Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net interest income	[1]	$ 31,654	$ 32,978	$ 95,201	$ 101,420
Asset-based wealth management revenues	[1]	8,786	9,013	25,297	27,075
Transaction-based wealth management revenues	[1]	168	140	951	879
Wealth management revenues	[1]	8,954	9,153	26,248	27,954
Mortgage banking revenues	[1]	12,353	4,840	33,300	11,126
Card interchange fees	[1]	1,161	1,099	3,139	3,114
Service charges on deposit accounts	[1]	598	939	1,975	2,743
Loan related derivative income	[1]	1,264	1,407	3,818	2,877
Income from bank-owned life insurance	[1]	567	569	1,922	1,784
Net realized losses on securities	[1]	0	0	0	(80)
Other income	[1]	571	335	1,313	944
Total noninterest income	[1]	25,468	18,342	71,715	50,462
Total revenues	[1]	57,122	51,320	166,916	151,882
Revenue from contracts in scope of Topic 606		11,204	11,514	32,388	34,728
Net Interest Income
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	0	0	0	0
Asset-based Wealth Management Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	8,786	9,013	25,297	27,075
Transaction-based Wealth Management Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	168	140	951	879
Total Wealth Management Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	8,954	9,153	26,248	27,954
Mortgage Banking Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	0	0	0	0
Card Interchange Fees
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	1,161	1,099	3,139	3,114
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	598	939	1,975	2,743
Loan Related Derivative Income
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	0	0	0	0
Income From Bank-owned Life Insurance
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	0	0	0	0
Net Realized Gain (Loss) on Securities
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	0	0	0	0
Other Income
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	491	323	1,026	917
Total Noninterest Income
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	11,204	11,514	32,388	34,728
Total Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	$ 11,204	$ 11,514	$ 32,388	$ 34,728

[1] As reported in the Consolidated Statements of Income.

[2] Revenue from contracts with customers in scope of ASC 606.