Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Investment securities available for sale, amortized cost | $ 568,890 | $ 347,776 |
| Investment securities held to maturity, fair value | $ 2,818 | $ 0 |
| Common stock, par value (in dollars per share) | $ 1 | $ 1 |
| Common stock, shares authorized (in shares) | 100,000,000 | 100,000,000 |
| Common stock, shares issued (in shares) | 21,110,968 | 20,931,416 |
| Common stock, shares outstanding (in shares) | 16,939,715 | 17,071,523 |
| Treasury stock, shares (in shares) | 4,171,253 | 3,859,893 |