Fair Value (Financial instruments Measured at Fair Value) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Securities available for sale:
Total available for sale securities	$ 198,924	$ 199,329	$ 199,156
Impaired loans and foreclosed real estate:
Foreclosed real estate	9,356	9,532	$ 10,103
Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Total available for sale securities	198,924	199,329
Recurring [Member] | Quoted Prices in Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Government-sponsored enterprise securities
Mortgage-backed securities
Corporate bonds
Equity securities
Total available for sale securities
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Government-sponsored enterprise securities	8,992	17,490
Mortgage-backed securities	155,535	148,065
Corporate bonds	34,397	33,600
Equity securities		174
Total available for sale securities	198,924	199,329
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Government-sponsored enterprise securities
Mortgage-backed securities
Corporate bonds
Equity securities
Total available for sale securities
Recurring [Member] | Fair Value [Member]
Securities available for sale:
Government-sponsored enterprise securities	8,992	17,490
Mortgage-backed securities	155,535	148,065
Corporate bonds	34,397	33,600
Equity securities		174
Total available for sale securities	198,924	199,329
Nonrecurring [Member] | Quoted Prices in Markets for Identical Assets (Level 1) [Member]
Impaired loans and foreclosed real estate:
Impaired loans
Foreclosed real estate
Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Impaired loans and foreclosed real estate:
Impaired loans
Foreclosed real estate
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Impaired loans and foreclosed real estate:
Impaired loans	14,932	12,284
Foreclosed real estate	9,356	9,532
Nonrecurring [Member] | Fair Value [Member]
Impaired loans and foreclosed real estate:
Impaired loans	14,932	12,284
Foreclosed real estate	$ 9,356	$ 9,532