Loans and Leases (Details 1) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Acquired Loans and Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	$ 7,235	$ 7,388
Carrying amount	6,897	7,050
VIST Financial Corp. ("VIST Financial") [Member] | Acquired Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	30,851	32,752
Carrying amount	25,460	26,507
VIST Financial Corp. ("VIST Financial") [Member] | Acquired Non Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	429,177	439,389
Carrying amount	424,662	434,767
VIST Financial Corp. ("VIST Financial") [Member] | Acquired Loans and Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	460,028	472,141
Carrying amount	$ 450,122	$ 461,274