Description of Business and Summary of Significant Accounting Policies (AntiDilutive) (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share | ||||
| Total (in shares) | 1,111 | 2,555 | 1,319 | 2,659 |
| 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 | 2,553 | 1,310 | 2,624 |
| Restricted stock units | ||||
| Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share | ||||
| Total (in shares) | 15 | 2 | 9 | 35 |