Earnings (Loss) Per Share - Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
Stock options | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Antidilutive securities excluded from computation of earnings per share (in shares) | 9,714 | 13,149 | 9,779 | 12,724 |
Restricted stock | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Antidilutive securities excluded from computation of earnings per share (in shares) | 131 | 173 | 169 | 529 |