Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	$ 14,746	$ 13,465
Non-interest income within the scope of other GAAP topics	1,179	1,027
Noninterest Income	15,925	14,492
Fees and Commissions, Depositor Accounts
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	7,321	6,862
Fees and Commissions, Debit Cards
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	4,969	4,334
Fees and Commissions, Fiduciary and Trust Accounts
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	1,642	1,568
Other Non-Interest Income
Disaggregation of Revenue [Line Items]
Non-interest income from contracts with customers	$ 814	$ 701