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Investment Securities (Details 2) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Contractual maturities of securities    
Available for Sale, Cost Basis, Within 1 year $ 3,000  
Available for Sale, Cost Basis, After 1 year but within 5 years 8,881  
Available for Sale, Cost Basis, After 5 years but within 10 years 44,213  
Available for Sale, Cost Basis, After 10 years but within 15 years 32,673  
Available for Sale, Cost Basis, Over 15 years 40,469  
Available for Sale, Cost Basis, Total 129,236  
Available for Sale, Fair Value, Within 1 year 2,993  
Available for Sale, Fair Value, After 1 year but within 5 years 8,843  
Available for Sale, Fair Value, After 5 years but within 10 years 44,313  
Available for Sale, Fair Value, After 10 years but within 15 years 32,399  
Available for Sale, Fair Value, Over 15 years 40,496  
Available for Sale, Fair Value, Total 129,044 $ 127,077
Held to Maturity, Cost Basis, Within 1 year 0  
Held to Maturity, Cost Basis, After 1 year but within 5 years 3,400  
Held to Maturity, Cost Basis, After 5 years but within 10 years 12,105  
Held to Maturity, Cost Basis, After 10 years but within 15 years 13,578  
Held to Maturity, Cost Basis, Over 15 years 7,654  
Held to Maturity, Cost Basis, Total 36,737 30,665
Held to Maturity, Fair Value, Within 1 year 0  
Held to Maturity, Fair Value, After 1 year but within 5 years 3,349  
Held to Maturity, Fair Value, After 5 years but within 10 years 12,069  
Held to Maturity, Fair Value, After 10 years but within 15 years 13,431  
Held to Maturity, Fair Value, Over 15 years 7,745  
Held to Maturity, Fair Value, Total $ 36,594 $ 30,420