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Securities (Fair Value and Gross Unrealized Losses for Securities Available for Sale) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]    
Fair Value, Less than 12 months $ 22,226 $ 20,411
Fair Value, 12 months or more 69,540 30,433
Fair Value, Total 91,766 50,844
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]    
Gross Unrealized Losses, Less than 12 months 390 144
Gross Unrealized Losses, 12 months or more 2,198 646
Gross Unrealized Losses, Total 2,588 790
Obligations of U.S. government corporations and agencies [Member]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]    
Fair Value, Less than 12 months 1,973 4,455
Fair Value, 12 months or more 13,710 7,810
Fair Value, Total 15,683 12,265
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]    
Gross Unrealized Losses, Less than 12 months 6 58
Gross Unrealized Losses, 12 months or more 475 200
Gross Unrealized Losses, Total 481 258
Mortgage-backed securities [Member]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]    
Fair Value, Less than 12 months 16,659 11,885
Fair Value, 12 months or more 42,966 17,931
Fair Value, Total 59,625 29,816
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]    
Gross Unrealized Losses, Less than 12 months 332 59
Gross Unrealized Losses, 12 months or more 1,306 287
Gross Unrealized Losses, Total 1,638 346
Obligations of states and political subdivisions [Member]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]    
Fair Value, Less than 12 months 3,594 4,071
Fair Value, 12 months or more 12,864 4,692
Fair Value, Total 16,458 8,763
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]    
Gross Unrealized Losses, Less than 12 months 52 27
Gross Unrealized Losses, 12 months or more 417 159
Gross Unrealized Losses, Total $ 469 $ 186