Summary of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Impaired [Line Items]
TDRs on nonaccrual status	$ 24,766	$ 29,348
Financing Receivable, Nonaccrual	45,892	45,413	[1]
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	22,574	26,310
Commercial Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	3,016	3,015
Construction Loans [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	0	311
Small Business [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	311	235
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	13,360	8,251
Home Equity [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	6,570	7,278
Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, Nonaccrual	$ 61	$ 13

[1]
(1) Included in these amounts were $24.8 million and $29.3 million of nonaccruing TDRs at December 31, 2019 and 2018, respectively.