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Investment Securities (Detail Textuals)
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Security
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Security
Sep. 30, 2015
USD ($)
Dec. 31, 2015
Security
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]          
Number of securities in unrealized loss position 11   11   16
Number of securities in unrealized loss position in for greater than twelve months 3   3   3
Number of securities in unrealized loss position in for less than twelve months 8   8   13
Gain on sales of securities | $ $ 36,000 $ 106,000 $ 36,000 $ 106,000  
Proceeds from sale of securities | $ 2,606,000 3,430,000 2,606,000 3,430,000  
Available-for-sale securities          
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]          
Gain on sales of securities | $ 24,000 64,000 24,000 64,000  
Held-to-maturity securities          
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]          
Gain on sales of securities | $ $ 12,000 $ 42,000 $ 12,000 $ 42,000  
Percentage of principal outstanding held to maturity securities     85.00%    
Mortgage-backed securities - residential          
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]          
Number of securities in unrealized loss position in for greater than twelve months 2   2    
Number of securities in unrealized loss position in for less than twelve months 5   5