Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES
Net income	$ 53,733	$ 49,658
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	12,379	6,473
Provision for unfunded loan commitments	90	687
Depreciation, amortization and accretion	2,858	(6)
Net amortization of discounts and premiums on securities	2,816	2,682
Stock-based compensation expense	1,862	1,158
Securities losses, net	0	34
Tax benefit from stock-based compensation	0	(53)
Mortgage loans originated for sale	(75,505)	(81,966)
Proceeds from the sale of mortgage loans	77,009	71,872
Gain on the sale of mortgage loans, net	(1,154)	(730)
Gain on the sale of credit card portfolio	(2,066)	0
Pension plan curtailment gain	(1,017)	0
Net increase in interest receivable	(4,019)	(2,280)
Net increase (decrease) in interest payable	1,117	(637)
Net decrease in other assets	702	13,216
Net increase in other liabilities	3,586	1,531
Net Cash Provided by Operating Activities	72,391	61,639
INVESTING ACTIVITIES
Purchases of securities available-for-sale	(53,282)	(54,465)
Proceeds from maturities, prepayments and calls of securities available-for-sale	52,049	36,680
Proceeds from sales of securities available-for-sale	0	11,119
Net purchases of Federal Home Loan Bank stock	(5,298)	(3,535)
Net increase in loans	(406,370)	(276,282)
Proceeds from sale of loans not originated for resale	8,433	2,804
Purchases of premises and equipment	(2,744)	(3,737)
Proceeds from the sale of premises and equipment	20	264
Proceeds from the sale of credit card portfolio	25,019	0
Net cash paid in excess of cash acquired from bank merger	0	(16,347)
Net Cash Used in Investing Activities	(382,173)	(303,499)
FINANCING ACTIVITIES
Net increase in deposits	169,751	259,725
Net increase (decrease) in certificates of deposit	99,612	(12,399)
Net (decrease) increase in securities sold under repurchase agreements	(21,138)	12,366
Net increase (decrease) in short-term borrowings	209,000	(78,660)
Proceeds from long-term borrowings	0	100,000
Repayments of long-term borrowings	(101,740)	(1,829)
Repayment of junior subordinated debt	0	(13,500)
Treasury shares issued-net	(115)	(111)
Common stock issuance costs	0	(132)
Cash dividends paid to common shareholders	(19,824)	(17,886)
Tax benefit from stock-based compensation	0	53
Net Cash Provided by Financing Activities	335,546	247,627
Net increase in cash and cash equivalents	25,764	5,767
Cash and cash equivalents at beginning of period	99,399	109,580
Cash and Cash Equivalents at End of Period	125,163	115,347
Supplemental Disclosures
Loans transferred from held for sale to portfolio	1,540	0
Interest paid	16,761	11,853
Income taxes paid, net of refunds	17,974	15,675
Net assets acquired from bank merger, excluding cash and cash equivalents	0	43,433
Transfers of loans to other real estate owned	$ 581	$ 628