Fair Value Measurements, Quantitative Information About Unobservable Inputs Used In Recurring And Nonrecurring Level 3 Inputs (Details) - Nonrecurring [Member] $ in Thousands	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 1,327	$ 1,283
Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	1,327	1,283
Impaired Loans, Fair Value Calculated Using Estimated Sales Price [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	129	45
Other Real Estate Owned [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	244	244
Impaired Loans, Fair Value Calculated Using Disounted Cash Flows [Member] | Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 954	$ 994
Measurement Input, Discount Rate [Member] | Impaired loans [Member] | High [Member] | Level 3 [Member] | Discounted Cash Flows [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Discount rate	0.0825	0.0825
Measurement Input, Discount Rate [Member] | Impaired loans [Member] | Low [Member] | Level 3 [Member] | Discounted Cash Flows [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Discount rate	0.0450	0.0450
Measurement Input, Discount Rate [Member] | Impaired loans [Member] | Weighted Average [Member] | Level 3 [Member] | Discounted Cash Flows [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Discount rate	0.0687	0.0686