Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Debt issuance costs | $ 6,286 | $ 4,105 |
| Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |
| Common stock, shares authorized (in shares) | 300,000,000 | 300,000,000 |
| Common stock, shares, outstanding (in shares) | 38,553,413 | 43,837,714 |
| Treasury stock, shares outstanding (in shares) | 9,246,002 | 3,178,372 |