CONDENSED CONSOLIDATED STATEMENTS OF CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Available-for-sale securities, at amortized cost | $ 1,352,845 | $ 1,390,255 |
| Held-to-maturity securities, at fair value | 151,626 | 146,686 |
| Other borrowings, at fair value | $ 0 | $ 10,576 |
| Common Stock, par value (in dollars per share) | $ 0.10 | $ 0.10 |
| Common Stock, authorized | 25,000,000 | 25,000,000 |
| Common Stock, issued | 15,091,864 | 15,015,594 |
| Treasury stock, shares | 116,203 | 116,126 |