Leases (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) branch_office
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	19 years 9 months 18 days
Weighted average discount rate	3.30%
Total operating lease expense | $	$ 1,900
Lease right-of-use assets | $	20,600
Lease liabilities | $	$ 20,743
Minimum
Lessee, Lease, Description [Line Items]
Option extension period	5 years
Maximum
Lessee, Lease, Description [Line Items]
Option extension period	10 years
Land and Building
Lessee, Lease, Description [Line Items]
Number of branch locations | branch_office	8
Land
Lessee, Lease, Description [Line Items]
Number of branch locations | branch_office	9
Loan Production Office And Office Space
Lessee, Lease, Description [Line Items]
Number of branch locations | branch_office	1