Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES
Net income	$ 40,953	$ 33,152
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	10,052	9,863
Provision for unfunded loan commitments	(334)	131
Depreciation, amortization and accretion	850	1,878
Net amortization of discounts and premiums on securities	2,030	1,861
Stock-based compensation expense	1,843	1,279
Securities gains	(3,987)	0
Mortgage loans originated for sale	(38,899)	(45,831)
Proceeds from the sale of mortgage loans	38,041	46,555
Gain on the sale of mortgage loans, net	(719)	(679)
Gain on the sale of credit card portfolio	0	(2,066)
Pension plan curtailment gain	0	(1,017)
Net increase in interest receivable	(666)	(3,485)
Net increase in interest payable	246	1,126
Net decrease (increase) in other assets	4,484	(2,900)
Net (decrease) increase in other liabilities	(1,775)	4,127
Net Cash Provided by Operating Activities	52,119	43,994
INVESTING ACTIVITIES
Purchases of securities available-for-sale	(36,604)	(45,431)
Proceeds from maturities, prepayments and calls of securities available-for-sale	35,256	34,723
Proceeds from sales of securities available-for-sale	7,751	0
Net proceeds from (purchases of) Federal Home Loan Bank stock	1,600	(4,723)
Net increase in loans	(176,768)	(369,089)
Proceeds from sale of loans not originated for resale	3,581	2,427
Purchases of premises and equipment	(3,018)	(1,360)
Proceeds from the sale of premises and equipment	273	3
Proceeds from the sale of credit card portfolio	0	25,019
Net Cash Used in Investing Activities	(167,929)	(358,431)
FINANCING ACTIVITIES
Net increase in deposits	44,914	105,970
Net increase in certificates of deposit	92,427	138,148
Net decrease in securities sold under repurchase agreements	(4,343)	(13,607)
Net (decrease) increase in short-term borrowings	(15,000)	194,000
Repayments of long-term borrowings	(1,195)	(101,155)
Treasury shares issued-net	(689)	(116)
Cash dividends paid to common shareholders	(13,927)	(13,211)
Net Cash Provided by Financing Activities	102,187	310,029
Net decrease in cash and cash equivalents	(13,623)	(4,408)
Cash and cash equivalents at beginning of period	139,486	99,399
Cash and Cash Equivalents at End of Period	125,863	94,991
Supplemental Disclosures
Loans transferred from portfolio to held for sale	17,750
Loans transferred to portfolio from held for sale		(1,540)
Interest paid	15,369	10,398
Income taxes paid, net of refunds	13,399	13,474
Transfers of loans to other real estate owned	$ 1,407	$ 231