Revenue Recognition Transition Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net securities gains	$ 2,840	$ 652
Trust income	1,928	1,417
Service charges on deposit accounts	4,406	4,319
Insurance and retail brokerage commissions	1,868	2,082
Income from bank owned life insurance	1,494	1,292
Gain on sale of mortgage loans	1,484	977
Gain on sale of other loans and assets	574	307
Card-related interchange income	4,742	4,251
Derivatives mark to market	789	2
Derivative Fee Income	290	(73)
Other income	1,628	1,706
Noninterest Income	22,043	16,932
Salaries and employee benefits	24,873	23,466
Net occupancy expense	4,369	3,761
Furniture and equipment expense	3,540	3,088
Data processing expense	2,433	2,085
Marketing and Advertising Expense	809	806
Pennsylvania shares tax expense	903	816
Intangible amortization	784	572
Collection and repossession expense	823	497
Other professional fees and services	1,007	959
FDIC insurance	776	793
Loss on sale or write-down of assets	197	99
Litigation and operational losses	179	232
Conversion Related Expenses	337	611
Other operating expenses	5,843	4,980
Noninterest Expense	46,873	$ 42,765
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net securities gains	2,840
Trust income	1,928
Service charges on deposit accounts	4,406
Insurance and retail brokerage commissions	2,248
Income from bank owned life insurance	1,494
Gain on sale of mortgage loans	1,484
Gain on sale of other loans and assets	574
Card-related interchange income	4,742
Derivatives mark to market	789
Derivative Fee Income	290
Other income	1,854
Noninterest Income	22,649
Salaries and employee benefits	25,253
Net occupancy expense	4,369
Furniture and equipment expense	3,540
Data processing expense	2,509
Marketing and Advertising Expense	809
Pennsylvania shares tax expense	903
Intangible amortization	784
Collection and repossession expense	823
Other professional fees and services	1,007
FDIC insurance	776
Loss on sale or write-down of assets	197
Litigation and operational losses	179
Conversion Related Expenses	337
Other operating expenses	5,993
Noninterest Expense	47,479
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net securities gains	0
Trust income	0
Service charges on deposit accounts	0
Insurance and retail brokerage commissions	(380)
Income from bank owned life insurance	0
Gain on sale of mortgage loans	0
Gain on sale of other loans and assets	0
Card-related interchange income	0
Derivatives mark to market	0
Derivative Fee Income	0
Other income	(226)
Noninterest Income	(606)
Salaries and employee benefits	(380)
Net occupancy expense	0
Furniture and equipment expense	0
Data processing expense	(76)
Marketing and Advertising Expense	0
Pennsylvania shares tax expense	0
Intangible amortization	0
Collection and repossession expense	0
Other professional fees and services	0
FDIC insurance	0
Loss on sale or write-down of assets	0
Litigation and operational losses	0
Conversion Related Expenses	0
Other operating expenses	(150)
Noninterest Expense	(606)
Net Impact of Topic 606	$ 0