Loans (Loan Balances By Classification) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 2,169,208	$ 2,072,440
Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,169,208	2,072,440
Originated Loan | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,618,187	1,414,639
Originated Loan | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	70,838	63,785
Originated Loan | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	578,680	534,969
Originated Loan | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	351,340	288,130
Originated Loan | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	306,374	288,783
Originated Loan | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	83,412	74,176
Originated Loan | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	229,334	165,320
Originated Loan | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	67,973	61,813
Originated Loan | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	297,307	227,133
Originated Loan | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,074	1,448
Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	551,021	657,801
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	10,242	12,114
Acquired Loans | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	231,278	277,206
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	48,702	63,589
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	238,787	276,772
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	27,784	32,253
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	952	1,776
Acquired Loans | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	3,518	6,205
Acquired Loans | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 4,470	$ 7,981