Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 76,451	$ 88,658
Interest-bearing deposits in depository institutions	176,267	51,486
Cash and Cash Equivalents	252,718	140,144
Investment securities available for sale, at fair value	1,157,399	810,106
Investment securities, held-to-maturity, at amortized cost	0	49,036
Securities held-to-maturity, Estimated Fair Value	0	50,598
Other securities	26,548	28,490
Total Investment Securities	1,183,947	887,632
Gross loans	3,663,966	3,616,099
Allowance for credit losses	(24,867)	(11,589)
Net Loans	3,639,099	3,604,510
Bank owned life insurance	117,501	115,261
Premises and equipment, net	77,031	76,965
Accrued interest receivable	16,627	11,569
Net deferred tax asset	0	6,669
Goodwill and other intangible assets, net	119,004	120,241
Other assets	105,361	55,765
Total Assets	5,511,288	5,018,756
Deposits:
Noninterest-bearing	1,061,310	805,087
Interest-bearing:
Demand deposits	940,791	896,465
Savings deposits	1,117,684	1,009,771
Time deposits	1,300,291	1,364,571
Total Deposits	4,420,076	4,075,894
Securities sold under agreements to repurchase	279,866	211,255
Long-term debt	0	4,056
Net deferred tax liability	1,601	0
Other liabilities	118,386	69,568
Total Liabilities	$ 4,819,929	$ 4,360,773
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	0	0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	19,047,548	19,047,548
Common stock, treasury shares (in shares)	3,199,421	2,744,109
Preferred Stock	$ 0	$ 0
Common Stock	47,619	47,619
Capital surplus	170,526	170,309
Retained earnings	576,901	539,253
Cost of common stock in treasury	(134,177)	(105,038)
Accumulated other comprehensive income:
Unrealized gain on securities available-for-sale	36,760	12,110
Underfunded pension liability	(6,270)	(6,270)
Total Accumulated Other Comprehensive Income	30,490	5,840
Total Shareholders’ Equity	691,359	657,983
Total Liabilities and Shareholders’ Equity	$ 5,511,288	$ 5,018,756