CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities
Net income	$ 65,232	$ 55,243
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	7,379	7,777
Depreciation and amortization	9,753	9,697
Stock-based compensation expense	3,902	3,006
Pension expense (income)	(675)	(900)
Net amortization of premiums/accretion of discounts on investment securities	6,213	5,874
Net gains on sales of investment securities	(234)	(1,503)
Originations of loans held for sale	(172,950)	(197,621)
Net gains from sales of loans held for sale	(5,093)	(5,146)
Proceeds from sales of loans held for sale	181,263	187,364
Deferred income taxes	271	2,954
Bank owned life insurance income	(1,342)	(1,314)
Decrease (increase) in interest receivable	(1,183)	(1,912)
Decrease (increase) in indemnification asset	(4,343)	(3,735)
(Decrease) increase in interest payable	(1,480)	706
Decrease (increase) in other assets	(21,301)	(22,770)
(Decrease) increase in other liabilities	2,634	16,136
Net cash provided by (used in) operating activities	76,732	61,326
Investing activities
Proceeds from sales of securities available-for-sale	206,909	68,615
Proceeds from calls, paydowns and maturities of securities available-for-sale	119,437	88,336
Purchases of securities available-for-sale	(225,117)	(375,244)
Proceeds from Sale of Held-to-maturity Securities	4,862	0
Proceeds from calls, paydowns and maturities of securities held-to-maturity	89,529	111,499
Payments to Acquire Held-to-maturity Securities	0	3,520
Net decrease (increase) in interest-bearing deposits with other banks	16,969	(1,561)
Net decrease (increase) in loans and leases	(406,005)	(213,936)
Proceeds from disposal of other real estate owned	6,908	12,238
Purchases of premises and equipment	(6,427)	(6,371)
Payments to Acquire Life Insurance Policies	(4,006)	(3,575)
Life insurance death benefits	5,006	0
Payments to Acquire Businesses, Net of Cash Acquired	0	(305,591)
Net cash provided by (used in) investing activities	(191,935)	(629,110)
Financing activities
Net (decrease) increase in total deposits	159,059	425,686
Net (decrease) increase in short-term borrowings	(12,189)	102,125
Payments on long-term debt	(86)	(46,238)
Proceeds from issuance of long-term debt	0	120,000
Cash dividends paid on common stock	(29,318)	(29,282)
Treasury stock purchase	0	(2,783)
Proceeds from exercise of stock options	653	367
Excess tax benefit on share-based compensation	225	85
Net cash provided by (used in) financing activities	118,344	569,960
Cash and due from banks:
Change in cash and due from banks	3,141	2,176
Cash and due from banks at beginning of period	114,841	110,122
Cash and due from banks at end of period	$ 117,982	$ 112,298