Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Common stock, cash dividends, per share, declared | $ 0.48 | $ 0.44 | $ 0.42 |
| Retained earnings | |||
| Common stock, cash dividends, per share, declared | $ 0.48 | $ 0.44 | $ 0.42 |