Capital Stock, Weighted Average Shares Outstanding (Details) - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Weighted Average Shares Outstanding [Abstract] | |||
| Basic weighted-average common shares outstanding (in shares) | 55,518 | 55,170 | 52,806 |
| Effect of Dilutive Securities [Abstract] | |||
| Stock awards and options (in shares) | 409 | 1,061 | 1,110 |
| Convertible note (in shares) | 0 | 245 | 936 |
| Diluted weighted-average common shares outstanding (in shares) | 55,927 | 56,476 | 54,852 |
| Stock Options [Member] | |||
| Weighted Average Shares Outstanding [Abstract] | |||
| Anti-dilutive shares excluded from calculation of diluted earnings per share (in shares) | 1,400 | 900 | 400 |