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
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	$ 16,190	$ 14,556	$ 47,495	$ 42,345
Non-interest income within the scope of other GAAP topics	508	1,197	2,952	3,511
Noninterest Income	16,698	15,753	50,447	45,856
Fees and Commissions, Depositor Accounts
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	8,183	7,598	23,281	21,783
Fees and Commissions, Debit Cards
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	5,440	4,677	15,931	13,543
Fees and Commissions, Fiduciary and Trust Accounts
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	1,802	1,579	5,144	4,792
Other Non-Interest Income
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	$ 765	$ 702	$ 3,139	$ 2,227