Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	$ 3,412	$ 3,351	$ 9,777	$ 9,765
Service charges on deposit accounts | Over a period of time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	473	312	1,381	1,244
Service charges on deposit accounts | At a point in time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	2,939	3,039	8,396	8,520
Debit and credit card
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	3,475	3,141	9,951	9,487
Debit and credit card | Over a period of time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	180	158	542	496
Debit and credit card | At a point in time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	3,295	2,983	9,409	8,991
Wealth management
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	2,101	2,483	6,210	7,782
Wealth management | Over a period of time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	1,703	1,815	4,991	5,517
Wealth management | At a point in time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	398	669	1,219	2,265
Other fee revenue | At a point in time
Disaggregation of Revenue [Line Items]
Revenues from contract with customers	$ 864	$ 1,000	$ 2,928	$ 2,862