Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	$ 1,428,000	$ 1,342,000
Other operating income (out-of-scope of Topic 606)	6,105,000	6,120,000
Total Other Operating Income	7,533,000	7,462,000
Bankcard fees
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	650,000	625,000
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	413,000	354,000
Other
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	365,000	363,000
Gains On Sale Of Other Real Estate Owned
Disaggregation of Revenue [Line Items]
Other operating income (in-scope of Topic 606)	$ 316,000	$ 0