Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended |
|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2017 |
|
| Earnings Per Share [Abstract] | ||
| Net income attributable to common shareholders | $ 14,447 | $ 45,032 |
| Add: Income from conversion of Class C Common Stock | 1,193 | 3,196 |
| Adjusted net income attributable to common shareholders | $ 15,640 | $ 48,228 |
| Basic net income per share (USD per share) | $ 0.06 | $ 0.20 |
| Diluted net income per share (USD per share) | $ 0.06 | $ 0.19 |
| Basic weighted average share outstanding (in shares) | 223,622 | 227,557 |
| Add: Dilutive effects of stock options and RSUs (in shares) | 2,598 | 4,481 |
| Add: Dilutive effects of conversion (in shares) | 19,156 | 19,156 |
| Diluted weighted average shares outstanding (in shares) | 245,376 | 251,194 |
| Anti-diluted shares excluded from computation of earnings per share | 1,500 | 1,000 |