Consolidated Statement of Financial Condition (Parenthetical) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2017 |
Dec. 31, 2016 |
|
| Held-to-maturity securities, fair value | $ 98,183 | $ 97,981 |
| Preferred stock, no par value | $ 0 | $ 0 |
| Preferred Stock, Shares Authorized | 2,000,000 | 2,000,000 |
| Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |
| Common Stock, Shares Authorized | 25,000,000 | 25,000,000 |
| Common Stock, Shares, Issued | 7,067,000 | 6,269,000 |
| Common Stock, Shares, Outstanding | 7,067,000 | 6,269,000 |
| Series A Preferred Stock [Member] | ||
| Preferred Stock, Shares Authorized | 30,000 | 30,000 |
| Preferred Stock, Liquidation Preference Per Share | $ 1,000 | $ 1,000 |
| Preferred Stock, Shares Issued | 10,000 | 20,000 |
| Preferred Stock, Shares Outstanding | 10,000 | 20,000 |
| Preferred Stock, Dividend Rate, Percentage | 9.00% | 9.00% |