CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Statement of Stockholders' Equity [Abstract] | ||
| Dividends declared (in dollars per share) | $ 1.88 | $ 1.88 |
| Purchase of treasury stock (in shares) | 60,018 | 17,238 |