Loans (Schedule of Recorded Investment in Home Equity, Consumer and Residential Mortgage Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 2,744,042	[1]	$ 2,154,502	[2]
Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	209,009	[1]	152,757	[2]
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	77,761	[1]	67,647	[2]
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	329,354	[1]	179,199	[2]
Performing | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	208,921		152,558
Performing | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	77,599		67,361
Performing | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	327,737		178,712
Nonperforming | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	88		199
Nonperforming | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	162		286
Nonperforming | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	1,617		487
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	11,556		9,117		$ 11,048
Loans Acquired with Deteriorated Credit Quality | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	365		0		0
Loans Acquired with Deteriorated Credit Quality | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0		53
Loans Acquired with Deteriorated Credit Quality | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 1,283		$ 888		$ 945

[1] Total recorded investment in loans includes $12,301 in accrued interest.

[2] Total recorded investment in loans includes $9,483 in accrued interest.