Revenue (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]
Other operating income (out-of-scope of Topic 606)	$ 8,858	$ 7,137	$ 22,924	$ 20,052
Total Other Operating Income	10,509	8,673	27,611	24,449
Other operating income (in-scope of Topic 606)
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	1,651	1,536	4,687	4,397
Bankcard fees
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	820	724	2,214	2,056
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	398	407	1,224	1,137
Other
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	433	405	1,249	1,204
Gains On Sale Of Other Real Estate Owned
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	$ 63	$ 83	$ 380	$ 133