CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares |
Jun. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value (in usd per share) | $ 1.00 | $ 1.00 |
| Common stock, shares authorized (in shares) | 25,413,000 | 25,413,000 |
| Common stock, shares issued (in shares) | 25,413,000 | 25,413,000 |
| Common stock, shares outstanding (in shares) | 18,350,000 | 19,021,000 |
| Treasury stock, shares (in shares) | 7,063,000 | 6,392,000 |