Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income		$ 24,567	$ 29,225
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		1,989	1,982
Amortization of right-of-use asset		3,050	2,941
Net gain on sale of other real estate owned		(158)	(465)
Writedown of other real estate owned		103	276
Provision (credit) for loan losses		4,000	(41)
Deferred tax (benefit) expense		(342)	660
Net amortization of securities		1,880	1,313
Stock based compensation expense		10	(6)
Net gain on sale of bank premises and equipment		0	(2)
Net gain on sales of securities	[1]	(1,155)	0
Decrease in taxes receivable		957	1,038
Increase in interest receivable		(733)	(996)
(Decrease) increase in interest payable		(432)	528
Increase in other assets		(1,127)	(1,647)
Decrease in operating lease liabilities		(3,130)	(2,983)
Decrease in accrued expenses and other liabilities		(1,137)	(1,469)
Total adjustments		3,775	1,129
Net cash provided by operating activities		28,342	30,354
Cash flows from investing activities:
Proceeds from sales and calls of securities available for sale		183,835	44,450
Proceeds from calls and maturities of held to maturity securities		1,904	1,754
Purchases of securities available for sale		(37,854)	(176,045)
Proceeds from maturities of securities available for sale		5,000	10,052
Purchases of Federal Reserve Bank and Federal Home Loan Bank stock		(380)	(230)
Proceeds from redemption of Federal Reserve Bank stock		4,057	0
Net increase in loans		(115,972)	(35,385)
Proceeds from dispositions of other real estate owned		1,238	1,951
Proceeds from dispositions of bank premises and equipment		0	2
Purchases of bank premises and equipment		(1,409)	(1,346)
Net cash provided by (used in) investing activities		40,419	(154,797)
Cash flows from financing activities:
Net increase in deposits		415,291	188,020
Net increase (decrease) in short-term borrowings		28,612	4,853
Proceeds from exercise of stock options		0	35
Proceeds from sale of treasury stock		0	1,194
Purchases of treasury stock		(3,493)	(35)
Dividends paid		(13,181)	(13,178)
Net cash provided by financing activities		427,229	180,889
Net increase in cash and cash equivalents		495,990	56,446
Cash and cash equivalents at beginning of period		456,846	503,709
Cash and cash equivalents at end of period		952,836	560,155
Cash paid during the year for:
Interest paid		15,378	16,626
Income taxes paid		6,887	8,332
Other non cash items:
Transfer of loans to other real estate owned		434	2,712
Increase in dividends payable		214	11
Change in unrealized gain on securities available for sale-gross of deferred taxes		10,504	11,767
Change in deferred tax effect on unrealized (gain) loss on securities available for sale		(2,729)	(3,058)
Amortization of net actuarial gain and prior service cost on pension and postretirement plans		(407)	(235)
Change in deferred tax effect of amortization of net actuarial gain postretirement benefit plans		$ 107	$ 61

[1] Not within the scope of ASC 606.