Investment securities available for sale (Details Textual) - USD ($) |
3 Months Ended | ||
---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
|
Debt Securities, Available-for-sale [Line Items] | |||
Proceeds from Sale of Debt Securities, Available-for-sale | $ 6,500,000 | ||
Available-for-sale Securities, Gross Realized Gain (Loss) | 101,000 | $ 0 | |
Investment Pledged As Security For Debt [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank | $ 8,065,000 | $ 8,004,000 |