Consolidated Balance Sheets (Parenthetical) - $ / shares |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Preferred stock, par value | $ 0.01 | $ 0.01 |
| Preferred stock, shares authorized | 15,000,000 | 15,000,000 |
| Preferred stock, shares issued | 0 | 0 |
| Preferred stock, shares outstanding | 0 | 0 |
| Common stock, par value | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 65,000,000 | 65,000,000 |
| Common stock, shares issued | 29,996,000 | 29,539,000 |
| Common stock, shares outstanding | 29,996,000 | 29,539,000 |
| Treasury stock, shares | 494,000 | 350,000 |