CONDENSED CONSOLIDATED STATEMENTS OF CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands |
Jun. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Available-for-sale securities, at amortized cost | $ 1,388,108 | $ 1,390,255 |
| Held-to-maturity securities, at fair value | 152,901 | 146,686 |
| Other borrowings, at fair value | $ 700,026 | $ 536,285 |
| Common Stock, par value (in dollars per share) | $ 0.10 | $ 0.10 |
| Common Stock, authorized | 25,000,000 | 25,000,000 |
| Common Stock, issued | 15,071,279 | 15,071,279 |
| Treasury stock, shares | 114,110 | 116,126 |