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Investment Securities (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Schedule of Investments [Line Items]    
Amortized Cost: Due in one year or less $ 229  
Amortized Cost: Due after one year through five years 16,772  
Amortized Cost: Due after five years through ten years 22,050  
Amortized Cost: Due after ten years 29,390  
Amortized Cost, Single Maturity Date, Total 68,441  
Fair Value: Due in one year or less 231  
Fair Value: Due after one year through five years 16,475  
Fair Value: Due after five years through ten years 21,265  
Fair Value: Due after ten years 26,214  
Fair Value: Single Maturity Date, Total 64,185  
Available for sale debt maturities fair value sub total 137,641  
Available For Sale Debt Maturities Amortized Cost Total 144,123  
Available-for-sale Securities, Amortized Cost Basis 144,123 $ 153,552
Available-for-sale Securities 137,641 146,470
Amortized Cost: Due after one through five years, Held to maturity 8,345  
Amortized Cost: Due after five years through ten years, Held to maturity 7,672  
Amortized Cost: Due after ten years, Held to maturity 11,920  
Amortized Cost: Total, Held to maturity 27,937  
Fair Value: Due after one through five years, Held to maturity 8,401  
Fair Value: Due after five years through ten years, Held to maturity 7,736  
Fair Value: Due after ten years, Held to maturity 12,980  
Fair Value: Total, Held to maturity 29,117  
Held-to-maturity Securities 94,010 93,632
Held-to-maturity Securities, Fair Value 93,760 95,346
Residential mortgage-backed agencies [Member]    
Schedule of Investments [Line Items]    
Held-to-maturity Securities 46,491 47,771
Held-to-maturity Securities, Fair Value 45,210 47,442
Commercial mortgage-backed agencies [Member]    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 39,013  
Fair Value: without Single Maturity Date 37,752  
Available-for-sale Securities, Amortized Cost Basis 39,013 41,771
Available-for-sale Securities 37,752 40,891
Held-to-maturity Securities 15,821 17,288
Held-to-maturity Securities, Fair Value 15,828 17,518
Collateralized mortgage obligations [Member]    
Schedule of Investments [Line Items]    
Amortized Cost: without Single Maturity Date 36,669  
Fair Value: without Single Maturity Date 35,704  
Available-for-sale Securities, Amortized Cost Basis 36,669 41,298
Available-for-sale Securities 35,704 40,384
Held-to-maturity Securities 3,761 4,187
Held-to-maturity Securities, Fair Value $ 3,605 $ 4,118