XML 74 R60.htm IDEA: XBRL DOCUMENT v3.20.1
Investment securities - Summary of Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Amortized Cost of Held-to-maturity Securities    
Amortized Cost, After ten years, Held to maturity $ 6,852  
Amortized Cost, Held to maturity 6,852  
Amortized Cost, Mortgage-backed securities, Held to maturity 804  
Held-to-maturity, Amortized Cost 7,656 $ 8,361
Fair Value of Held-to-maturity Securities    
Fair Value, After ten years, Held to maturity 7,060  
Fair Value, Held to maturity 7,060  
Fair Value, Mortgage-backed securities, Held to maturity 829  
Held to maturity, Fair Value $ 7,889 $ 8,380