CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares |
9 Months Ended | |
|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Common dividends declared, per share | $ 0.44 | $ 0.40 |
| Preferred dividends declared, per share | $ 15 | |
| Preferred stock converted to common stock, shares | 882,096 | |
| Redemption of preferred stock, shares | 2,367 | |
| Common stock options exercised, shares | 11,730 | 3,000 |
| Restricted stock awards shares | 15,587 | 22,561 |
| Issuance of treasury stock to 401(k) plan, shares | 16,290 | 18,275 |
| Purchase of treasury shares | 1,152,776 | 1,018,726 |
| Treasury stock shares acquired cost per share | $ 20.00 | $ 17.13 |