Securities (Details 5) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Trading Securities [Abstract] | ||
| Trading securities, at estimated fair value | $ 0 | $ 7,368 |
| Obligations of U.S. Government Sponsored Entities [Member] | ||
| Trading Securities [Abstract] | ||
| Trading securities, at estimated fair value | 0 | 6,601 |
| Residential Mortgage-Backed Securities U.S. Government Sponsored Entities [Member] | ||
| Trading Securities [Abstract] | ||
| Trading securities, at estimated fair value | $ 0 | $ 767 |