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Investment (Amortized Cost and Fair Values Classified by Contractual Maturity Date) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Schedule of Investments [Line Items]    
Amortized Cost: Due after one year through five years $ 4,449  
Amortized Cost: Due after five years through ten years 34,838  
Amortized Cost: Due after ten years 27,871  
Available for sale debt maturities amortized cost sub Total 67,158  
Fair Value: Due after one year through five years 4,528  
Fair Value: Due after five years through ten years 35,530  
Fair Value: Due after ten years 22,102  
Available for sale debt maturities fair value sub total 62,160  
Available-for-sale Securities, Amortized Cost Basis 134,336 $ 135,008
Available-for-sale Securities 130,792 131,305
Amortized Cost: Due after one through five years, Held to maturity 16,202  
Amortized Cost: Due after ten years, Held to maturity 16,215  
Amortized Cost: Total, Held to maturity 32,417  
Fair Value: Due after one through five years, Held to maturity 16,857  
Fair Value: Due after ten years, Held to maturity 20,257  
Fair Value: Total, Held to maturity 37,114  
Held-to-maturity Securities 91,399 93,979
Held-to-maturity securities, fair value 98,311 100,656
Residential mortgage-backed agencies [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 9,945 4,917
Available-for-sale Securities 10,147 4,900
Held-to-maturity Securities 40,666 42,939
Held-to-maturity securities, fair value 41,911 43,253
Commercial mortgage-backed agencies [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 29,210 27,634
Available-for-sale Securities 29,670 27,764
Held-to-maturity Securities 15,443 15,521
Held-to-maturity securities, fair value 16,242 15,865
Collateralized mortgage obligations [Member]    
Schedule of Investments [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 28,023 29,903
Available-for-sale Securities 28,815 29,923
Held-to-maturity Securities 2,873 3,140
Held-to-maturity securities, fair value $ 3,044 $ 3,143