Earnings Per Share - Anti-dilutive Options (Details) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jul. 01, 2016 |
Jun. 30, 2017 |
Jul. 01, 2016 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Anti-dilutive stock options (in shares) | 13 | 12 | 23 | 23 |
| Anti-dilutive stock options | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Anti-dilutive stock options (in shares) | 13 | 10 | 22 | 21 |
| Anti-dilutive restricted stock units | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Anti-dilutive stock options (in shares) | 0 | 2 | 1 | 2 |