Stock-Based Compensation - Schedule of Non-Qualified Stock Options, Activity (Details) - Non-Qualified Stock Options (NQO) - $ / shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Shares | |||
| Outstanding at beginning of year (in shares) | 77 | 251 | 325 |
| Granted (in shares) | 0 | 0 | 0 |
| Exercised (in shares) | (3) | (161) | (73) |
| Forfeited, canceled or expired (in shares) | 0 | (13) | (1) |
| Outstanding at end of year (in shares) | 74 | 77 | 251 |
| Options exercisable (in shares) | 74 | 59 | 184 |
| Weighted Average Exercise Price Per Share | |||
| Outstanding at beginning of year (in dollars per share) | $ 23.30 | $ 23.00 | $ 22.74 |
| Granted (in dollars per share) | 0 | 0 | 0 |
| Exercised (in dollars per share) | 21.43 | 22.74 | 21.87 |
| Forfeited, canceled or expired (in dollars per share) | 0 | 24.47 | 20.62 |
| Outstanding at end of year (in dollars per share) | 23.37 | 23.30 | 23.00 |
| Options exercisable (in dollars per share) | $ 23.37 | $ 23.35 | $ 23.35 |