Loans (Credit Quality Indicators - Commercial) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Pass | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	$ 1,546,139
Pass | Commercial & Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	549,416
Pass | Total Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	2,095,555
Special Mention | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	830
Special Mention | Commercial & Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	24,961
Special Mention | Total Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	25,791
Classified | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	603
Classified | Commercial & Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	10,912
Classified | Total Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans by credit quality indicator	$ 11,515