Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net interest income	[1]	$ 30,945	$ 33,858	$ 63,547	$ 68,442
Asset-based wealth management revenues	[1]	8,156	9,141	16,511	18,062
Transaction-based wealth management revenues	[1]	449	408	783	739
Wealth management revenues	[1]	8,605	9,549	17,294	18,801
Mortgage banking revenues	[1]	14,851	3,640	20,947	6,286
Card interchange fees	[1]	1,031	1,018	1,978	2,015
Service charges on deposit accounts	[1]	517	929	1,377	1,804
Loan related derivative income	[1]	99	746	2,554	1,470
Income from bank-owned life insurance	[1]	791	566	1,355	1,215
Net realized losses on securities	[1]	0	(80)	0	(80)
Other income	[1]	426	385	742	609
Total noninterest income	[1]	26,320	16,753	46,247	32,120
Total revenues	[1]	57,265	50,611	109,794	100,562
Revenue from contracts in scope of Topic 606		10,441	11,867	21,184	23,215
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]	8,156	9,141	16,511	18,062
Transaction-based Wealth Management Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	449	408	783	739
Total Wealth Management Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	8,605	9,549	17,294	18,801
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]	1,031	1,018	1,978	2,015
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	517	929	1,377	1,804
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]	288	371	535	595
Total Noninterest Income
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	10,441	11,867	21,184	23,215
Total Revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts in scope of Topic 606	[2]	$ 10,441	$ 11,867	$ 21,184	$ 23,215

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

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