Fair Value Disclosures (Fair Value Qualitative Information) (Details) $ in Thousands	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Fair Value Qualitative Information [Line Items]
Impaired loans	$ 12,226	$ 8,313
Other real estate owned	$ 93
Measurement Input, Comparability Adjustment | Minimum [Member]
Fair Value Qualitative Information [Line Items]
Loans and leases, measurement input	0.017	0.005
Measurement Input, Comparability Adjustment | Maximum [Member]
Fair Value Qualitative Information [Line Items]
Loans and leases, measurement input	1.00	1.00
Measurement Input, Comparability Adjustment | Weighted Average [Member]
Fair Value Qualitative Information [Line Items]
Other real estate owned, measurement input	0.470
Loans and leases, measurement input	0.282	0.282