Premises and Equipment and Held for Sale Premises and Equipment (Narrative) (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Premises and Equipment and Held for Sale Premises and Equipment [Abstract] | ||||
| Impairment of assets to be disposed of | $ 426,000 | |||
| Operating leases, rent expense | $ 701,000 | $ 647,000 | $ 569,000 | |