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Securities (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value $ 66,167 $ 51,483
Less than 12 Months, Unrealized Losses (614) (698)
12 Months or Longer, Fair Value 669 703
12 Months or Longer, Unrealized Losses (25) (29)
Total, Fair Value 66,836 52,186
Total, Unrealized Losses (639) (727)
U.S. Treasury and Government Agencies [Member]    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 14,252 6,044
Less than 12 Months, Unrealized Losses (74) (52)
12 Months or Longer, Fair Value
12 Months or Longer, Unrealized Losses
Total, Fair Value 14,252 6,044
Total, Unrealized Losses (74) (52)
Mortgage-backed securities [Member]    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 50,810 44,344
Less than 12 Months, Unrealized Losses (514) (607)
12 Months or Longer, Fair Value 669 703
12 Months or Longer, Unrealized Losses (25) (29)
Total, Fair Value 51,479 45,047
Total, Unrealized Losses (539) (636)
State and political subdivisions [Member]    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 1,105 1,095
Less than 12 Months, Unrealized Losses (26) (39)
12 Months or Longer, Fair Value
12 Months or Longer, Unrealized Losses
Total, Fair Value 1,105 1,095
Total, Unrealized Losses $ (26) $ (39)