Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 54,324	$ 45,278
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	3,091	3,184
Amortization of right-of-use asset	4,841	4,745
Net gain on sale of other real estate owned	(99)	(86)
Writedown of other real estate owned	0	121
(Credit) provision for credit losses	(391)	(2,450)
Deferred tax expense (benefit)	1,523	(1,247)
Net amortization of securities	1,802	3,113
Net gain on sale of bank premises and equipment	(314)	0
Decrease (increase) in taxes receivable	4,062	(463)
(Increase) decrease in interest receivable	(1,837)	673
Decrease in interest payable	(1)	(249)
Increase in other assets	(4,406)	(1,442)
Decrease in operating lease liabilities	(5,127)	(4,965)
Decrease in accrued expenses and other liabilities	(1,652)	(2,106)
Total adjustments	1,492	(1,172)
Net cash provided by operating activities	55,816	44,106
Cash flows from investing activities:
Proceeds from sales, paydowns and calls of securities available for sale	57,714	123,550
Proceeds from paydowns of held to maturity securities	1,772	3,028
Purchases of securities available for sale	(184,391)	(136,543)
Proceeds from maturities of securities available for sale	15,050	8,555
Purchases of Federal Home Loan Bank stock	(193)	(98)
Net increase in loans	(191,052)	(152,314)
Proceeds from dispositions of other real estate owned	416	255
Proceeds from dispositions of bank premises and equipment	469	6
Purchases of bank premises and equipment	(2,150)	(2,011)
Net cash used in investing activities	(302,365)	(155,572)
Cash flows from financing activities:
Net increase in deposits	13,725	203,825
Net change in short-term borrowings	(119,754)	16,015
Proceeds from exercise of stock options	0	160
Cash used to settle fractional shares in the Reverse Stock Split	0	(200)
Purchases of treasury stock	(5,479)	(2,386)
Dividends paid	(20,149)	(19,708)
Net cash (used in) provided by financing activities	(131,657)	197,706
Net increase in cash and cash equivalents	(378,206)	86,240
Cash and cash equivalents at beginning of period	1,219,470	1,107,099
Cash and cash equivalents at end of period	841,264	1,193,339
Cash paid during the year for:
Interest paid	3,570	6,345
Income taxes paid	13,687	15,430
Other non cash items:
Transfer of loans to other real estate owned	637	260
Decrease in dividends payable	(8)	(10)
Change in unrealized (loss) gain on securities available for sale-gross of deferred taxes	(49,379)	(5,939)
Change in deferred tax effect on unrealized loss (gain) on securities available for sale	12,777	1,534
Amortization of net actuarial gain and prior service cost (credit) on pension and postretirement plans	(1,019)	(307)
Change in deferred tax effect of amortization of net actuarial gain postretirement benefit plans	265	80
Impact to retained earnings from adoption of ASC 326, net of tax	$ (3,470)	$ 0