Deposits - Interest Expense on Deposit Liabilities (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Deposits [Abstract] | |||
| Interest-bearing demand | $ 30 | $ 18 | $ 23 |
| Statement savings | 47 | 40 | 30 |
| Money market | 870 | 603 | 311 |
| Certificates of deposit, retail | 3,934 | 3,574 | 4,388 |
| Certificates of deposit, brokered | 1,220 | 1,243 | 311 |
| Interest expense, deposits | $ 6,101 | $ 5,478 | $ 5,063 |