XML 79 R68.htm IDEA: XBRL DOCUMENT v3.20.2
Available-for-sale securities (Details 2) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Available-for-sale securities [Abstract]      
Cost $ 10,979 $ 11,032 $ 10,835
Gross Unrealized Gains 216 88 86
Gross Unrealized Losses 4 10 17
Fair Value 11,191 11,110 10,904
Mortgage-backed securities      
Available-for-sale securities [Abstract]      
Cost 9,813 9,804 9,577
Gross Unrealized Gains 213 87 86
Gross Unrealized Losses 4 10 16
Fair Value 10,022 9,881 9,647
U.S. Treasury securities      
Available-for-sale securities [Abstract]      
Cost 1,166 1,228 1,258
Gross Unrealized Gains 3 1 0
Gross Unrealized Losses 0 0 1
Fair Value $ 1,169 $ 1,229 $ 1,257