Investment securities available for sale (Details Textual) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Dec. 31, 2015 |
|
| Schedule of Available-for-sale Securities [Line Items] | |||
| Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value | $ 5,156,000 | $ 5,968,000 | |
| Proceeds from Sale of Available-for-sale Securities, Debt | 11,000,000 | $ 7,000,000 | |
| Available-for-sale Securities, Gross Realized Gain (Loss) | $ 109,000 | $ 7,000 | |