Loans (Schedule of Recorded Investment in Home Equity, Consumer and Residential Mortgage Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2019		Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 3,074,146	[1]	$ 2,744,042	[2]
Home Equity Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	223,658	[1]	209,009	[2]
Home Equity Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	223,580		208,921
Home Equity Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total	78		88
Consumer Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	82,633	[1]	77,761	[2]
Consumer Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	82,553		77,599
Consumer Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total	80		162
Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	313,427	[1]	329,354	[2]
Residential Mortgage Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Total	312,225		327,737
Residential Mortgage Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 1,202		$ 1,617

[1] Total recorded investment in loans includes $13,404 in accrued interest.

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