securities	3,065	2,816
Stock-based compensation expense	2,353	1,862
Securities gains	(3,987)	0
Mortgage loans originated for sale	(66,535)	(75,505)
Proceeds from the sale of mortgage loans	66,604	77,009
Gain on the sale of mortgage loans, net	(1,061)	(1,154)
Gain on the sale of credit card portfolio	0	(2,066)
Pension plan curtailment gain	0	(1,017)
Net increase in interest receivable	(3,886)	(4,019)
Net increase in interest payable	448	1,117
Net decrease in other assets	8,735	702
Net increase in other liabilities	69	3,586
Net Cash Provided by Operating Activities	83,431	72,391
INVESTING ACTIVITIES
Purchases of securities available-for-sale	(69,699)	(53,282)
Proceeds from maturities, prepayments and calls of securities available-for-sale	58,601	52,049
Proceeds from sales of securities available-for-sale	7,751	0
Net proceeds from (purchases of) Federal Home Loan Bank stock	1,304	(5,298)
Net increase in loans	(268,132)	(406,370)
Proceeds from sale of loans not originated for resale	3,581	8,433
Purchases of premises and equipment	(3,646)	(2,744)
Proceeds from the sale of premises and equipment	376	20
Proceeds from the sale of credit card portfolio	0	25,019
Net Cash Used in Investing Activities	(269,864)	(382,173)
FINANCING ACTIVITIES
Net increase in deposits	109,637	169,751
Net increase in certificates of deposit	61,048	99,612
Net decrease in securities sold under repurchase agreements	(10,909)	(21,138)
Net increase in short-term borrowings	25,000	209,000
Repayments of long-term borrowings	(1,802)	(101,740)
Treasury shares issued-net	(688)	(115)
Cash dividends paid to common shareholders	(20,899)	(19,824)
Net Cash Provided by Financing Activities	161,387	335,546
Net (decrease) increase in cash and cash equivalents	(25,046)	25,764
Cash and cash equivalents at beginning of period	139,486	99,399
Cash and Cash Equivalents at End of Period	114,440	125,163
Supplemental Disclosures
Loans transferred to held for sale, net	43,151	1,540
Deposits transferred to held for sale	38,960	0
Interest paid	24,682	16,761
Income taxes paid, net of refunds	21,096	17,974
Transfers of loans to other real estate owned	$ 2,116	$ 581