Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands |
3 Months Ended |
6 Months Ended |
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
| Numerator: |
|
|
|
|
| Net income (loss) |
$ 7,678
|
$ (245)
|
$ 12,405
|
$ (3,117)
|
| Denominator: |
|
|
|
|
| Denominator for basic earnings (loss) per common share - weighted-average shares (in shares) |
27,603,096
|
28,016,122
|
27,466,689
|
28,085,710
|
| Effect of dilutive securities: |
|
|
|
|
| Employee stock awards (in shares) |
268,850
|
0
|
332,249
|
0
|
| Denominator for dilutive earnings (loss) per common share (in shares) |
27,871,946
|
28,016,122
|
27,798,938
|
28,085,710
|
| Basic earnings (loss) per common share (in usd per share) |
$ 0.28
|
$ (0.01)
|
$ 0.45
|
$ (0.11)
|
| Diluted earnings (loss) per common share (in usd per share) |
$ 0.28
|
$ (0.01)
|
$ 0.45
|
$ (0.11)
|
| Employee stock option |
|
|
|
|
| Anti-dilutive securities excluded from the calculation of earnings (loss) per share: |
|
|
|
|
| Shares excluded from the calculation of diluted earnings (loss) per share (in shares) |
0
|
|
0
|
|
| Unvested restricted stock |
|
|
|
|
| Anti-dilutive securities excluded from the calculation of earnings (loss) per share: |
|
|
|
|
| Shares excluded from the calculation of diluted earnings (loss) per share (in shares) |
0
|
|
0
|
|
| Performance shares |
|
|
|
|
| Anti-dilutive securities excluded from the calculation of earnings (loss) per share: |
|
|
|
|
| Shares excluded from the calculation of diluted earnings (loss) per share (in shares) |
2,538
|
|
2,538
|
|
| Stock-based awards |
|
|
|
|
| Anti-dilutive securities excluded from the calculation of earnings (loss) per share: |
|
|
|
|
| Shares excluded from the calculation of diluted earnings (loss) per share (in shares) |
|
239,440
|
|
331,618
|