Revenue from Contracts with Customers (Disaggregation of Revenue by Source) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 53,219	$ 42,797	$ 151,720	$ 124,908
Brokerage and insurance product commissions
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,230	4,563	15,418	13,991
Trust
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,369	4,179	15,765	13,718
Asset management
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	20,932	16,215	60,347	45,825
Wealth management
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	31,531	24,957	91,530	73,534
Mortgage broker fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	270	85	460	312
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	14,149	11,497	39,434	33,182
Administrative services
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,359	1,077	3,843	3,122
Card related fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,513	2,021	6,474	5,506
Other deposit related fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3,397	$ 3,160	$ 9,979	$ 9,252