Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating Activities:
Net income	$ 39,271	$ 35,516
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization/accretion	9,852	12,594
Provision for loan losses	0	0
Net amortization of deferred loan fees	(215)	(112)
Increase in interest income receivable	(673)	(1,375)
(Increase) decrease in income taxes receivable	(6,549)	2,556
Decrease (increase) in net deferred tax asset	4,902	(204)
Increase in other assets	(20,013)	(346)
Stock option compensation expense	1,082	1,050
Increase in interest expense payable	44	50
(Decrease) increase in other liabilities	12,323	137
Equity securities (gains) losses	(50)	50
Life insurance gains	(433)	0
Net writedown of premises and equipment	0	3
Net gain on sale of foreclosed assets	0	(46)
Writedown of foreclosed assets	0	27
Net Cash Provided by Operating Activities	39,541	49,900
Investing Activities:
Net repayments of loans	44,721	89,041
Proceeds from life insurance policies	1,273	0
Purchases of debt securities available for sale	(418,223)	(439,212)
Proceeds from sale/maturity/calls of debt securities available for sale	368,216	220,037
Proceeds from maturity/calls of debt securities held to maturity	111,099	78,551
Purchases of premises and equipment	(1,425)	(2,309)
Proceeds from sale of foreclosed assets	307	506
Net Cash Provided by (Used in) Investing Activities	105,968	(53,386)
Financing Activities:
Net change in deposits	(136,577)	59,509
Net change in short-term borrowings	3,334	10,423
Exercise of stock options	8,310	9,483
Retirement of common stock	(488)	(524)
Common stock dividends paid	(21,786)	(21,261)
Net Cash (Used in) Provided by Financing Activities	(147,207)	57,630
Net Change In Cash and Due from Banks	(1,698)	54,144
Cash and Due from Banks at Beginning of Period	420,284	575,002
Cash and Due from Banks at End of Period	418,586	629,146
Supplemental disclosure of non cash activities:
Right-of-use assets acquired in exchange for operating lease liabilities	23,087	0
Amount recognized upon initial adoption of ASU 2016-02 included above	15,325	0
Loan collateral transferred to other real estate owned	0	0
Securities purchases pending settlement	0	3,159
Supplemental disclosure of cash flow activities:
Cash paid for amounts included in operating lease liabilities	3,411	0
Interest paid for the period	874	885
Income tax payments for the period	$ 12,910	$ 6,776