Loans (Schedule of Recorded Investment in Home Equity, Consumer and Residential Mortgage Loans) (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	$ 2,042,770	$ 2,001,415
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	9,513	11,048
Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	141,851	134,032
Home Equity Loans | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		0	0
Home Equity Loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		141,779	133,959
Home Equity Loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		72	73
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	61,334	60,099
Consumer Loans | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	53	53
Consumer Loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		60,901	60,014
Consumer Loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		433	85
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	181,886	183,770
Residential Mortgage Loans | Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	[1]	928	945
Residential Mortgage Loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		181,214	182,421
Residential Mortgage Loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income		$ 672	$ 1,349

[1] Total recorded investment in loans includes $7,623 in accrued interest.