Consolidated Statements of Cash Flows (Unaudited) - USD ($)		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Operating Activities:
Net income		$ 44,400,000	$ 44,175,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		14,211,000	12,379,000
Reversal of provision for loan losses		(3,200,000)
Net amortization of deferred loan fees		(281,000)	(263,000)
Decrease in interest income receivable		475,000	757,000
(Increase) decrease in other assets		(753,000)	107,000
Increase (decrease) in income taxes payable		403,000	(257,000)
Decrease in net deferred tax asset		3,258,000	968,000
Decrease in interest expense payable		(19,000)	(56,000)
Decrease in other liabilities		143,000	(2,571,000)
Stock option compensation expense		1,142,000	987,000
Tax benefit (increase) decrease upon exercise and expiration of stock options		(199,000)	1,215,000
Net writedown/loss on sale of premises and equipment		21,000	24,000
Net gain on sale of foreclosed assets		(1,182,000)	(73,000)
Writedown of foreclosed assets		759,000	315,000
Net Cash Provided by Operating Activities		59,178,000	57,707,000
Investing Activities:
Net repayments of loans		171,573,000	124,615,000
Change in payable to FDIC	[1]	3,180,000
Purchases of investment securities available for sale		(812,697,000)	(828,169,000)
Proceeds from sale/maturity/calls of securities available for sale		632,795,000	858,850,000
Purchases of investment securities held to maturity		(246,956,000)	(366,247,000)
Proceeds from maturity/calls of securities held to maturity		141,770,000	117,877,000
Purchases of premises and equipment		(1,299,000)	(4,049,000)
Net change in FRB(2)/FHLB(3) securities	[2],[3]		940,000
Proceeds from sale of foreclosed assets		7,143,000	1,774,000
Net Cash Used in Investing Activities		(104,491,000)	(94,409,000)
Financing Activities:
Net increase in deposits		104,211,000	17,737,000
Net increase (decrease) in short-term borrowings and FHLB(3) advances		3,330,000	(52,721,000)
Exercise of stock options/issuance of shares		11,588,000	4,848,000
Tax benefit increase (decrease) upon exercise and expiration of stock options		199,000	(1,215,000)
Retirement of common stock		(5,780,000)	(15,028,000)
Common stock dividends paid		(29,912,000)	(29,168,000)
Net Cash Provided by (Used in) Financing Activities		83,636,000	(75,547,000)
Net Change In Cash and Due from Banks		38,323,000	(112,249,000)
Cash and Due from Banks at Beginning of Period		433,044,000	380,836,000
Cash and Due from Banks at End of Period		471,367,000	268,587,000
Supplemental disclosure of non cash activities:
Loan collateral transferred to other real estate owned		488,000	4,911,000
Securities purchases pending settlement		171,000
Supplemental disclosure of cash flow activities:
Interest paid for the period		1,635,000	1,941,000
Income tax payments for the period		$ 14,032,000	$ 12,596,000

[1] Federal Deposit Insurance Corporation ("FDIC").

[2] Federal Home Loan Bank ("FHLB")

[3] Federal Reserve Bank ("FRB")