Description of Business and Summary of Significant Accounting Policies (Anti-dilutive) (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share | ||||
| Total (in shares) | 192 | 1,111 | 179 | 1,319 |
| Options | Common Stock | ||||
| Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share | ||||
| Total (in shares) | 1,096 | 1,310 | ||
| Restricted stock units | ||||
| Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share | ||||
| Total (in shares) | 192 | 15 | 179 | 9 |