CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income
Interest and fees on loans	$ 275,189	$ 291,889	$ 257,316
Interest and dividends on investments:
Taxable interest	24,063	29,773	31,264
Interest exempt from federal income taxes	1,053	1,591	1,646
Dividends	686	1,608	1,859
Interest on bank deposits	218	403	172
Total interest income	301,209	325,264	292,257
Interest Expense
Interest on deposits	21,972	36,725	21,713
Interest on short-term borrowings	704	8,298	10,741
Interest on subordinated debentures	8,580	9,084	6,987
Interest on other long-term debt	1,419	1,016	300
Interest Expense, Lessee, Assets under Capital Lease	263	279	294
Total interest expense	32,938	55,402	40,035
Net Interest Income	268,271	269,862	252,222
Provision for credit losses	56,718	14,533	12,531
Net Interest Income after Provision for Credit Losses	211,553	255,329	239,691
Noninterest Income
Net securities gains	70	22	8,102
Trust income	9,101	8,321	7,901
Service charges on deposit accounts	16,387	18,926	18,175
Insurance and retail brokerage commissions	7,850	7,583	7,426
Income from bank owned life insurance	6,552	6,002	6,686
Gain on sale of mortgage loans	18,764	7,765	5,436
Gain on sale of other loans and assets	(4,827)	(4,793)	(5,273)
Card related interchange income	23,966	21,677	20,187
Derivative, Gain (Loss) on Derivative, Net	(2,521)	(269)	787
Swap Fee Income	1,588	3,397	1,874
Other income	7,892	7,268	6,790
Total noninterest income	94,476	85,485	88,637
Noninterest Expense
Salaries and employee benefits	118,961	112,237	105,115
Net occupancy	17,647	18,923	17,219
Furniture and equipment	15,393	15,160	14,247
Data processing	10,543	10,692	10,470
Advertising and promotion	4,679	4,250	3,956
Pennsylvania shares tax	4,500	4,602	4,875
Intangible amortization	3,689	3,344	3,217
Other professional fees and services	3,886	4,631	4,473
FDIC insurance	2,699	1,219	2,007
Asset Impairment Charges	680	1,724	1,080
Litigation and operational losses	1,411	1,687	1,162
Merger and acquisition related	0	3,536	1,637
COVID-19 related expenses	874	0	0
Voluntary retirement plan expenses	3,422	0	0
Branch consolidation expense	2,672	0	0
Other operating expenses	24,770	27,960	26,098
Total noninterest expense	215,826	209,965	195,556
Income before income taxes	90,203	130,849	132,772
Income tax provision	16,756	25,516	25,274
Net Income	$ 73,447	$ 105,333	$ 107,498
Average Shares Outstanding (in shares)	97,499,586	98,317,787	99,036,163
Average Shares Outstanding Assuming Dilution (in shares)	97,758,965	98,588,164	99,223,513
Per Share Data:
Basic Earnings Per Share (in dollars per share)	$ 0.75	$ 1.07	$ 1.09
Diluted Earnings Per Share (in dollars per share)	0.75	1.07	1.08
Cash Dividends Declared per Common Share (in dollars per share)	$ 0.44	$ 0.40	$ 0.35
Securities held to maturity, fair value	$ 369,851	$ 338,718